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Discuss 4.57Kw PV with a 4Kw inverter. Inverter too small? in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net
It is in fact the other way round. You are allowed an inverter underrating of 80% and not that you should allow 20% extra over Wp rating.From my recollection, the inverter should be down-rated from the maximum generation. If the system actually hits 3.98kW, I believe that's too close. I'll double check my notes on it tomorrow and let you know.
It is in fact the other way round. You are allowed an inverter underrating of 80% and not that you should allow 20% extra over Wp rating.
unfortunately you've been ripped off, there was never any chance of a 20% increase in generation unless your previous system was heavily shaded and using a poorly performing inverter in the first place.hi, I have solar panels 7 years, for the last 2 years I have solaredge upgrade and I have my yearly data the last 2 years are worse than my original set up. I am not seeing the 20% raise in electric as promised. checked weather patterns and we do seem to have had 2 years with 20% less light. any thoughts. solaredge cannot see I problem, I can as I have lost ÂŁ2600 plus yearly interest for something that is losing me money.
unfortunately you've been ripped off, there was never any chance of a 20% increase in generation unless your previous system was heavily shaded and using a poorly performing inverter in the first place.
Please complain to trading standards about the company who mis-sold you that 'upgrade'.
thanks for info.unfortunately you've been ripped off, there was never any chance of a 20% increase in generation unless your previous system was heavily shaded and using a poorly performing inverter in the first place.
Please complain to trading standards about the company who mis-sold you that 'upgrade'.
thanks for message, yes it said up to 25% but 3 of the first 5 years are better than the last 2 years with solar edge, there,s only 120 kwhs between my best year and worst, also its strange I would have dust only the solar edge years?. I will just go to smalls claims court thanks for info about trading standards.He wont get anywhere with complaining to trading standards, they stated 'up to' which is as good as saying, you're not going to get anything.
As for the performance issues, I've seen a 10% reduction in power production just with having a fine layer of dust on the panels. Fine this was on a site generating 80MW, but the principal is the same.
thanks for message, yes it said up to 25% but 3 of the first 5 years are better than the last 2 years with solar edge, there,s only 120 kwhs between my best year and worst, also its strange I would have dust only the solar edge years?. I will just go to smalls claims court thanks for info about trading standards.
i know thanks, but 2 years ago they cleaned panels when fitting system and panels are self cleaning" if you believe paperwork". cheers Rob.I wasn't suggesting that the panels being cleaned was your issue. Just pointing out that poor maintenance can reduce their output over time.
i know thanks, but 2 years ago they cleaned panels when fitting system and panels are self cleaning" if you believe paperwork". cheers Rob.
hi, I have solar panels 7 years, for the last 2 years I have solaredge upgrade and I have my yearly data the last 2 years are worse than my original set up. I am not seeing the 20% raise in electric as promised. checked weather patterns and we do seem to have had 2 years with 20% less light. any thoughts. solaredge cannot see I problem, I can as I have lost ÂŁ2600 plus yearly interest for something that is losing me money.
We've been carrying out a cleaning experiment on a Solar Edge monitored system so we can compare panels performance side by side. We clean one panel every 2 months, one every 6 months and one is left dirty. The difference in performance is around 0.3%.thanks for that Rob I now know to, believe nothing a solar salesperson says or the claims they make on paper.
Reply to 4.57Kw PV with a 4Kw inverter. Inverter too small? in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net