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Mark Jaffe

‘It’s our new cash crop’: A land rush for renewable energy is transforming the Eastern Plains

A race to meet Colorado climate goals has led to a flurry of wind and solar activity

United Power makes good on threat to break its contract with Tri-State Generation

With 103,000 customers, United Power accounts for 20% of Tri-State’s business

Tri-State to cut greenhouse gases in Colorado by turning to renewable power

Electricity provider targets 80% cut in emissions by 2030

Another push for oil and gas measures on the Colorado ballot

Proposals falls on both sides of arguments for regulation

Another push for oil and gas measures on the Colorado ballot

Proposals falls on both sides of arguments for regulation

Sun powers low-income residents’ homes

Nonprofit launches a new solar-energy program in Colorado