Reader opinions on bighorn project, graphene power source, Obama in Alaska.
Environmentalists want TEP to divest its stake in the San Juan power plant in New Mexico.
Environmentalists continue to push for a coal-free plant in Tucson.
People have mined coal in Arizona for at least 700 years, but today the only active mine in the state is the Kayenta Mine at the Black Mesa field on the Colorado Plateau in Northeastern Arizona.
Tucson Electric Power says it's diversifying its energy portfolio by getting less power from a coal-fired plant in eastern Arizona while moving to expand its purchases of power generated by natural gas.
FLAGSTAFF - The U.S. Environmental Protection Agency has prescribed new pollution limits on three coal-fired Arizona power plants, aiming to protect the environment and air quality for wilderness areas and landmarks such as the Grand Canyon.
Environmental groups want federal regulators to place a partly coal-fired power plant in Tucson under regional regulations designed to curb regional haze.
The Sierra Club has joined an effort to get Tucson Electric Power Co. to quit burning coal at a Tucson-area power plant.
A local environmental group pressed its demand that Tucson Electric Power Co. stop burning coal at a local power plant today, with a lunchtime demonstration and leafleting at the downtown headquarters of TEP parent UNS Energy Corp.
FLAGSTAFF - The U.S. Environmental Protection Agency has issued its final rule aimed at cleaning up the largest single source of haze-causing pollutants in the country.
FLAGSTAFF — The U.S. Environmental Protection Agency has issued its final rule aimed at cleaning up the largest single source of haze-causing pollutants in the country.
With natural gas prices at their lowest levels in years, Tucson Electric Power Co. hasn’t been burning coal at its south-side power plant lately.