12 x 400w = 4.8kw if they are average panels but I agree about the price, a bit expensive, unless its grid tied with a big battery?
14 x 400 = 5.6kwh
6kwh was quoted not kw
Ok I will edit the post to keep you happy.
I would say that is 4 times over the top all for a return of 60 bucks a month. That will be almost 30 years to recoup the cost and then the electric gokart on top.
1 Like
Iâm sorry that youâre all crowing and no one can help me with my S21 contract problem.
1 Like
Your calculation is wrong. The panel may produce 400W but you have to multiply by a time period to get the unit of kWh which is what you pay for. 400W is peak instantaneous response in ideal conditions. In summer the peak will be lower than in spring due to the higher panel temperature.
So 14 x 400W working for 1 hour in ideal conditions will give you 5.6kWh, but hopefully in the summer your panels will get exposed to more than 1 hour of sunshine.
Thus your production over a sunny day should be around 20kWh for 12-14 panels, which is worth roughly 4 euros if you consume it all, much less if you export it at the lower rate which EDF pay for exported electricity.
1 Like
Is the problem your level of French or something else?
If it is online is there an interactive dialogue help box?
Can someone in real life come and help?
Shouldnât that just be 20kW (not per hour) over the whole day
1 Like
No.
If you had a 1kW bar heater. If you switch it on it draws 1kW until you turn it off. After running it for 2hrs it will have consumed 2kWh of electricity. You will pay for 2kWh of electricity x the rate for your electricity
1 Like
1 Like
Youâve saidâŚ
âŚbut also have saidâŚ
âŚwhich suggests that you are already receiving payment for power supplied & therefore have a contract already.
Iâm confused.
Hello and thanks for your kind responses.
The S21 contract is for reselling the surplus to EDF. Itâs done through the site EDF-OA (offre dâachat). They want you to do it completely on line, and there are many guides, which are completely understandable but the site wonât accept my replies, so I canât move on.
I have written EDF-OA a letter today sending them our two attestations Sur lâhonneur and hope that will result in them sending me a blank S21 to complete and send in, which is what I would prefer, if itâs possible.
Barbara
The most weâve seen is 33kw per day. 4.1 is the max kWh per hour
1 Like
Well good luck!
Yes, but I think they meant kW and not kWh.
I think you got that the wrong way round. It would be 4.1 kW output with 33 kWh maximum in a single day.
I have what is supposed to be 4.1 kW of panels, but the max I get is about 3.4 kW. The max I see per day is about 26kWh.
You will never get the full rating of the panels. Getting 83% as I do is quite good. Iâm not exactly south facing, and the roof angle isnât optimum so that reduces it somewhat.
Iâm well aware of what you refer to, but am confused why youâve said that youâve been gettingâŚ
âŚif you donât already resell i.e. have a contract.
Maybe youâve done some maths after reading the âIndex Injectionâ on your Linky?
The read out on the website tells us exactly what we are producing and using. Itâs just a matter of a contract for EDF to pay us for the surplus
Thats a massive assumption, is the roof at the exact angle facing the exact direction and even then it will not be in full sun 1st thing in the morning or indeed later on, you would need a solar tracking array to get the sort of figures you perceive. Absolutely not likely but I follow your idea but againthat would be reporting per day not per hour.
What is the return on buying 30 years of electricity from the grid without the âŹ60 income per month? Also the price rises in grid electric. Charging your EV from home is another big saving from your own panels all part of the solution.