Courthouses in Hamilton and Paw nee Counties are among five picked by the state Energy Office for a pilot program of energy conservation. Complete replacement of heating and air-conditioning systems will be done. The work is intended to dem onstrate how savings can be made in nearly all counties. The Hamilton County project will cost $266,667, says The News- Register, with $200,000 paid by “Courthouse Trail,’’ title of the de partment project.