Revision as of 03:27, 3 December 2024

PV Panel Embodied Energy

embodied energy of 1000 MJ/kg or 300 kWhr! [1]
Compare to steel at 20 MJ/kg [2], and 200MJ/kg more than this for aluminum [3]
How many grams of silicon are needed for 1kW of PV panels? 2 kg [4], based on 2g/W.
5% of weight of PV is silicon [5]. 76% is glass, 10% is aluminum, and 10% is EVA.
Embodied energy of EVA is about 80 mega joules per kilogram [6]

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 *5% of weight of PV is silicon [https://www.google.com/search?q=composition+of+a+pv+panel+by+weight+of+materials&oq=composition+of+a+pv+panel+by+weight+of+materials&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCTE1ODcxajBqNKgCArACAQ&sourceid=chrome-mobile&ie=UTF-8#sbfbu=1&pi=composition%20of%20a%20pv%20panel%20by%20weight%20of%20materials]. 76% is glass, 10% is aluminum, and 10% is EVA.
 *Embodied energy of EVA is about 80 mega joules per kilogram [https://www.google.com/search?q=embodied+energy+of+ethyl+vinyl+acetate&oq=embodied+energy+of+ethyl+vinyl+acetate&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDYzMjJqMGo0qAIBsAIB&sourceid=chrome-mobile&ie=UTF-8#sbfbu=1&pi=embodied%20energy%20of%20ethyl%20vinyl%20acetate]
+=Total for 1kW of PV=
+*600 kWhr for 2 kg of silicon
+*
 =Links=
 *[[DIY Glacial Acetic Acid]]
 *Wikipedia says 585 kWhr/m2 of PV panels? [https://sustainability.stackexchange.com/questions/8317/what-is-the-typical-embodied-energy-of-a-solar-photovoltaic-panel#:~:text=According%20to%20the%20Wikipedia%20article,rated%20based%20on%20surface%20area.]