Rocky Mountain News: Colorado is facing an energy challenge: can we meet increasing energy demand while reducing global warming pollution? Colorado’s Climate Action Plan calls for cutting global warming pollution by 20 percent by 2020. According to a report by the Colorado Energy Forum, the state will need 4,900 megawatts of new generation by 2025. While renewable energy in Colorado is playing a growing role, conventional coal still supplies almost 80 percent of the state’s electricity, the source of …