Ah yes, the zeb tepeo. I did see that before, but those are quite expensive as I recall and I hate it when there is no prices on a website. But something to consider for sure.
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Heat your home, not the planet - Meet the ZEB | tepeo
Home heating accounts for 31% of carbon emissions - switch to a cleaner boiler powered by electricity that can be installed in 1-2 days.tepeo.com
Thanks for your input by the way. Good to see pros and cons of all this stuff.
That’s the one, something like that should be cheaper than batteries and have a far bigger thermal capacity.
No my whole day electric usage average is 3.2kW. I pull average during sleep 0.04kWh and during day when working around 0.20kWh then with some mini spikes for cooking and similar.
The last quote I had for electric boiler, solar with 9 panels, and a 12kWh battery about was £14,500. Boiler was £2.1k, battery £6k and panels £6.4k so yeah it probably is closer to £20k for a 16kWh battery. But yeah the return (this was 3 months ago) for that and my usage was long because of my low electric usage but was good I could keep my battery stored up relative and basically be grid free.
As you are only using 3kWh a day, a solar set up will never make any sense. The install cost alone will take a decade to recoup.
P.S. kw and kWh are two different measurements which is why I was confused.
As I said, I think you’ll be very disappointed with the performance of trying to run an electric boiler from batteries.
There is far more to take into account than just the battery capacity. The start up power draw will not be able to covered by the batteries, nor will the hot water supply (the boiler will be running at full tilt to achieve that). A huge chunk of the power that is consumed is that start up period.
Have a look at the tepeo product linked above. That is far more suitable for time shifting heat to a ‘battery’ that can be charged off peak. Combine that with solar and you might have something which is viable but I doubt it’s cost effective vs the alternative which I presume is currently gas.
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