Solar Thermal vs. Solar PV: What''s Best?
If you can get 70% of that heat using thermal solar collector, then you would only need about 42 square meters (450 sq. ft) to generate as much heat as a typical home''s gas furnace (100,000 BTU/hr). Another advantage is that solar thermal panels only cost a small fraction (about 20%) of what PV panels cost per square meter.
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