7.3 kW Bi Facial Rooftop Panels: ~7 year ROI: Fact OR fiction?

Hexane

KevinG said:

Screwdriva said:

26.05 kWh today despite an imperfect peak of the curve. Didn't expect this kind of performance from a triple aspect system.

Please feel free to post on this thread as not really relevant here:
https://forums.moneysavingexpert.com/discussion/3853851/renewables-talking-bout-my-generation#latest

True comment. Although, definitely worth posting after one year to say how close to 1/8 year financial return you are! As per original thread title.

Screwdriva

Thanks for the input. I've committed to posting a few kinds of updates on this thread: 1) New peaks/ highs achieved 2) Monthly generation. This will continue while other smaller milestones will be shared on the generation thread. Stay well! 

Screwdriva

New all-time high of 26.56 kWh for the bifacial system. Excellent looking graph here.

Solarchaser

I'd say that it looks like they are no better in good sun.
My 5.5 year old 4kw system 300 miles further north and ssw (so missing the last 1-2 hours of sun) generated 27kwh yesterday. 

Then again the advertising is for better work in low light rather than full sun right?

Screwdriva

Hard to say given the distance between us, and as 40% of the panels are placed in a E/W orientation. That said, I've posted generation for first 3 months of the year on this thread as well. 
What is your total generation for May 2020? It looks like I will hit 680 kWh at the end of tomorrow.

Screwdriva

That wraps up May 2020. A few highlights:
1) 14 Maiden O's this month (45% of the month @ 24 kWh or higher)
2) Average daily generation for May is 21.93 kWh
3) Total generation is 680 kWh vs 518 kWh in April.
Annual graph here.

Solarchaser

Quite a bit less, 540kwh according to my lux system reading CT clamps.

JKenH

Screwdriva said:

That wraps up May 2020. A few highlights:
1) 14 Maiden O's this month (45% of the month @ 24 kWh or higher)
2) Average daily generation for May is 21.93 kWh
3) Total generation is 680 kWh vs 518 kWh in April.
Annual graph here.

Attached is the May monthly report for a 4kw SSE facing system just down the road from me. https://pvoutput.org/list.jsp?df=20200501&dt=20200531&id=42476&sid=44174&t=m&v=0

Given that you have East and West orientations I would be very happy with the performance from your system.

chamelion

A beautiful 718kwh generated in May here - my record by about 60kwh! 

Waywardmike

This is an interesting thread.
My 5 year old 4kWp system generated 696.99 kWh last month here in Bedfordshire.  The best month ever, by quite a margin.  My system has far outperformed any estimates given to me at time of install.  My best day last month was the 25th with 28.4 kWh produced (also my best day since install).
Just for reference, if it's useful to your comparisons. my predicted generation from PVGIS is 3892 for the year.  the actual generation for each (full) year is:
2015 - 4375.24 kWh
2016 - 4346.997 kWh
2017 - 4082.215 kWh
2018 - 2937.65 (had a loft conversion and tin roof covering them for 3 months over summer)
2019 - 4481.484 kWh