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Indevolt Batteries UK Support & Info Thread
Posted by: @iradiatewhat if I configured it to charge as much as it could during the cheap tariff period (00:30 to 05:30) in winter and switch to charging by day in summer.?
That tells me your highest priority is cost per kWh, rather than "being green" for example.
Charging a storage battery in the small hours of the morning means that you'll predominately be using electricity generated by a Combined Cycle Gas Turbine (CCGT) plant.
When a CCGT starts up, it's basically a jet-engine with an exhaust running at over 1000°C.
It takes a few hours before that exhaust heat has raised the temperature in a boiler to a sufficiently high temperature and pressure to rotate the turbine in the 2nd stage of generation.
Once the plant moves from Open-cycle to Combined-cycle the efficiency will increase to about 50%. That's not great, but it's cheaper than throwing wasted heat into the atmosphere.
CCGT managers therefore wish to keep operating in Combined Cycle mode throughout the night. To do so they lower the price to something very small, possibly even operating at a loss. But at least they're supplying electricity which might otherwise have been generated by an offshore wind farm.
As you can imagine, the Cheap-Rate overnight period isn't going to be with us for much longer.
It's not going to pass anyone's idea of Net Zero.
Do you have an inherent objection to installing a hybrid inverter and storage battery on L2 in addition to the Powerwall on L1?
That could use a CT clamp to provide Zero Export to grid, whilst still allowing the battery to be charged using what's being generated from your solar panels.
Whats the model of 3ph inverter which you already have?
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