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Colorado Rates and Tariff Information
Please view the "Meter Reading Cycle Information " for information about how our billing cycles work and how bills are prorated.
Residential customers: be sure to pay your energy bill on time to avoid late payment fees.
Renewable Information
Renewable Energy Standard Compliance Plan
Renewable Energy Standard - Solar Program FAQ (30K PDF)
Wind Integration Study (4.1 MB PDF)
Windsource® filing
Rate Case Information
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