Photosynthesis is considered to be 5% effieicnt.1 Solar photovoltaic panels to convert sunlight to electricity that you can buy are from 8 to 22% effieicnt.2 In the lab they have gotten up to 42% efficiency.3 Solar thermal panels used to heat hot water are from 60 to 80% effieicnt.4
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Photosynthesis is considered to be 5% effieicnt.1 Solar photovoltaic panels to convert sunlight to electricity that you can buy are from 8 to 22% effieicnt.2 In the lab they have gotten up to 42% efficiency.3 Solar thermal panels used to heat hot water are from 60 to 80% effieicnt.4
With 5% you are overestimating the efficiency of photosynthesis – at least when it comes to available energy output which is technologically useable.