The wind power's cost is as much as twice that of conventional power, but because it would be a small portion of the overall energypool, consumers would see at most a 2.2% increase to their monthly bills, according to estimates in a 2010 report by Massachusetts regulators.
The regions refused and insisted they would release their players after the final round of EDF Energy Cup pool games, leaving just five days for Gatland to prepare his side.
The court ruling means the Wales squad will be available for training on Monday, Tuesday and Wednesday this week before going back to their regions for the final round of EDF Energy Cup pool games on the weekend.