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91 points PaulHoule | 1 comments | | HN request time: 0.192s | source
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Calwestjobs ◴[] No.43682778[source]
efficiency of plants - 1%

efficiency of photovoltaic - 20%

so photovoltaic is 15 times more land efficient then burning biomass. so we absolutely need trees to provide ecological functions. but in era of 5kwp PV array paying itself in 5-6 years(and still working afterwards), to heat water... its is ridiculous to cut trees and burn them to have hot water. 80% of time Canadian citizen can have 100% solar hot water (PV), less then 100% rest of the year.

replies(6): >>43683375 #>>43684904 #>>43690432 #>>43691835 #>>43692513 #>>43692550 #
1. constantcrying ◴[] No.43692550[source]
Totally fallacious argument. Trees grow by themselves in much of the world. They can be harvested with very low investment and directly contribute to a reduction of carbon in the atmosphere, as it now is the tree.