As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 2/12/18  State Street Corp.                SC 13G/A               1:10K  Black Hills Power Inc.                                     
          Black Hills Power, Inc.³

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¹	Filing/Form Type:  -K
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
³	Group Member:  A Registrant or non-Registrant party to this Filing made by a Group.