1st Oklahoma Homes is proud to participate in the Oklahoma Natural Gas Energy Efficiency Program. This program encourages homebuilders in the Oklahoma Natural Gas service territory to construct energy efficient and environmentally friendly homes. Homebuilders are encouraged to install high efficient, natural gas equipment that exceeds current building codes and standards. This program helps to reduce energy bills and lessen the home’s carbon footprint. Qualifying homes must have a HERS (Home Energy Rater) rating of 70 or below or as defined by current state code.