Solar and battery system

rtho782

Hmm, interesting thanks. Is it just a crapshoot as to what gets approved? Can some sort of current clamp limit the maximum export whilst still allowing for larger levels of consumption locally from solar/batteries?

I had considered the possibility of upgrading the property to three phase, meaning cars can charge at 22kW and I have the option of a larger vrv heat recovery ashp when we do that, but obviously that is uncertain costs.

Screwdriva

QrizB said:

rtho782 said:

... if I measure on Google maps the apex of the roof is 13.4 meters west to east, so hoping for more than 6kW of panels?

Sure you can include it in your options - just double Screwdriva's £7k cost - but until your installer applies to your DNO, you won't know your limit.

Or you can take the quote I shared above and add £250 per extra panel. 28 X 420W panels = 11.8kW. ~£10.5K installed with a 10kW SolarEdge inverter, so not quite double. Add another £8K for the EV charger and AIO battery if needed or just £1500 for the Zappi.  

DNO approvals vary but I've rarely seen 10kW or lower applications in urban, major city environments. It does happen though.

rtho782

This is a village, population about 8,000.

I would like to be over 10kW just because the cars alone can be 7.2kW each on a single phase, I'd like to be able to charge at least one at a time at 32A without drawing from the grid.

I guess it's all up in the air until we move in. Very interested in that V2H charger although worried the cars won't play well with it, as neither support V2L.