(a) Based on the results of the energy audit conducted under § 58.11 (relating to energy audit), a public utility shall install or arrange for the installation of applicable program measures designed to reduce public utility bills, usage or demand for space-heating, space-cooling, water-heating or baseload end uses which may include any of the following:

1. (1) For residential space-heating or space-cooling customers, applicable program measures may include the installation of insulation, furnace replacement or furnace efficiency modifications, programmable thermostats, infiltration measures designed to reduce the flow of air through the building envelope or the repair or replacement of chimneys, windows, exterior doors, service lines, air conditioner installations or replacements or efficiency improvement and other major appliance replacements or retrofits or efficiency improvements.

2. (2) For residential water-heating customers, program measures may include any of the following:

   1. (i) Installation of control devices on water heaters or other major appliances.
   2. (ii) Installation, repair or replacement of water heater insulation and pipe insulation.
   3. (iii) Installation of devices reducing the flow of hot water in showers, faucets or other equipment.
3. (3) For residential high-use electric baseload customers, applicable program measures may include lighting efficiency modifications, refrigeration replacements or efficiency improvements, repairing or replacing water heaters which do not provide primary heating for the dwelling, air conditioner installations or replacements or efficiency improvements and other major appliance replacements, retrofits or efficiency improvements.