Calpine acquires Cogeneration Corp.: Calpine Corp. acquired 80 percent of the common stock of Cogeneration Corporation of America (CGCA) for $146 million, increasing Calpine`s gas-fired power production by 20 percent to 2,476 MW of capacity. NRG Energy Inc., a subsidiary of Northern States Power, will retain the remaining 20 percent interest in CGCA.





