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*About 40 kWhr per my of EVA/aluminum x 8 kg = 320 kwhr | *About 40 kWhr per my of EVA/aluminum x 8 kg = 320 kwhr | ||
*'''Total 1010 kWhr''' | *'''Total 1010 kWhr''' | ||
*365*6kWhr~2100 kWhr/yr | |||
*Payback is thus 1/2 yr with only the above. | |||
=Links= | =Links= | ||
*[[DIY Glacial Acetic Acid]] | *[[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.] | *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.] | ||
Revision as of 03:59, 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]
Total for 1kW of PV
- 600 kWhr for 2 kg of silicon
- 3kWhr per kg for glass, or 90 kWhr for 30 kg glass. [7]
- About 40 kWhr per my of EVA/aluminum x 8 kg = 320 kwhr
- Total 1010 kWhr
- 365*6kWhr~2100 kWhr/yr
- Payback is thus 1/2 yr with only the above.
Links
- DIY Glacial Acetic Acid
- Wikipedia says 585 kWhr/m2 of PV panels? [8]