Solarpunk technology

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Goodbye to the idea that solar panels “die” after 25 years. A new study says the warranty does not mark the end, and real-world performance can last for decades (www.ecoticias.com)

submitted 1 week ago by poVoq@slrpnk.net to c/technology@slrpnk.net

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[–] cogman@lemmy.world 6 points 1 week ago (1 children)

Oh no. Water heaters are the most efficient form of solar. Newer solar water heaters might be a bit more efficient than old systems, but we are talking like 80->90%. PVC solar peaks in the 20% range.

[–] gandalf_der_12te@discuss.tchncs.de 1 points 1 week ago (1 children)

20% of a looot of energy is still a lot though

[–] cogman@lemmy.world 1 points 1 week ago

What's funny is it's enough energy that a heat pump water heater + solar ends up being more efficient than a solar water heater. Especially in a warm environment.