Energy Portfolio/Mix

CORE Electric Cooperative is committed to providing electricity that is both reliable and affordable.

We purchase wholesale power from Xcel Energy and the Western Area Power Administration and receive additional power from Comanche Unit 3, a supercritical, pulverized coal plant located in Pueblo and operated by Xcel Energy.

In the last several years, we have made significant investments in utility-scale renewables that make dependable energy available at or below our avoided cost, which is what CORE would otherwise pay for the same amount of energy from other sources. We also have interconnected to our grid more than 3,700 rooftop solar systems that offer more than 21 megawatts of potential generation.

CORE currently is reviewing new power supply options to begin in 2026, after our current power purchase agreement (PPA) with Xcel Energy expires. We expect any new PPA to provide our cooperative flexibility in maximizing renewables without sacrificing reliability or affordability.

2020 Energy by Source




Natural Gas



* Renewables accounted for an atypical share of our 2020 energy sources due to a prolonged outage of Comanche 3 power plant.


A late spring snowstorm the weekend of May 20-22 has brought conditions that affect overhead lines throughout CORE’s 5,000-square-mile service. Our crews are working as quickly as possible to restore service affected members and will not stop until all are back on. Please use the online Outage Center to report and monitor outages.