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For full house backup, it sort of sucks right now. They are all charging a premium over what you can otherwise get if it's not specifically a whole home product.

What I've done and would suggest is right now looking for battery banks for big ticket important items that you'd want to stay on anyways in terms of an outage. A lot of those can function as a UPS. You can get a 1kWh battery pack for $400 right now. A comparable home battery backup is charging $1300 per kWh of installed storage.

I currently have a 2kWh battery pack for my computer/server/tv and a 500Wh pack for my fridge. Works great and it's pretty reasonably priced. The 500Wh gives my fridge an extra 6 hours of runtime after a power outage.

If I wanted to power shift, I have smart switches setup so I can toggle when I want to.

by a_paddy4 hours ago|

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In the EU €1800 gets you a 10kWh battery (ex install)

by rootusrootus3 hours ago|

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That's on the high side, I would guess. Depending on what brand you want, you can get 10kWh of LFP for under a grand right now in the US.

by gpm3 hours ago|

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With a BMS and inverter? What brand should I be looking at?

by rootusrootus3 hours ago|

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You will get a battery and BMS for that price. Decent inverters are expensive, however, so you won't get a whole 10kWh setup with appropriately sized inverter for under US$2K. Probably twice that.

I hesitate to offer any brand advice, because that is very situational, depends on what you're after, what experience level you have, what trade-offs you want to make, etc.

by gpm4 hours ago|

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I don't know if the market has improved but when I looked at this a year or two ago I concluded that the consumer market here was utter crap with hugely inflated prices.

The cheapest per kwh way I could find to buy a home battery (that didn't involve diy stuff) was to literally buy an EV car with an inverter... by a factor of at least two... I ended up not buying one.

Unfortunately cheap batteries doesn't translate to reputable companies packaging them in cheap high quality packages for consumers instantly.