Regulatory Filings
Selected regulatory reports for MidAmerican Energy Holdings Company, PacifiCorp, MidAmerican Energy Company, Northern Natural Gas Company and Kern River Gas Transmission Company are available below. Visit Northern Powergrid's website to access the regulatory reports of Northern Powergrid and its regulated subsidiary companies.






Regulatory Filings
Company Regulatory Report Report Type Date
MidAmerican Energy Holdings Co. Annual Form 61 Dec. 31, 2012
PacifiCorp Annual Form 1 Dec. 31, 2012
MidAmerican Energy Co. Annual Form 1 Dec. 31, 2012
Northern Natural Gas Co. Annual Form 2 Dec. 31, 2012
Kern River Gas Transmission Co. Annual Form 2 Dec. 31, 2012
PacifiCorp Quarterly Form 3Q Sept. 30, 2012
MidAmerican Energy Co. Quarterly Form 3Q Sept. 30, 2012
Northern Natural Gas Co. Quarterly Form 3Q Sept. 30, 2012
Kern River Gas Transmission Co. Quarterly Form 3Q Sept. 30, 2012
PacifiCorp Quarterly Form 3Q June 30, 2012
MidAmerican Energy Co. Quarterly Form 3Q June 30, 2012
Northern Natural Gas Co. Quarterly Form 3Q June 30, 2012
Kern River Gas Transmission Co. Quarterly Form 3Q June 30, 2012
PacifiCorp Quarterly Form 3Q March 31, 2012
MidAmerican Energy Co. Quarterly Form 3Q March 31, 2012
Northern Natural Gas Co. Quarterly Form 3Q March 31, 2012
Kern River Gas Transmission Co. Quarterly Form 3Q March 31, 2012
MidAmerican Energy Holdings Co. Annual Form 61 Dec. 31, 2011
PacifiCorp Annual Form 1 Dec. 31, 2011
MidAmerican Energy Co. Annual Form 1 Dec. 31, 2011
Northern Natural Gas Co. Annual Form 2 Dec. 31, 2011
Kern River Gas Transmission Co. Annual Form 2 Dec. 31, 2011
PacifiCorp Quarterly Form 3Q Sept. 30, 2011
MidAmerican Energy Co. Quarterly Form 3Q Sept. 30, 2011
Northern Natural Gas Co. Quarterly Form 3Q Sept. 30, 2011
Kern River Gas Transmission Co. Quarterly Form 3Q Sept. 30, 2011
PacifiCorp Quarterly Form 3Q June 30, 2011
MidAmerican Energy Co. Quarterly Form 3Q June 30, 2011
Northern Natural Gas Co. Quarterly Form 3Q June 30, 2011
Kern River Gas Transmission Co. Quarterly Form 3Q June 30, 2011
PacifiCorp Quarterly Form 3Q March 31, 2011
MidAmerican Energy Co. Quarterly Form 3Q March 31, 2011
Northern Natural Gas Co. Quarterly Form 3Q March 31, 2011
Kern River Gas Transmission Co. Quarterly Form 3Q March 31, 2011
MidAmerican Energy Holdings Co. Annual Form 61 Dec. 31, 2010
PacifiCorp Annual Form 1 Dec. 31, 2010
MidAmerican Energy Co. Annual Form 1 Dec. 31, 2010
Northern Natural Gas Co. Annual Form 2 Dec. 31, 2010
Kern River Gas Transmission Co. Annual Form 2 Dec. 31, 2010
PacifiCorp Quarterly Form 3Q Sept. 30, 2010
MidAmerican Energy Co. Quarterly Form 3Q Sept. 30, 2010
Northern Natural Gas Co. Quarterly Form 3Q Sept. 30, 2010
Kern River Gas Transmission Co. Quarterly Form 3Q Sept. 30, 2010
PacifiCorp Quarterly Form 3Q June 30, 2010
MidAmerican Energy Co. Quarterly Form 3Q June 30, 2010
Northern Natural Gas Co. Quarterly Form 3Q June 30, 2010
Kern River Gas Transmission Co. Quarterly Form 3Q June 30, 2010
PacifiCorp Quarterly Form 3Q March 31, 2010
MidAmerican Energy Co. Quarterly Form 3Q March 31, 2010
Northern Natural Gas Co. Quarterly Form 3Q March 31, 2010
Kern River Gas Transmission Co. Quarterly Form 3Q March 31, 2010