i Total Assets as of 9/30/05 from SEC filings.
ii Natural gas reserves are worldwide reserves as of 12/31/04 from company 10-K's, pro forma for significant mergers. North American and US reserves provided when available. If only a North American and/or US total is provided then the company only operates in North America and/or the US.
iii Oil reserves are worldwide totals as of 12/31/04 from company 10-K's, pro forma for significant mergers.
iv Total megawatts (MW) of generation capacity represents net ownership of capacity as of 12/31/2004 from company 10-K's, unless otherwise noted.
v California Supply Basins include Western Canada, Rocky Mountains, San Juan, Permian and California in-state production.
vi North American producer rankings assume closing of ConocoPhillips/Burlington merger. U.S. operator rankings are for 2004 from U.S. Energy Information Agency, U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves 2004 Annual Report. Rankings were adjusted for ConocoPhillips merger with Burlington and Chevron acquisition of Unocal.
vii Information about gas processing ownership from "Gas Processing Survey." Oil & Gas Journal. June 27, 2005.
viii 2004 market share from FERC, 2004 State of the Markets Report, June 2005, staff report by the Office of Market Oversight and Investigations, p. 200.
ix Based on October 1, 2005 Index of Customers for each pipeline.
x 2004 market share from FERC, 2004 State of the Markets Report, June 2005, staff report by the Office of Market Oversight and Investigations, p. 200.
xi Ranking of North American gas marketers by wholesale physical volumes sold, third quarter 2005 from Gas Daily, December 12, 2005, p. 7.
xii Companies identified as retail gas suppliers based on non-core gas supplier lists on PG&E, SoCalGas and SDG&E's websites as of 12/30/2005. Natural gas utilities also included.
xiii Burlington Resources website, www.br-inc.com, cited December 13, 2005.
xiv Merger with FPL Group announced Dec 19, 2005.
xv Merger with Cinergy announced May 9, 2005.
xvi 80.5% owned by Berkshire Hathaway Inc. and 19.5% owned by three individuals; Berkshire Hathaway has 9.9% voting interest; Walter Scott has voting control.
