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DENVER (AP) - Colorado's Public Utilities Commission will be hearing from the public on Xcel Energy's plans for ensuring solar and other renewable sources remain part of the state's power mix.

A key issue at Monday's public comment session is expected to be an Xcel proposal for what it calls more transparency on who gains and loses financially when rooftop solar is fed into the grid.

With utilities across the country challenging what is known as net metering as too costly, proponents of solar energy see Xcel's proposal as a possible first step toward reducing what rooftop solar producers are paid.

Minneapolis-based Xcel operates in eight states.

Coloradans make up nearly half its 3.4 million electricity customers.