Tag: solar energy research

‘Free Energy’ from the Sun Keeps Getting Cheaper

99.99% Price Drop! From $76 per watt in 1977, the cost of silicon solar cells has fallen to $0.20 per watt in 2020 (full story) With the recent 2-year extension of the US Investment Tax Credit (ITC) for installing residential solar systems, your reasons… Continue Reading “‘Free Energy’ from the Sun Keeps Getting Cheaper”