Solar plus Battery Quotes

TooCautious

Hello All,

Just to add to this thread, I have created a spreadsheet based on the excellent garydoessolar 'solar calculator 3 seasons' one, but I have added inputs for variable import and export tarriffs i.e. Octopus Flux.

Using this tarrif and utilizing both cheap off-peak battery top-up and peak rate battery discharge it appears that my imported cost would approximately equal my export revenue, so close to free electricity. I realise that the spreadsheet can never be entirely accurate and depends on a number of factors - for one, who knows what the weather has in store - but the calculations do seem to be remarkably favourable. But is this even possible?

Excuse my ignorance but could I also ask about export limitations. If I get G99 approval for a 6kW inverter, what does that actually limit?

Thanks in advance.

Netexporter

Excuse my ignorance but could I also ask about export limitations. If I get G99 approval for a 6kW inverter, what does that actually limit?

A G99 connection allows 17kW export for single phase, 50kW for 3-phase. So on a single phase supply you could have two Givenergy A-i-Os and a 5kW Givenergy solar inverter all exporting at once, on a sunny summer day.