"The truth is that that the Energy returned from Solar panels far outweighs the environmental cost of manufacturing them."
lets take a 100W solar panel as example. It produces average 500 Wh of energy per day.
It is 182.5 kWh per year and 3.65 MWh over 20 years lifetime.
How much you need to burn coal to produce similar energy?
Modern coal power staions have effectivity ~45%.
Burn 1 kg of coal-anthracite will get a 7.5 kW of thermal energy.
7.5 kW * 45% = 3.375 kW of electric energy
Lets compute amount of coal needed to get 3.65 MWh:
3.65 MWh / 3.375 kW = 1081 kg of coal.
Is 100W solar panel really outweighs the environmental cost of manufacturing them related to 1 ton of burned coal?
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Posted by: tema.zloitapok@gmail.com
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