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ok well its good to know that its possible and i would not be the first, although a 20% penalty is pretty severe! out on interest what are you both using as chargers? the batteries i have in mind can take up to 400 amps (bms limit) but i cant imagine having an electricity contract that can...

just in case my description wasnt clear, i made a diagram. would it work? are there other options that wont cost a fortune? basically nothing with the capacity to feed-in can be connected to the grid, legally, and only an off-grid system can be legally built "DIY" this seems like a...

thanks, appreciate any suggestions. i wonder if it is compatible with diy style 48v batteries? these proprietary battery systems are so damn expensive. I am also qusationing wether a 3 phase inverter is even necessary at this stage, given what i have found out regarding the fact that the 3...

The inverter chosen is irrelevant really.., ill choose a suitable one when i have a clearer idea on the system i want. likely next year. Currently all my money is going into restoring the building (including all new wiring,plumbing/heating etc.) It was more the idea of having an off-grid...

Thanks so much for the detailed reply. Regarding the 3 phase system, it works like this here: Over 6kw (10kw in certain areas) , you are required to get a 3 phase supply. This is (i believe) due to less stress on inadequate infrastructure. I decided to keep the exisitng 3 phase setup...

Ok so im still trying to plan a solar setup that will do what i want within my budget. The house has a 3 phase grid supply currently on a contract limited to 6kw. 3 phase becuase it was previously a small countryside school.. Given the current very low price of solar panels, my large flat...

in any case, irrespective of the ridiculous heatpump issue (maybe even if i dont get a heatpump) my original questions still stand wrt designing an expandable system using cheaper (but not explody) equipment. some budget brands with good reputations? (deye/sol ark?) hybrid inverter or...

that is definitely the plan.. however i would also like to have a handle on the "worst case". i will of course ask the engineer to estimate consumption when only the "main" rooms are heated, and at temperatures we would likely use (22 degrees is too stuffy for me in winter) having said...

your ballparks are pretty spot on :ROFLMAO: ive done some simulations on nrel pvwatts calculator, and also some initial simulations of the heating requirements of the structure (you need to specify the materials of every element of the structure, windows, ground type, etc,etc.. . based on...

Hi all, newbie here. Im restoring an old countryside school in southern Italy. It will be our house. its 300 sq metres, flat roof , 50cm tuff stone walls. Unfortunately most of the state financing which was supposed to assist us, has just been stopped (new government) , so we are left...