NORTHERN STATES POWER CO /MN/

Other Events

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Other Events

Other Events

Other Events

Other Events

Submission of Matters to a Vote of Security Holders

Other Events

Other Events

Other Events

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Other Events

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

Free Writing Prospectus

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Other Events

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Other Events

General form for quarterly reports under Section 13 or 15(d)

Certification of approval for listing and registration on a national securities exchange

Registration of Securities on Exchange

Prospectus Supplement for Delayed or Continuous Offering

No description available

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Annual report pursuant to Section 13 or 15(d)

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

Automatic Shelf Registration

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Free Writing Prospectus

No description available

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d) (amendment)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Casey Lynn

Welsh Timothy A

Pardee Charles G

KAMPLING PATRICIA L

Burkhart Megan D

Carter Peter W

Carter Peter W

Carter Peter W

KAMPLING PATRICIA L

Pardee Charles G

Welsh Timothy A

Burkhart Megan D

Casey Lynn

PROKOPANKO JAMES T

Johnson Netha N.

Stockfish Devin W

Hutchinson Maria Demaree

Kehl George J

Burkhart Megan D

Pardee Charles G