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domhtoday at 5:02 PM3 repliesview on HN

> The batteries can fill up on the off-peak rate overnight at £0.07/kWh, and then export it during the peak rate for £0.15/kWh, meaning any excess solar production or battery capacity can be exported for a reasonable amount.

Honestly I didn't know this was allowed.

I recently got a heat pump and am on a time-of-use tariff (https://octopus.energy/smart/cosy-octopus/) and have been thinking about pulling the plug on battery storage for a similar purpose (charge during the cheap hours; run the house off battery during the day). I am currently using between 40-50kWh per day - anyone have similar usage to this and can recommend batteries for this?


Replies

dabeeeenstertoday at 6:02 PM

I just had Solaredge battery installed in my house in the UK (Had a solaredge PV and inverter so made sense even tho it was more than other setups). If you are up for a challenge https://springfall2008.github.io/batpred/ is AMAZING and basically optimises when to charge and discharge your battery.

I've got a heat pump and think my paypack period is going to be about 6 years.

Hit me up on bluesky (in profile) if you want more info!

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Perz1valtoday at 5:26 PM

Why wouldn't it be allowed? They're essentially renting their batteries and grids generally lack storage

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syncsynchalttoday at 5:16 PM

It benefits the grid to have people consume extra power when there's an oversupply, store it and give it back when there's undersupply. Why shouldn't it be allowed (even encouraged)?

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