Growatt WW and an Octopus heat pump

beebop

Hi there,
We have recently had a 9KW Daiken heat pump and hot water tank installed by Octopus. We also have an EV with an OHME charger and Growatt 3600 Hybrid inverter and 7Kw of batteries. Our current tariff is Octopus Intelligent Go and our WW account is configured as follows:
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Our hot water tank charges itself between 1am-3am and it seems to be discharging the battery. Assuming we change change the water heating timing to say 12am, is it possible to use WW to only charge the batteries after say 2am so that the batteries stay charged until morning?

MrMessy

beebop Is there a reason you want to "Hold charge" your battery, rather than just allowing it to charge to full during the default IOG period?

Most people with this sort of set-up, myself included, need all the battery capacity they can muster over winter.
Charge to 100% overnight, charge from solar, charge in any smart charging slots.
More is more.😁

KristianS

MrMessy I have the same thought. I am not sure why in this case @beebop you have enabled 'Hold Charge' set to ON. There are other use cases where I can see the value in holding charge, but not in the instance you describe above. But maybe I am missing something