How can the ClearEdg5 be 11 times more productive than solar?

The ClearEdge5 produces about 43,000kWh per year in electricity, while a 5kW solar array will produce about 8,000 kWh per year – roughly 5 times the annual electricity production. At the same time, the ClearEdge5 will produce about 50,000 kWh per year equivalent in heat when the kWh is converted from BTU’s. The 5kW solar array will not produce any heat – combined this represents roughly 11 times the energy production of a 5kW solar array.