Last week, The US Senate narrowly approved an amendment that would require the nation's power utilities to use more renewable sources like wind, solar and wood.
The so called "renewable electricity standard" passed without the support of both of New Hampshire's U.S. Senators, Judd Gregg and John Sununu.
Gregg's vote of "No" caught supporters of the measure off guard.
New Hampshire Public Radio's Rebecca Kaufman reports.
