HOUSTON - U.S. power output in the week ended November 19 rose 0.9 percent from the prior week but was down 8.2 percent from the same week of 2008, Genscape said on Monday.

Uneven economic recovery and changeable fall weather are driving the numbers, Genscape said.

Genscape, a power industry data provider, uses sources including publicly available data and electricity demand measured at more than 280 power plants.

(Reporting by Bruce Nichols; Editing by David Gregorio)