upgrades Archives

State challenges pollution control upgrades

Power Outage Map

The Arizona Corporation Commission is criticizing recent actions by the U.S. Environmental Protection Agency to clean up the state’s power plants. The commission voted Tuesday to file an amicus brief in federal appeals court supporting the state’s challenge to pollution control upgrades at three coal-fired power plants. The EPA partially approved Arizona’s air quality plan… Read More →

EPA rule puts Arizona plants on track to upgrade

by in Business News | Economy

The U.S. Environmental Protection Agency had outlined a final plan for upgrades at three Arizona coal-fired power plants. The agency on Friday followed through with a proposal to partially reject Arizona’s air quality plan. It came up with one of its own to control nitrogen oxide emissions that impair visibility at 18 national parks and… Read More →