In another of what seems like an infinite series of small steps to completion Cape Wind has had its power purchase agreement approved by state regulators in Massachusetts.

The Massachusetts Department of Public Utilities (DPU) has approved the 15-year power purchase agreement between National Grid and Cape Wind, following a five-month-long review.

In a statement the DPU said the pioneering, 420 megawatts offshore wind power plant was cost-effective “because its benefits well exceed its costs.” Last week G.E.R. reported that the DPU was close to wrapping-up its five months-long review and that a decision was expected this week.

“It is abundantly clear that the Cape Wind facility offers significant benefits that are not currently available from any other renewable resource, and that these benefits outweigh the costs of the project, said DPU Chairman Ann Berwick, in a prepared statement.(via)