Two business groups are saying Massachusetts can't afford the Cape Wind offshore wind project.

In full-page newspaper ads Thursday, the Associated Industries of Massachusetts and the Massachusetts Competitive Partnership say the state already has expensive energy, and the project's above-market power costs will make it tougher to attract business. The partnership has a well-known leadership, including Patriots owner Robert Kraft and Fidelity Financial Services president Abigail Johnson.

Cape Wind has Gov. Deval Patrick's backing, and regulators say its benefits as a large source of clean energy off a busy coast outweigh its costs.

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