We’d like to remind Forumites to please avoid political debate on the Forum.
This is to keep it a safe and useful space for MoneySaving discussions. Threads that are – or become – political in nature may be removed in line with the Forum’s rules. Thank you for your understanding.
📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!
8.5 kW Bifacial PV System: ~7 year ROI: Fact OR fiction?
Comments
-
My July was my best ever too since I had my PV in dec 22
4.8kWp 12x400W Longhi 9.6 kWh battery Giv-hy 5.0 Inverter, WSW facing Essex . Aint no sunshine ☀️ Octopus gas fixed 5.07 + Octopus Intelligent Flux leccy
CEC Email energyclub@moneysavingexpert.com3 -
My 5.1kW array managed 895kWhr for the month, which is a record (as I imagine everybody's is!).
What's remarkable is that is 28.9kW per day average, or 5.66 'O's (28.9kWhr/5.1kW). Anything over 5 is very good!
My absolute peak is 34kWhr in a day (6.67 'O') but that wasn't in July!. What's been noticeable is that peak power on a really hot day is up to 20% lower than expected from eg a sunny but cooler day at an equivalent time of year, due to panel/temperature degradation. What that says is that panels get really hot
2 -
Another record breaking monthly generation for August and the 4th consecutive (nearly 5th) 1+ MWh month.
- 10 x 400w LG Bifacial + 6 x 550W SHARP BiFacial + 2 x 570W SHARP Bifacial + 5kW SolarEdge Inverter + SolarEdge Optimizers. SE London.
- Triple aspect: ENE (2.7 kWp), WSW (3.3 kWp), SSE (2.4 kWp)
- Viessmann 200-W on Advanced Weather Comp. (The most efficient gas boiler sold)Feel free to DM me for help with any form of energy saving! Happy to help!3 -
Nice one @Screwdriva , my panels aren't bi-facial but I had similar records ,except June which hasn't surpassed the exceptional 23 which was my record until this July.
4.8kWp 12x400W Longhi 9.6 kWh battery Giv-hy 5.0 Inverter, WSW facing Essex . Aint no sunshine ☀️ Octopus gas fixed 5.07 + Octopus Intelligent Flux leccy
CEC Email energyclub@moneysavingexpert.com0 -
Another all time monthly record for September (670KWh). The bifacial system has already surpassed 2025's total annual generation (7.03MWh)
Hopefully this data provides useful insight for anyone considering bifacial panels or expanding their own system.
- 10 x 400w LG Bifacial + 6 x 550W SHARP BiFacial + 2 x 570W SHARP Bifacial + 5kW SolarEdge Inverter + SolarEdge Optimizers. SE London.
- Triple aspect: ENE (2.7 kWp), WSW (3.3 kWp), SSE (2.4 kWp)
- Viessmann 200-W on Advanced Weather Comp. (The most efficient gas boiler sold)Feel free to DM me for help with any form of energy saving! Happy to help!1
Confirm your email address to Create Threads and Reply
Categories
- All Categories
- 355.8K Banking & Borrowing
- 254.9K Reduce Debt & Boost Income
- 456.2K Spending & Discounts
- 248.3K Work, Benefits & Business
- 605.9K Mortgages, Homes & Bills
- 179K Life & Family
- 263.8K Travel & Transport
- 1.5M Hobbies & Leisure
- 16.2K Discuss & Feedback
- 37.7K Read-Only Boards