SIERRA PACIFIC RESOURCES /NV/

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

8.01

Certification of termination of registration of a class of securities (Section 12(b))

Notification of removal from listing and/or registration on a national securities exchange

2.01,3.01,3.03,5.01,5.03,9.01

8.01,9.01

Post-effective amendment to an automatic shelf registration statement

Post Effective Amendment to S-8

No description available

Post Effective Amendment to S-8

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

1.01

2.02,7.01,9.01

8.01

5.07,8.01,9.01

1.01

8.01

5.02,9.01

Automatic Shelf Registration

8.01,9.01

No description available

8.01,9.01

Additional Information for Proxy Statement/ Votes

2.03

8.01,9.01

Letter from the SEC

Correspondence with the SEC

No description available

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

Letter from the SEC

2.02,7.01,9.01

8.01

Additional Information for Proxy Statement/ Votes

No description available

8.01,9.01

Registration statement under Securities Act of 1933

Regulation FD Disclosure

Other Events

Additional Information for Proxy Statement/ Votes

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

1.01,8.01,9.01

Additional Information for Proxy Statement/ Votes

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)

Post Effective Amendment to S-8

General form for quarterly reports under Section 13 or 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)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

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)

Post Effective Amendment to S-8

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

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

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

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

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

Correspondence with the SEC

Letter from the SEC

Automatic Shelf Registration

Automatic Shelf Registration

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

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

Post Effective Amendment to S-8

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d) (amendment)

Annual report pursuant to Section 13 or 15(d)

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

Post Effective Amendment to S-8

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

No description available

Preliminary Proxy Statement

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Definitive Proxy Statement

Correspondence with the SEC

Letter from the SEC

Post-effective amendment to an automatic shelf registration statement

CHRISTENSON GLENN C

COBB ALICE A

DENIS ROBERTO R

FRANK STEPHEN E

Geraghty Kevin

Halkyard Jonathan S

KALETA PAUL J

KENNEDY BRIAN J

MULLARKEY MAUREEN T

OREILLY JOHN F

SATRE PHILIP G

SNYDER DONALD D

STEWART ROBERT E JR

YACKIRA MICHAEL W

ANDERSON JOSEPH B JR

ANDERSON JOSEPH B JR

BETHEL E KEVIN

CLARK SUSAN F