GRAND FORKS, N.D. (AP) _ The North Dakota Public Service Commission says five companies have filed letters of intent to start construction this year on wind farms that would add 686 megawatts of wind power capacity.
Commissioner Brian Kalk says the five proposals would amount to about $1 billion worth of construction if they are completed.
The industry had gone into a slump of sorts because the law authorizing a production tax credit of 2.2 cents per kilowatt-hour of wind energy was set to expire at the end of 2012.
But the extension of the federal subsidy late last year helped revive interest in developing new wind energy projects in the state.
The 686 megawatts would be a 41 percent increase of the state's wind energy capacity.