Electrical generating plants in Alabama had a total installed capacity (utility and nonutility) of 22.7 million kW in 1999, and total production was 120.9 billion kWh in the same year. About half of the capacity and production came from private sources (the Alabama Power Company and Alabama Electric Cooperative), with most of the remainder attributable to the Tennessee Valley Authority, which also owned three of the state's five nuclear reactors, three at Brown's Ferry and two at the Joseph M. Farley plant.
Significant petroleum finds in southern Alabama date from the early 1950s. The 2002 output was 24,000 barrels per day; proved reserves as of 31 December 2001 totaled 42 million barrels. During 2002, marketed gas production was 356 billion cu ft (10.1 billion cu m) of natural gas; proved reserves in 2001 totaled 3,915 billion cu ft (110.8 billion cu m). Coal production, which began in the 19th century, was 19,324,000 tons in 2000, down from 23,013,000 tons in 1998, of which all was bituminous and about 75% was surface mined. Coal reserves in 2001 totaled 352 million tons. In 2000 Alabama's total per capita energy consumption was 443 million Btu (111.6 million kcal), ranking it ninth among the states.