SEATTLE -- The latest data reported to the U.S. Environmental Protection Agency shows power plants and refineries continued to rank among the biggest emitters of greenhouse gas emissions in Washington in 2012.
In 2012, 90 large sources in the state reported releasing a total of 19.2 million metric tons of carbon dioxide, methane and other greenhouse gases. That's about an 8 percent drop from the year before.
The TransAlta coal-fired power plant in Centralia continued to be the single largest source of greenhouse gas emissions, releasing nearly 4.2 million metric tons of greenhouse gases, or about one-fifth of total emissions reported to the EPA. The facility, however, saw a 26 percent drop in emissions between 2011 and 2012.
Greenhouse gas emission released through power generation and other human activities contribute to climate change, and state officials say mandatory reporting of those emissions is a crucial first step in reducing pollution.