At about 01:15 CDT, a Cessna 177RG struck a tree during an aborted landing at the Walker County Airport. The pilot reported minor injuries. The pilot said that the airplanes electrical system became inoperative about 22 miles from the airport and he was unable to activate the runway lights. He attempted to land by estimating the location of the runway, based on its relative location to the taxi lights. The airplane touched down on the runway, but the pilot felt the airplane was drifting. He aborted the landing, and on climbout the airplane struck a tree.