Support the Chronicle. Luminant is also a major purchaser of wind power. But there are 14 active strip mines in Texas, all producing lignite, a low-grade coal that emits nearly twice the greenhouse gases, smog, and mercury pollution of higher density coals. The highest stack stretches feet -- a couple of hundred feet taller than the Capitol.
Smith, Star-Telegram, March 17, Only three of TXU's new coal plants were built, but Perry stood by the utility through the month battle.