Expanded System Qualification Guidelines (what’s new is in pink italics)

To be considered a Million Solar Roofs System, it must be new or a system that was installed before 1997, failed and has been reconditioned. It must also meet one or more of the following criteria.

Photovoltaic and other Solar Electric Systems:

• Residential systems must be a minimum of 0.5 kW
  
• School, public building, and church systems must be a minimum of 1.0 kW.
  
• Commercial systems must be a minimum of 2.0 kW.
  
  
• Solar Thermal Water Heating Systems:
  
• Residential, school or public building water heating systems must be a minimum of 1.0 kW equivalent or 6 million BTU annual output or 20 square feet of collector area.
  
• Residential, school or public building swimming pool heating systems must be a minimum of 100 square feet of collector area or 1.0 kW equivalent or 6 million BTU annual output.
  
• Commercial domestic systems must be a minimum of 2.0 kW or 12 million BTU annual output or 40 square feet of collector area.
  
• Commercial swimming pool heating systems must be a minimum of 400 square feet of collector area or 2.0 kW equivalent or 12 million BTU annual output.
  
  Solar Thermal Space Heating or Cooling Systems:
  
• Collector area must be a minimum of 100 square feet or 4.0 kW equivalent or 12 million BTU annual output.
  
• For residential and school systems there is no minimum collector area, but systems must produce at least 3 million BTU annual output.