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Press Releases


Local Arizona Businesses Call on AZ Corporation Commission to Ensure State is on a Path to a Cleaner, Greener Future

Arizona -- Thirty local Arizona businesses from cities across the state are raising their voices in support of bold, progressive action from the Arizona Corporation Commission (ACC) in the Energy…

Mayor of Golden and CEOs of Local Clean Energy Companies Join Congressman Crow in Support of the Federal Coronavirus Relief Package

Denver, CO -- This morning, the Sierra Club hosted a webinar with Congressman Jason Crow, Mayor Laura Weinberg of Golden, and CEOs of three local clean energy companies. The telepresser was an…

Colorado Springs Utilities Sets Early Closure Date for Coal Plants

Colorado Springs, CO -- Today, in a 7-2 vote, the Colorado Springs Utilities (CSU) Board voted to accelerate the closure timeline for its two coal plants. Martin Drake -- one of the nation’s last…

65 Northern Colorado Businesses and Institutions Petition PRPA to Transition Away from Coal to Renewables

Fort Collins, CO -- Yesterday, Sierra Club delivered a community letter to Platte River Power Authority (PRPA) to retire Rawhide coal plant by 2030 in its long-term energy planning. Every four years…

Lawsuit Targets Arch Coal’s Illegal Air Pollution at Colorado Coal Mine

DENVER— Conservation groups sued Arch Coal today over illegal pollution at the company’s West Elk coal mine in western Colorado. The mine is the single-largest industrial source of methane pollution…

Advocates deliver 5,180 petitions in favor of 50% renewable energy by 2030

PHOENIX, AZ -- Arizona State Representative Kirsten Engel joined advocates from Vote Solar, Sierra Club, Solar United Neighbors, and Arizona Interfaith Power & Light at the Arizona State Capitol…

Appeals Court: Trump Administration Wrongly Opened 5,000 Acres of Colorado Forest to Coal Mining

Denver, CO— A federal appeals court today ruled that the U.S. Forest Service broke the law by failing to consider an alternative that would protect the Gunnison National Forest’s Pilot Knob area…

EPA Seeks To Approve Pollution-Causing Regional Haze Plan

Price, UT --  Today, the Environmental Protection Agency (EPA) hosted a public comment session on the state of Utah’s do-nothing regional haze plan. In April 2019, Utah submitted a regional haze…

Almost 200 Colorado Springs residents call on CSU to retire the expensive Martin Drake Coal Plant and invest in a low-cost clean energy future

Colorado Springs, CO -- Today, almost 200 residents provided feedback on Colorado Spring Utilities’ (CSU) long-term energy plan, including calls for early coal plant retirements and prioritization of…

About 50 People Contest Tucson Electric Power’s Rate Increase At Public Comment Session

TUCSON, AZ--  At the second Arizona Corporation Commission (ACC) public comment session on Tucson Electric Power’s (TEP) rate increase request, about 50 people submitted comments against the hike.…