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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]

Total for 1kW of PV

• 600 kWhr for 2 kg of silicon
• 3kWhr per my for glass, or 90 kWhr for 30 mg glass.

Links

• DIY Glacial Acetic Acid
• Wikipedia says 585 kWhr/m2 of PV panels? [7]