By this point the sunshine in which the match started had given way to cloudy skies, a fairly strong wind and gentle rainfall, and break-point opportunities were few and far between.

BBC: Federer claims historic Paris win

The credit, which gives a tax break of 2.2 cents for every kilowatt-hour of energy produced by wind, was set to expire at the end of 2012 and will now include projects that complete construction in 2013.

FORBES: Wind Power Tax Credit Survives Fiscal Cliff Deal