Attorney General Martha Coakley is promising to review a power-purchasing deal announced earlier this month between the offshore Cape Wind project and the utility National Grid.
Under the 15-year contract, National Grid would pay 20.7 cents per kilowatt hour starting in 2013 for electricity purchased from Cape Wind. That could add an estimated $1.50 to the average customer's monthly electricity bill.
Coakley, who supports the project, said that as the state's official ratepayer advocate, her office will take a look at the deal to see if it's fair for consumers.
She made her comments during her monthly radio show on WTKK-FM on Thursday.
Gov. Deval Patrick supports the project, saying it could offset future spikes in the price of natural gas.
State regulators must still approve the deal.
This program aired on May 21, 2010. The audio for this program is not available.