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Doing some maths on our solar panels and battery.
Last month, we only paid for 10% of our electricity!
I'm now crunching the numbers to see just how much the 4.8kWh battery has saved us.

🌞 + 🔋 = 🥰

These aren't the final numbers - but are pretty indicative.

In the last 12 month, having 5kW of solar panels, and a 4.8kWh battery, has saved us a massive two-thirds of our electricity bill!

And that isn't even taking into account how much we sold back to our neighbours.

More maths!

Over the last 12 months, we purchased about 1.2MWh from the grid.

Across the same time, we sold 1.2MWh back to the grid!

I think that means our panels and battery have got our domestic consumption down to !

It also knocked about £750 off our electricity bills.

Now I just need to find a way to replace our gas boiler. Sadly can't have a heat pump.

@Edent what's your barrier to going heat punk?

DamonHD

@Edent are you in a conservation area? If not then at least two of the restrictions you list may (no longer) apply, and the rules continue to be relaxed further. I am also in a terrace but I think that we are going to be able to make a heat pump work.

@Edent BTW solar diversion into a compact heat battery currently does most of our DHW.

@DamonHD @Edent Heat pumps are apparently a challenge to run off battery - my system is limited to about 4kW max discharge and the heat pump can pull a lot more than that. We'll see how this works out in practice.

@ryanc @DamonHD
Yeah and when it is sunny, we don't have any need for hot water.
We tried it with an iBoost and it was just a waste of energy.

@ryanc @Edent My battery is low power (and I cannot command it in any useful way) and so I do not expect it to interact in any special way with a heat-pump, any more than it does with the heat battery. I do not expect solar to make any significant contribution to space heating. I do now get most of our hot water without gas, from solar, and quite a lot from the grid when low carbon.