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> an average home battery system costs between $10,000 to $20,000 What size is this? In the UK you can get a 16kWh LFP battery for £2,700. I believe an inverte

> an average home battery system costs between $10,000 to $20,000 What size is this? In the UK you can get a 16kWh LFP battery for £2,700. I believe an inverter would be £1,500. This would cover one day of electricity usage for me if you exclude EV charging, double it to include that too. Note that my heating is gas. I’ve considered getting a setup like this just to charge it at night at 7p/kWh and use it during the day to save paying 30p/kWh but the ROI of saving £100/month is slightly too long. If prices come down further I’ll probably bite.

TheSpiceIsLife 2y ago
By your numbers the payback period would be about 3.5 years. A bit more for a transfer switch and some wiring and other accessories. That seems like reasonable investment.
moogly 2y ago
Is that Fogstar? Because looking at non-niche brands like Growatt, Goodwe, Givenergy, Solax, Huawei, LG Chem, etc., it looks to be more like the rest of Western Europe at ~€800-1000 per kWh (which is highway robbery to a depressing degree), or am I missing something like some green tax deductions? [Edited to use € instead of £ because it turns out I wasn't up-to-speed with current exchange rates]
- benjiro 2y ago
  Take a look here (titansolar DOT de) or ( etronixcenter DOT com) or ( secondsol DOT com)... If you look around, you can go as low as 50kwh for 6000 Euro. So around 120 Euro / Kwh on the low point. For the newer models with build in fire suppression, its around 150 Euro / Kwh. Ofcourse, self installation. Its those "professional" installation jobs that are so overpriced and where you pay a premium. Think my dad payed like 3.5K euro for a 5K battery a few years ago (Huawei). And he passive regretted not just doing a second installation himself with a 20k battery (at that time was around 3.5k). Prices have collapsed. Bifu (double side) Panels are now like 70 Euro, even 62 Euro (32 panel packs). Note: German prices in the above stores, aka no tax on solar as its tax free in Germany.
- thebruce87m 2y ago
  Yes, fogstar: https://www.fogstar.co.uk/collections/solar-battery-storage/products/fogstar-energy-16kwh-48v-solar-battery https://www.fogstar.co.uk/collections/solar-battery-storage/... I’m no expert - is there any issue with fogstar?
  - moogly 2y ago
    Had never heard of them before, that's all. Only familiar with the usual players. They look interesting for sure. I've been so depressed with prices of home batteries compared to prices on naked prismatic LFP cells that I've semi-seriously considered DIY-ing one, but time is also money.

TheSpiceIsLife 2y ago

By your numbers the payback period would be about 3.5 years. A bit more for a transfer switch and some wiring and other accessories. That seems like reasonable investment.

moogly 2y ago

Is that Fogstar? Because looking at non-niche brands like Growatt, Goodwe, Givenergy, Solax, Huawei, LG Chem, etc., it looks to be more like the rest of Western Europe at ~€800-1000 per kWh (which is highway robbery to a depressing degree), or am I missing something like some green tax deductions? [Edited to use € instead of £ because it turns out I wasn't up-to-speed with current exchange rates]

benjiro 2y ago
Take a look here (titansolar DOT de) or ( etronixcenter DOT com) or ( secondsol DOT com)... If you look around, you can go as low as 50kwh for 6000 Euro. So around 120 Euro / Kwh on the low point. For the newer models with build in fire suppression, its around 150 Euro / Kwh. Ofcourse, self installation. Its those "professional" installation jobs that are so overpriced and where you pay a premium. Think my dad payed like 3.5K euro for a 5K battery a few years ago (Huawei). And he passive regretted not just doing a second installation himself with a 20k battery (at that time was around 3.5k). Prices have collapsed. Bifu (double side) Panels are now like 70 Euro, even 62 Euro (32 panel packs). Note: German prices in the above stores, aka no tax on solar as its tax free in Germany.
thebruce87m 2y ago
Yes, fogstar: https://www.fogstar.co.uk/collections/solar-battery-storage/products/fogstar-energy-16kwh-48v-solar-battery https://www.fogstar.co.uk/collections/solar-battery-storage/... I’m no expert - is there any issue with fogstar?
- moogly 2y ago
  Had never heard of them before, that's all. Only familiar with the usual players. They look interesting for sure. I've been so depressed with prices of home batteries compared to prices on naked prismatic LFP cells that I've semi-seriously considered DIY-ing one, but time is also money.