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This is really interesting, thank you! Didn’t realise there would be the option for a dynamic switch like that and just kind of wrote off the sunamp as was focussed on retention and storage of “power” rather than heat. Did you spec the system yourself or is there a company you’d recommend we talk to?
Creek_Tebsin
JonoMarshall
We get surprisingly good power even on cloudy days, or in Winter. At least 25% efficiency on our measly 4kW of panels. Although we do have the option to top-up the sunamp unit overnight on an economy tariff too.
You could use a manual/dynamic switch to always charge your batteries to [x]% first and then start working on the DHW? Typically, the sunAmp unit will be more efficient than your grid (and will last ~40k cycles, or ~50 years).