Yeah so running tumble/dryer/dishwasher in day to make use of the solar would work well I think the bit I am a little concerned about is we use mostly use our electric oven/hob/air fryer for dinner which is around 6/7 so usually when it’s dark half the year so all this load would be on battery and just kill it each evening? Or Is solution just get bigger battery lol?
Pretty much yes and yes, its just getting the balance right between paying more for a bigger battery vs the extra you would spend overnight, also a bigger battery may never get full during the winter months depending on daytime usage and how much you get out of the solar, ideally you would want to calculate how much your cookers would use, i.e. using a 2KW oven for an hour would use 2KWh or less or power, as it tends to use less to maintain temp when up to temp, same with Hob, not sure on Air fryer as never used one.
Possibly one of the things to be aware of for the sellers Guarantee is it appears to be KWh produced over the year, so you might easily meet that but a larger percentage is during the summer months, and possibly fed back into the grid.
Im sure there must be some experts who can work everything out and get a close calculation, not sure i trust every seller, I know there was a lot of talk about something similar to PPI mis-selling for solar a while back, but that was for early systems.
I built my own system over the last year but only just got the battery usable as where I installed them on my garage room its a bad spot for winter as its behind a line of houses that block direct sunlight for most of the day but the solar is starting to produce more per day now.
Ive got a 3KW solar inverter with 3.4KW of solar panels connected to it in 2 banks of 1.7KW , but one of the banks is north facing so not the best to generate but you still get a decent amount of power on a bright day from it. Ive also got a smaller system I started with on my Shed room with 1.2KW but they are laid flat so not as efficient.
The Shed system cost me about £900 but it was built using smaller panels and inverters and I wasnt aware that the bigger stuff was cheaper per KWH to buy and wanted to tes the waters first.
The Garage system cost about £1700 and about £900 for the battery storage system which I setup with a used storage inverter and using cheap Lead Acid batteries but that only holds about 2KWh at the moment, I can get a bit more out of it by putting things on during the day to pull power from the battery and then let the solar top it up again. There is issues with using Lead Acid Batterys but I just started with them as they were cheap and wasnt sure how well the system would work, the plan was to upgrade to Lithium later on once the LeadAcid ones have had their day.
Even with those 2 combined some dark days over winter I didnt even produce .5KWh per day, now that the days are longer and brighter Im starting to produce more each day, averaging about 7KWh this week and with the battery and Solar diverter for the Immersion heater I only export about 0.5KWh a day but being a DIY system Im not eligable for any feed in payments, but should have free hot water for most of the summer.