PROVIDENCE - The state Department of Environmental Management is seeking bids from developers to construct one or more wind turbines in Narragansett.

The DEM is working with the town to erect commercial-scale wind turbines on coastal land owned by the town and the state. The three state-owned sites being considered are at Black Point off Ocean Road, on the west end of the Escape Road in Galilee and at Camp Cronin, on the west shore of Point Judith. In addition, several pieces of land owned by the town are being studied, including the Scarborough Treatment Plant on Ocean Road and the Department of Public Works facility on Westmoreland Street.

Energy produced by the proposed turbines would be used at DEM facilities at the Port of Galilee and at state camping grounds and beaches in Narragansett.

"This proposal is supportive of Governor Carcieri's goal to provide Rhode Island with 15 percent of our energy with renewable-energy sources by 2015," DEM Director W. Michael Sullivan said in a statement.

The state and town are seeking bids from private developers to build the turbines under several scenarios:

•The developer will own, operate and maintain the turbines and lease property from the state or town. The lease could be a flat payment, a flat payment with a premium payment dependent upon the amount of energy produced or payment plus the provision of power to state park or beach facilities.

•The turbines would be jointly owned by the developer and the state or town. Revenues from energy production would be split between the partners.

•The state or town will own the turbines and provide payments to the developer based on the amount of electricity generated.

•Other proposals put forward by bidders.

Proposals must be submitted to the Department of Administration, Division of Purchases, by 2 p.m., May 19. The request for proposals is posted online at www.purchasing.ri.gov/RIVIP/StateAgencyBids/7240880.PDF .