Boulder's proposed city-owned electric utility, which would replace Xcel Energy Inc.’s service to its residents and businesses, “would be cost effective over a 20-year period," the city said Monday.

Boulder has long contemplated kicking out Xcel (NYSE: XEL) and creating its own electric utility, which it has said would include more renewable energy in its portfolio than Xcel can provide.

City officials said Monday that their analysis indicates that the utility could have 80 percent renewable energy by 2030. The city also released its “Financial Forecast Tool” plus an updated analysis, both of which are available here.

The analysis didn’t look at electricity rates, which Boulder voters have said must meet or beat Xcel’s charges.

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