The cost of clean energy

Gov. Martin O'Malley's offshore wind proposal would add a fee to monthly electricity bills, potentially more than doubling clean-energy surcharges in the Pepco service area to nearly $7 (based on an average monthly bill of $147 for 950 kilowatt hours).

Gov. Martin O'Malley's offshore wind proposal would add a fee to monthly electricity bills, potentially more than doubling clean-energy surcharges.

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