Quote:
Originally Posted by jwxr7
here's a summary of the last 7 days production from january 14th thru the 20th;
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Here is a comparaison between an unoptimized installation (mine toward to West with a fixed horizontal angle of 20° - roof integration) and an optimized one (jwxr7's toward to South with a horizontal angle optimized for winter).
| day | groar | kWh/Wc | jwxr7 | kWh/Wc |
| wed | 3504 | 1.17 | 40 | 0.14 |
| thurs | 3305 | 1.1 | 560 | 2 |
| friday | 4016 | 1.34 | 1280 | 4.57 |
| sat | 2651 | 0.88 | 140 | 0.5 |
| sun | 1471 | 0.49 | 440 | 1.57 |
| mon | 373 | 0.12 | 1060 | 3.79 |
| tues | 3649 | 1.22 | 1300 | 4.64 |
| average | 2709.86 | 0.9 | 688.57 | 2.46 |
We are not living in the same place (so different amount of clouds), but roughly at the same latitude. jwxr7's system is 280Wc while mine is 3000Wc. To compared I divided the Wh by Wc. jwxr7's system is currently 2.46/0.9=
2.72 times more efficient.
1st law for a DIY PV : build the installation to be able to optimize orientation and horizontal angle
Happily in winter I'm loosing 40% while in summer I'll loose only a few%. My system will also pay for itself thanks to incentives and selling rate.
Denis.
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Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.- kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
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(2.66 kg/l diesel)
- kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
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(59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
- Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
- Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...