SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Energy Focus, Inc./DE – ‘10-Q’ for 6/30/23 – ‘EX-101.SCH’

On:  Thursday, 8/10/23, at 9:02am ET   ·   For:  6/30/23   ·   Accession #:  924168-23-84   ·   File #:  1-36583

Previous ‘10-Q’:  ‘10-Q’ on 5/11/23 for 3/31/23   ·   Next & Latest:  ‘10-Q’ on 11/9/23 for 9/30/23   ·   11 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 8/10/23  Energy Focus, Inc./DE             10-Q        6/30/23   79:6.7M

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.14M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     25K 
 3: EX-32.1     Certification -- §906 - SOA'02                      HTML     23K 
 9: R1          Cover Page                                          HTML     76K 
10: R2          Condensed Consolidated Balance Sheets               HTML    132K 
11: R3          Condensed Consolidated Balance Sheets               HTML     47K 
                (Parentheticals)                                                 
12: R4          Condensed Consolidated Statements of Operations     HTML     97K 
13: R5          Condensed Consolidated Statements of Operations     HTML     24K 
                (Parentheticals)                                                 
14: R6          Condensed Consolidated Statements of Changes in     HTML    145K 
                Stockholders' Equity                                             
15: R7          Condensed Consolidated Statements of Cash Flows     HTML    121K 
16: R8          Condensed Consolidated Statements of Changes in     HTML     24K 
                Stockholders' Equity (Parentheticals)                            
17: R9          Nature of Operations                                HTML     29K 
18: R10         Basis of Presentation and Summary of Significant    HTML    110K 
                Accounting Policies                                              
19: R11         Inventories                                         HTML     44K 
20: R12         Other Current Assets                                HTML     26K 
21: R13         Property and Equipment                              HTML     35K 
22: R14         Leases                                              HTML    118K 
23: R15         Debt                                                HTML     64K 
24: R16         Income Taxes                                        HTML     29K 
25: R17         Stockholders' Equity                                HTML     94K 
26: R18         Commitments and Contingencies                       HTML     26K 
27: R19         Basis of Presentation and Summary of Significant    HTML     82K 
                Accounting Policies (Policies)                                   
28: R20         Basis of Presentation and Summary of Significant    HTML     76K 
                Accounting Policies (Tables)                                     
29: R21         Inventories (Tables)                                HTML     45K 
30: R22         Property and Equipment (Tables)                     HTML     34K 
31: R23         Leases (Tables)                                     HTML     74K 
32: R24         Debt (Tables)                                       HTML     51K 
33: R25         Stockholders' Equity (Tables)                       HTML     81K 
34: R26         Nature of Operations - Narrative (Details)          HTML     39K 
35: R27         Basis of Presentation and Summary of Significant    HTML     54K 
                Accounting Policies - Basis of presentation                      
                (Details)                                                        
36: R28         Basis of Presentation and Summary of Significant    HTML     36K 
                Accounting Policies - Disaggregation of Revenue                  
                (Details)                                                        
37: R29         Basis of Presentation and Summary of Significant    HTML     43K 
                Accounting Policies - Accounts Receivable and                    
                Geographic information (Details)                                 
38: R30         Basis of Presentation and Summary of Significant    HTML     33K 
                Accounting Policies - Net Accounts Receivable                    
                (Details)                                                        
39: R31         Basis of Presentation and Summary of Significant    HTML     46K 
                Accounting Policies - Reconciliation of Basic and                
                Diluted Loss per Share (Details)                                 
40: R32         Basis of Presentation and Summary of Significant    HTML     32K 
                Accounting Policies - Net Loss per Share (Details)               
41: R33         Basis of Presentation and Summary of Significant    HTML     31K 
                Accounting Policies - Product Warranties (Details)               
42: R34         Basis of Presentation and Summary of Significant    HTML     33K 
                Accounting Policies - Warranty Activity (Details)                
43: R35         Basis of Presentation and Summary of Significant    HTML     64K 
                Accounting Policies - Certain Risks and                          
                Concentrations (Details)                                         
44: R36         Inventories - Inventories, Net (Details)            HTML     31K 
45: R37         Inventories - Reserve Rollforward (Details)         HTML     30K 
46: R38         Other Current Assets (Details)                      HTML     26K 
47: R39         Property and Equipment - Schedule of Property and   HTML     47K 
                Equipment (Details)                                              
48: R40         Property and Equipment - Narrative (Details)        HTML     25K 
49: R41         Leases - Narrative (Details)                        HTML     30K 
50: R42         Leases - Components of Lease Cost (Details)         HTML     29K 
51: R43         Leases - Schedule of Supplemental Balance Sheet     HTML     34K 
                Information (Details)                                            
52: R44         Leases - Schedule of Future Maturities of Lease     HTML     38K 
                Liabilities (Details)                                            
53: R45         Leases - Schedule of Supplemental Cash Flow         HTML     27K 
                Information (Details)                                            
54: R46         Debt - Credit Facilities (Details)                  HTML     70K 
55: R47         Debt - Promissory Note Narrative (Details)          HTML     35K 
56: R48         Debt - Promissory Notes (Details)                   HTML     66K 
57: R49         Debt - Streeterville Notes (Details)                HTML     86K 
58: R50         Income Taxes - (Details)                            HTML     35K 
59: R51         Stockholders' Equity - June 2023 private placement  HTML     38K 
                (Details)                                                        
60: R52         Stockholders' Equity - 1-for-7 Reverse Stock Split  HTML     38K 
                (Details)                                                        
61: R53         Stockholders' Equity - March 2023 Private           HTML     39K 
                Placements (Details)                                             
62: R54         Stockholders' Equity - February 2023 Private        HTML     38K 
                Placement (Details)                                              
63: R55         Stockholders' Equity - January 2023 Sander          HTML     42K 
                Electronics Private Placement (Details)                          
64: R56         Stockholders' Equity - January 2023 Transactions    HTML     39K 
                with Mei Yun (Gina) Huang (Details)                              
65: R57         Stockholders' Equity - June 2022 Private Placement  HTML     61K 
                (Details)                                                        
66: R58         Stockholders' Equity - December 2021 Private        HTML     55K 
                Placement (Details)                                              
67: R59         Stockholders' Equity - Preferred Stock (Details)    HTML     77K 
68: R60         Stockholders' Equity - January 2020 Equity          HTML     56K 
                Offering (Details)                                               
69: R61         Stockholders' Equity - Outstanding Warrants from    HTML     45K 
                the January 2020 Equity Offering (Details)                       
70: R62         Stockholders' Equity - Stock-Based Compensation     HTML     38K 
                (Details)                                                        
71: R63         Stockholders' Equity - Estimates Utilized           HTML     45K 
                (Details)                                                        
72: R64         Stockholders' Equity - Stock Options and a Summary  HTML     67K 
                of Activity (Details)                                            
73: R65         Stockholders' Equity - Restricted Stock Units       HTML     46K 
                (Details)                                                        
74: R66         Commitments and Contingencies (Details)             HTML     28K 
77: XML         IDEA XML File -- Filing Summary                      XML    145K 
75: XML         XBRL Instance -- efoi-20230630_htm                   XML   1.47M 
76: EXCEL       IDEA Workbook of Financial Report Info              XLSX    154K 
 5: EX-101.CAL  XBRL Calculations -- efoi-20230630_cal               XML    141K 
 6: EX-101.DEF  XBRL Definitions -- efoi-20230630_def                XML    694K 
 7: EX-101.LAB  XBRL Labels -- efoi-20230630_lab                     XML   1.46M 
 8: EX-101.PRE  XBRL Presentations -- efoi-20230630_pre              XML    970K 
 4: EX-101.SCH  XBRL Schema -- efoi-20230630                         XSD    170K 
78: JSON        XBRL Instance as JSON Data -- MetaLinks              420±   634K 
79: ZIP         XBRL Zipped Folder -- 0000924168-23-000084-xbrl      Zip    306K

‘EX-101.SCH’   —   XBRL Schema — efoi-20230630

This Exhibit is an XBRL File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with the Workiva Platform -->
<!-- Copyright 2023 Workiva -->
<!-- r:6f352945-4b7e-49e2-9b22-e5b14b43fcd9,g:d6686d26-d6ef-4386-81d4-0f0fb5a663e5 -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:efoi="http://www.energyfocusinc.com/20230630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.energyfocusinc.com/20230630">
<xs:import namespace="http://fasb.org/srt/2023" schemaLocation="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd"/>
<xs:import namespace="http://fasb.org/us-gaap/2023" schemaLocation="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd"/>
<xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
<xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
<xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/dei/2023" schemaLocation="https://xbrl.sec.gov/dei/2023/dei-2023.xsd"/>
<xs:annotation>
<xs:appinfo>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="efoi-20230630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="efoi-20230630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="efoi-20230630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="efoi-20230630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
<link:roleType id="CoverPage" roleURI="http://www.energyfocusinc.com/role/CoverPage">
<link:definition> 0000001 - Document - Cover Page </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedBalanceSheets" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedBalanceSheets">
<link:definition> 0000002 - Statement - Condensed Consolidated Balance Sheets </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedBalanceSheetsParentheticals" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedBalanceSheetsParentheticals">
<link:definition> 0000003 - Statement - Condensed Consolidated Balance Sheets (Parentheticals) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedStatementsofOperations" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedStatementsofOperations">
<link:definition> 0000004 - Statement - Condensed Consolidated Statements of Operations </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedStatementsofOperationsParentheticals" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedStatementsofOperationsParentheticals">
<link:definition> 0000005 - Statement - Condensed Consolidated Statements of Operations (Parentheticals) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedStatementsofChangesinStockholdersEquity" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedStatementsofChangesinStockholdersEquity">
<link:definition> 0000006 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedStatementsofCashFlows" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedStatementsofCashFlows">
<link:definition> 0000007 - Statement - Condensed Consolidated Statements of Cash Flows </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CondensedConsolidatedStatementsofChangesinStockholdersEquityParentheticals" roleURI="http://www.energyfocusinc.com/role/CondensedConsolidatedStatementsofChangesinStockholdersEquityParentheticals">
<link:definition> 0000008 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NatureofOperations" roleURI="http://www.energyfocusinc.com/role/NatureofOperations">
<link:definition> 0000009 - Disclosure - Nature of Operations </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPolicies" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies">
<link:definition> 0000010 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Inventories" roleURI="http://www.energyfocusinc.com/role/Inventories">
<link:definition> 0000011 - Disclosure - Inventories </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherCurrentAssets" roleURI="http://www.energyfocusinc.com/role/OtherCurrentAssets">
<link:definition> 0000012 - Disclosure - Other Current Assets </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyandEquipment" roleURI="http://www.energyfocusinc.com/role/PropertyandEquipment">
<link:definition> 0000013 - Disclosure - Property and Equipment </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Leases" roleURI="http://www.energyfocusinc.com/role/Leases">
<link:definition> 0000014 - Disclosure - Leases </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Debt" roleURI="http://www.energyfocusinc.com/role/Debt">
<link:definition> 0000015 - Disclosure - Debt </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxes" roleURI="http://www.energyfocusinc.com/role/IncomeTaxes">
<link:definition> 0000016 - Disclosure - Income Taxes </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquity" roleURI="http://www.energyfocusinc.com/role/StockholdersEquity">
<link:definition> 0000017 - Disclosure - Stockholders' Equity </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingencies" roleURI="http://www.energyfocusinc.com/role/CommitmentsandContingencies">
<link:definition> 0000018 - Disclosure - Commitments and Contingencies </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies">
<link:definition> 9954701 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesTables" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables">
<link:definition> 9954702 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InventoriesTables" roleURI="http://www.energyfocusinc.com/role/InventoriesTables">
<link:definition> 9954703 - Disclosure - Inventories (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyandEquipmentTables" roleURI="http://www.energyfocusinc.com/role/PropertyandEquipmentTables">
<link:definition> 9954704 - Disclosure - Property and Equipment (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesTables" roleURI="http://www.energyfocusinc.com/role/LeasesTables">
<link:definition> 9954705 - Disclosure - Leases (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtTables" roleURI="http://www.energyfocusinc.com/role/DebtTables">
<link:definition> 9954706 - Disclosure - Debt (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityTables" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityTables">
<link:definition> 9954707 - Disclosure - Stockholders' Equity (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NatureofOperationsNarrativeDetails" roleURI="http://www.energyfocusinc.com/role/NatureofOperationsNarrativeDetails">
<link:definition> 9954708 - Disclosure - Nature of Operations - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesBasisofpresentationDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesBasisofpresentationDetails">
<link:definition> 9954709 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Basis of presentation (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesDisaggregationofRevenueDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDisaggregationofRevenueDetails">
<link:definition> 9954710 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesAccountsReceivableandGeographicinformationDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesAccountsReceivableandGeographicinformationDetails">
<link:definition> 9954711 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Accounts Receivable and Geographic information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesNetAccountsReceivableDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNetAccountsReceivableDetails">
<link:definition> 9954712 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Net Accounts Receivable (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesReconciliationofBasicandDilutedLossperShareDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesReconciliationofBasicandDilutedLossperShareDetails">
<link:definition> 9954713 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Loss per Share (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesNetLossperShareDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNetLossperShareDetails">
<link:definition> 9954714 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Net Loss per Share (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesProductWarrantiesDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesProductWarrantiesDetails">
<link:definition> 9954715 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Product Warranties (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesWarrantyActivityDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesWarrantyActivityDetails">
<link:definition> 9954716 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Warranty Activity (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesCertainRisksandConcentrationsDetails" roleURI="http://www.energyfocusinc.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesCertainRisksandConcentrationsDetails">
<link:definition> 9954717 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Certain Risks and Concentrations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InventoriesInventoriesNetDetails" roleURI="http://www.energyfocusinc.com/role/InventoriesInventoriesNetDetails">
<link:definition> 9954718 - Disclosure - Inventories - Inventories, Net (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InventoriesReserveRollforwardDetails" roleURI="http://www.energyfocusinc.com/role/InventoriesReserveRollforwardDetails">
<link:definition> 9954719 - Disclosure - Inventories - Reserve Rollforward (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherCurrentAssetsDetails" roleURI="http://www.energyfocusinc.com/role/OtherCurrentAssetsDetails">
<link:definition> 9954720 - Disclosure - Other Current Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyandEquipmentScheduleofPropertyandEquipmentDetails" roleURI="http://www.energyfocusinc.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails">
<link:definition> 9954721 - Disclosure - Property and Equipment - Schedule of Property and Equipment (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyandEquipmentNarrativeDetails" roleURI="http://www.energyfocusinc.com/role/PropertyandEquipmentNarrativeDetails">
<link:definition> 9954722 - Disclosure - Property and Equipment - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesNarrativeDetails" roleURI="http://www.energyfocusinc.com/role/LeasesNarrativeDetails">
<link:definition> 9954723 - Disclosure - Leases - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesComponentsofLeaseCostDetails" roleURI="http://www.energyfocusinc.com/role/LeasesComponentsofLeaseCostDetails">
<link:definition> 9954724 - Disclosure - Leases - Components of Lease Cost (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesScheduleofSupplementalBalanceSheetInformationDetails" roleURI="http://www.energyfocusinc.com/role/LeasesScheduleofSupplementalBalanceSheetInformationDetails">
<link:definition> 9954725 - Disclosure - Leases - Schedule of Supplemental Balance Sheet Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesScheduleofFutureMaturitiesofLeaseLiabilitiesDetails" roleURI="http://www.energyfocusinc.com/role/LeasesScheduleofFutureMaturitiesofLeaseLiabilitiesDetails">
<link:definition> 9954726 - Disclosure - Leases - Schedule of Future Maturities of Lease Liabilities (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeasesScheduleofSupplementalCashFlowInformationDetails" roleURI="http://www.energyfocusinc.com/role/LeasesScheduleofSupplementalCashFlowInformationDetails">
<link:definition> 9954727 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtCreditFacilitiesDetails" roleURI="http://www.energyfocusinc.com/role/DebtCreditFacilitiesDetails">
<link:definition> 9954728 - Disclosure - Debt - Credit Facilities (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtPromissoryNoteNarrativeDetails" roleURI="http://www.energyfocusinc.com/role/DebtPromissoryNoteNarrativeDetails">
<link:definition> 9954729 - Disclosure - Debt - Promissory Note Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtPromissoryNotesDetails" roleURI="http://www.energyfocusinc.com/role/DebtPromissoryNotesDetails">
<link:definition> 9954730 - Disclosure - Debt - Promissory Notes (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtStreetervilleNotesDetails" roleURI="http://www.energyfocusinc.com/role/DebtStreetervilleNotesDetails">
<link:definition> 9954731 - Disclosure - Debt - Streeterville Notes (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesDetails" roleURI="http://www.energyfocusinc.com/role/IncomeTaxesDetails">
<link:definition> 9954732 - Disclosure - Income Taxes - (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityJune2023privateplacementDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityJune2023privateplacementDetails">
<link:definition> 9954733 - Disclosure - Stockholders' Equity - June 2023 private placement (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquity1for7ReverseStockSplitDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquity1for7ReverseStockSplitDetails">
<link:definition> 9954734 - Disclosure - Stockholders' Equity - 1-for-7 Reverse Stock Split (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityMarch2023PrivatePlacementsDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityMarch2023PrivatePlacementsDetails">
<link:definition> 9954735 - Disclosure - Stockholders' Equity - March 2023 Private Placements (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityFebruary2023PrivatePlacementDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityFebruary2023PrivatePlacementDetails">
<link:definition> 9954736 - Disclosure - Stockholders' Equity - February 2023 Private Placement (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityJanuary2023SanderElectronicsPrivatePlacementDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityJanuary2023SanderElectronicsPrivatePlacementDetails">
<link:definition> 9954737 - Disclosure - Stockholders' Equity - January 2023 Sander Electronics Private Placement (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityJanuary2023TransactionswithMeiYunGinaHuangDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityJanuary2023TransactionswithMeiYunGinaHuangDetails">
<link:definition> 9954738 - Disclosure - Stockholders' Equity - January 2023 Transactions with Mei Yun (Gina) Huang (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityJune2022PrivatePlacementDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityJune2022PrivatePlacementDetails">
<link:definition> 9954739 - Disclosure - Stockholders' Equity - June 2022 Private Placement (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityDecember2021PrivatePlacementDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityDecember2021PrivatePlacementDetails">
<link:definition> 9954740 - Disclosure - Stockholders' Equity - December 2021 Private Placement (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityPreferredStockDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityPreferredStockDetails">
<link:definition> 9954741 - Disclosure - Stockholders' Equity - Preferred Stock (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityJanuary2020EquityOfferingDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityJanuary2020EquityOfferingDetails">
<link:definition> 9954742 - Disclosure - Stockholders' Equity - January 2020 Equity Offering (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityOutstandingWarrantsfromtheJanuary2020EquityOfferingDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityOutstandingWarrantsfromtheJanuary2020EquityOfferingDetails">
<link:definition> 9954743 - Disclosure - Stockholders' Equity - Outstanding Warrants from the January 2020 Equity Offering (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityStockBasedCompensationDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityStockBasedCompensationDetails">
<link:definition> 9954744 - Disclosure - Stockholders' Equity - Stock-Based Compensation (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityEstimatesUtilizedDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityEstimatesUtilizedDetails">
<link:definition> 9954745 - Disclosure - Stockholders' Equity - Estimates Utilized (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityStockOptionsandaSummaryofActivityDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityStockOptionsandaSummaryofActivityDetails">
<link:definition> 9954746 - Disclosure - Stockholders' Equity - Stock Options and a Summary of Activity (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityRestrictedStockUnitsDetails" roleURI="http://www.energyfocusinc.com/role/StockholdersEquityRestrictedStockUnitsDetails">
<link:definition> 9954747 - Disclosure - Stockholders' Equity - Restricted Stock Units (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingenciesDetails" roleURI="http://www.energyfocusinc.com/role/CommitmentsandContingenciesDetails">
<link:definition> 9954748 - Disclosure - Commitments and Contingencies (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
</xs:appinfo>
</xs:annotation>
<xs:element id="efoi_FinanceLeaseRightOfUseAssetAccumulatedDepreciation" abstract="false" name="FinanceLeaseRightOfUseAssetAccumulatedDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DistributorToTheU.S.NavyMember" abstract="true" name="DistributorToTheU.S.NavyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DateEnteredSevenMember" abstract="true" name="DateEnteredSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_SupplementalCashFlowInformationRelatedToLeasesTableTextBlock" abstract="false" name="SupplementalCashFlowInformationRelatedToLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="efoi_DebtInstrumentTrancheAmount" abstract="false" name="DebtInstrumentTrancheAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_ReceivableForClaimedEmployeeRetentionTaxCreditCurrent" abstract="false" name="ReceivableForClaimedEmployeeRetentionTaxCreditCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_ContractWithCustomerPaymentTerms" abstract="false" name="ContractWithCustomerPaymentTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="efoi_IncreaseDecreaseInProvisionForWarranties" abstract="false" name="IncreaseDecreaseInProvisionForWarranties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" abstract="true" name="OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="efoi_DeferredTaxAssetsOperatingLossCarryforwardsPortionAvailableAfterApplicationOfIRCSection382Limitations" abstract="false" name="DeferredTaxAssetsOperatingLossCarryforwardsPortionAvailableAfterApplicationOfIRCSection382Limitations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_March2023PartitionedNoteMember" abstract="true" name="March2023PartitionedNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_DateEnteredTwoMember" abstract="true" name="DateEnteredTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_StockIssuedDuringPeriodValueReverseStockSplits" abstract="false" name="StockIssuedDuringPeriodValueReverseStockSplits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DistributorToTheUSDepartmentOfDefenseMember" abstract="true" name="DistributorToTheUSDepartmentOfDefenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_InventoryFacilityMember" abstract="true" name="InventoryFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_December2021PrivatePlacementMember" abstract="true" name="December2021PrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DateEnteredOneMember" abstract="true" name="DateEnteredOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_DebtInstrumentPercentageIncreaseIfDelistedFromSecurityExchange" abstract="false" name="DebtInstrumentPercentageIncreaseIfDelistedFromSecurityExchange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_InventoryValuationReservesRawMaterials" abstract="false" name="InventoryValuationReservesRawMaterials" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_GHuangDirectorMember" abstract="true" name="GHuangDirectorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_CommonStockMinimumBidPrice" abstract="false" name="CommonStockMinimumBidPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
<xs:element id="efoi_LineOfCreditFacilityBorrowingCapacityValueOfAccountsReceivablePercent" abstract="false" name="LineOfCreditFacilityBorrowingCapacityValueOfAccountsReceivablePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_JHuangDirectorMember" abstract="true" name="JHuangDirectorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_ClassOfWarrantOrRightWarrantsIssuedPricePerShare" abstract="false" name="ClassOfWarrantOrRightWarrantsIssuedPricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
<xs:element id="efoi_FinanceLeaseRightOfUseAssetGross" abstract="false" name="FinanceLeaseRightOfUseAssetGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DebtInstrumentNumberOfCreditFacilities" abstract="false" name="DebtInstrumentNumberOfCreditFacilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="efoi_CommercialBuildingSystemsProviderMember" abstract="true" name="CommercialBuildingSystemsProviderMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_SecuredOvernightFinancingRateSOFRMember" abstract="true" name="SecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_PreFundedWarrantsMember" abstract="true" name="PreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DateEnteredFourMember" abstract="true" name="DateEnteredFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_MMMProductsMember" abstract="true" name="MMMProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_LineOfCreditFacilityBorrowingCapacityInventoryValuePercent" abstract="false" name="LineOfCreditFacilityBorrowingCapacityInventoryValuePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_LineOfCreditFacilityBorrowingCapacityInventoryCostsPercent" abstract="false" name="LineOfCreditFacilityBorrowingCapacityInventoryCostsPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_June2022PrivatePlacementMember" abstract="true" name="June2022PrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DateEnteredSixMember" abstract="true" name="DateEnteredSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_LeaseSupplementalBalanceSheetInformationTableTextBlock" abstract="false" name="LeaseSupplementalBalanceSheetInformationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="efoi_PaymentsForPlacementAgentCommissions" abstract="false" name="PaymentsForPlacementAgentCommissions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESActCurrent" abstract="false" name="PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESActCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DebtInstrumentSubjectToMandatoryRedemptionMaximumAmount" abstract="false" name="DebtInstrumentSubjectToMandatoryRedemptionMaximumAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_CommonStockClosingBidPriceThreshold" abstract="false" name="CommonStockClosingBidPriceThreshold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
<xs:element id="efoi_TLinDirectorsMember" abstract="true" name="TLinDirectorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_DistributorToTheUSDepartmentOfDefenseAccountedMember" abstract="true" name="DistributorToTheUSDepartmentOfDefenseAccountedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_LondonInterbankOfferedRateLIBOR1Member" abstract="true" name="LondonInterbankOfferedRateLIBOR1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DebtInstrumentEnteredPeriodAxis" abstract="true" name="DebtInstrumentEnteredPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="efoi_February2023PrivatePlacementMember" abstract="true" name="February2023PrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_January2020EquityOfferingPrivatePlacementMember" abstract="true" name="January2020EquityOfferingPrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_InventoryValuationReservesWriteOffs" abstract="false" name="InventoryValuationReservesWriteOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_NetProceedsFromTheConversionOfConvertibleDebtToPreferredStock" abstract="false" name="NetProceedsFromTheConversionOfConvertibleDebtToPreferredStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DebtInstrumentRightToDeferMandatoryRedemptionNumberOfDeferrals" abstract="false" name="DebtInstrumentRightToDeferMandatoryRedemptionNumberOfDeferrals" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="efoi_TwentyTwentyTwoPromissoryNoteMember" abstract="true" name="TwentyTwentyTwoPromissoryNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_MMMLEDProductsMember" abstract="true" name="MMMLEDProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_ReceivablesFacilityMember" abstract="true" name="ReceivablesFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_SecondAmendmentToInventoryFacilityMember" abstract="true" name="SecondAmendmentToInventoryFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_March2023PrivatePlacementMember" abstract="true" name="March2023PrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_InventoryReserveRollForward" abstract="true" name="InventoryReserveRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="efoi_EarningsPerShareBasicAndDilutedEPSAbstract" abstract="true" name="EarningsPerShareBasicAndDilutedEPSAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="efoi_OperatingLeaseCostNetOfSubleaseIncome" abstract="false" name="OperatingLeaseCostNetOfSubleaseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_PurchaseObligationPercentage" abstract="false" name="PurchaseObligationPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="efoi_LesseeOperatingLeaseInterestRateEffectiveRate" abstract="false" name="LesseeOperatingLeaseInterestRateEffectiveRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_PercentageOfSeriesAPreferredStockEligibleToVote" abstract="false" name="PercentageOfSeriesAPreferredStockEligibleToVote" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_A2022StreetervilleNoteMember" abstract="true" name="A2022StreetervilleNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_January2020InstitutionalInvestorMember" abstract="true" name="January2020InstitutionalInvestorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_NotePayablePercentageIncreaseDueToDeferralOfRedemptionOption" abstract="false" name="NotePayablePercentageIncreaseDueToDeferralOfRedemptionOption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="efoi_OffshoreSupplierMember" abstract="true" name="OffshoreSupplierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_InventoryValuationReservesSalesOfInventory" abstract="false" name="InventoryValuationReservesSalesOfInventory" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_ToolingMember" abstract="false" name="ToolingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_EstimatedProceedsFromIssuanceOfWarrants" abstract="false" name="EstimatedProceedsFromIssuanceOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_ProceedsFromTheIssuanceOfCommonStockAndWarrantsNetOfIssuanceCosts" abstract="false" name="ProceedsFromTheIssuanceOfCommonStockAndWarrantsNetOfIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_DateEnteredThreeMember" abstract="true" name="DateEnteredThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_StreetervilleNotePurchaseAgreementMember" abstract="true" name="StreetervilleNotePurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_DistributorToTheUSNavyCombinedWithSalesToShipbuildersMember" abstract="true" name="DistributorToTheUSNavyCombinedWithSalesToShipbuildersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_CommercialProductsMember" abstract="true" name="CommercialProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_January2023SanderElectronicsPrivatePlacementMember" abstract="true" name="January2023SanderElectronicsPrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_PaymentsForClearingFees" abstract="false" name="PaymentsForClearingFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_CommonStockTradePricePerShare" abstract="false" name="CommonStockTradePricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
<xs:element id="efoi_January2020EquityOfferingMember" abstract="true" name="January2020EquityOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_PaymentsRelatedToExpensesForRegisteredDirectOfferingAndConcurrentPrivatePlacement" abstract="false" name="PaymentsRelatedToExpensesForRegisteredDirectOfferingAndConcurrentPrivatePlacement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_June2023PrivatePlacementMember" abstract="true" name="June2023PrivatePlacementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_ShipbuilderForUSNavyMember" abstract="true" name="ShipbuilderForUSNavyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_January2020WarrantsMember" abstract="true" name="January2020WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_InventoryValuationReservesProvisionAccrual" abstract="false" name="InventoryValuationReservesProvisionAccrual" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_TotalExpendituresMember" abstract="true" name="TotalExpendituresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_RepaymentOfRemainingLongTermDebt" abstract="false" name="RepaymentOfRemainingLongTermDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_RegionalCommercialLightingRetrofitCompanyMember" abstract="true" name="RegionalCommercialLightingRetrofitCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_ClassOfWarrantOrRightWarrantsIssued" abstract="false" name="ClassOfWarrantOrRightWarrantsIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="efoi_January2023TransactionsWithMeiYunGinaHuangMember" abstract="true" name="January2023TransactionsWithMeiYunGinaHuangMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_A2021StreetervilleNoteMember" abstract="true" name="A2021StreetervilleNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_PaymentsForOfferingCostsAssociatedWithReverseStockSplit" abstract="false" name="PaymentsForOfferingCostsAssociatedWithReverseStockSplit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESAct" abstract="false" name="PayrollTaxCreditEmployeeRetentionCreditUnderTheCARESAct" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_NumberOfConsecutiveDaysForBidPriceBelowThreshold" abstract="false" name="NumberOfConsecutiveDaysForBidPriceBelowThreshold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="efoi_DebtInstrumentEnteredPeriodDomain" abstract="true" name="DebtInstrumentEnteredPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_ProceedsFromIssuanceOfCommonStockAndWarrants" abstract="false" name="ProceedsFromIssuanceOfCommonStockAndWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="efoi_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract" abstract="true" name="FinanceLeaseAssetsAndLiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="efoi_OffshoreSupplierOneMember" abstract="true" name="OffshoreSupplierOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="efoi_DateEnteredFiveMember" abstract="true" name="DateEnteredFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_DistributorToTheUSNavyAccountedMember" abstract="true" name="DistributorToTheUSNavyAccountedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="efoi_StandardProductWarrantyNumberofYears" abstract="false" name="StandardProductWarrantyNumberofYears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="efoi_OffshoreSupplierTwoMember" abstract="true" name="OffshoreSupplierTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>

11 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 7/05/23  Energy Focus, Inc./DE             8-K:1,3,5,7 6/28/23   12:408K
 6/22/23  Energy Focus, Inc./DE             8-K:3,5     6/15/23   11:192K
 6/11/20  Energy Focus, Inc./DE             8-K:3,5,7,9 6/11/20    3:92K
 5/18/20  Energy Focus, Inc./DE             8-K:5,9     5/12/20   13:448K
 3/24/20  Energy Focus, Inc./DE             10-K       12/31/19   92:8.5M
 5/30/19  Energy Focus, Inc./DE             8-K:1,3,4,5 5/21/19    3:116K
 4/01/19  Energy Focus, Inc./DE             8-K:1,2,3,5 3/29/19    8:1M
 7/27/15  Energy Focus, Inc./DE             8-K:5,9     7/22/15    2:320K                                   Workiva Inc Wde… FA01/FA
 7/16/14  Energy Focus, Inc./DE             8-K:5,9     7/15/14    7:594K                                   RDG Filings/FA
11/13/13  Energy Focus, Inc./DE             10-Q        9/30/13   76:7.6M                                   RDG Filings/FA
 5/10/07  Energy Focus, Inc./DE             10-Q        3/31/07    6:427K                                   Toppan Merrill/FA
↑Top
Filing Submission 0000924168-23-000084   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Thu., May 9, 9:01:07.2am ET