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Plug-in home battery

Does what it says on the tin
GrahamPlatt
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Plug-in home battery

#709183

Postby GrahamPlatt » February 2nd, 2025, 8:16 am

Homewizard.

https://helpdesk.homewizard.com/en/arti ... ed-to-know

2.7kW, 800W i/o €1395 (+€25)

As yet only available in .nl

This is looking economically interesting.
And simple.

More https://techzle.com/homewizard-plug-in- ... later-time

BullDog
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Re: Plug-in home battery

#709188

Postby BullDog » February 2nd, 2025, 8:55 am

I use a UPS to run my router and telephone so that in a power cut I still have a connection to the Internet and my phone still works. I runs for several hours in a power cut. It looks to me like that device is essentially a larger version of what I have.

JonE
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Re: Plug-in home battery

#709191

Postby JonE » February 2nd, 2025, 9:13 am

BullDog wrote:I use a UPS to run my router and telephone so that in a power cut I still have a connection to the Internet and my phone still works. I runs for several hours in a power cut. It looks to me like that device is essentially a larger version of what I have.
Their FAQ states otherwise in a couple of places: "If the power fails in your home, the battery also switches off for safety. This prevents power from being left on during work. The battery cannot be used as an emergency power supply."

GrahamPlatt
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Re: Plug-in home battery

#709192

Postby GrahamPlatt » February 2nd, 2025, 9:14 am

BullDog wrote:I use a UPS to run my router and telephone so that in a power cut I still have a connection to the Internet and my phone still works. I runs for several hours in a power cut. It looks to me like that device is essentially a larger version of what I have.


Your PC gets plugged into the UPS. This is powerng your home (all the sockets).

bungeejumper
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Re: Plug-in home battery

#709197

Postby bungeejumper » February 2nd, 2025, 9:24 am

GrahamPlatt wrote:As yet only available in .nl

Presumably because, as the blurb says, it's been designed to align with the Dutch government's technical standards for this kind of apparatus. It might take a while before it can be re-specced for other markets?

It does requires a smart meter and solar panels, of course. But if I read the blurb correctly, it's effectively saying that this is an early-stage idea in search of angel funding:
"There are a large number in production, but these have different delivery times starting this summer. By making a reservation with a deposit of €50, you secure one of the batteries that are already in the production line and HomeWizard can scale up better."

Nice idea, though, at that price, which is low. I don't think I'd dump the generator just yet. :)

BJ

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Re: Plug-in home battery

#709208

Postby DrFfybes » February 2nd, 2025, 10:28 am

bungeejumper wrote:
GrahamPlatt wrote:As yet only available in .nl

Presumably because, as the blurb says, it's been designed to align with the Dutch government's technical standards for this kind of apparatus. It might take a while before it can be re-specced for other markets?

It does requires a smart meter and solar panels, of course. But if I read the blurb correctly, it's effectively saying that this is an early-stage idea in search of angel funding:
"There are a large number in production, but these have different delivery times starting this summer. By making a reservation with a deposit of €50, you secure one of the batteries that are already in the production line and HomeWizard can scale up better."

Nice idea, though, at that price, which is low. I don't think I'd dump the generator just yet. :)

BJ


Yes - definitely tailored to NL market and regs - for a start it mentions "Solar Surplus Penalties". https://balkangreenenergynews.com/dutch ... y-to-grid/ Similar was common in Spain (allegedly because of a too cosy relationship between the govt and the power generators) where exporting energy you don't use cost you money, hence many Spanish properties only have one or sometimes 2 panels.

And you thought our green energy system was screwed :)

Costwise - Roughly speaking in the UK for someone on a 25p import/15p export tariff you make 10p per day for every kWh of storage. So perhaps £100/year from that 2.7kWh plug in unit. You can get a 16kWh Fogstar 'plug and play' unit here to add to your solar setup for under £3k installed. Even that is only likely to save an average UK user under £300/year without dynamic pricing [1], and the Dutch plug in unit won't charge from the grid.

Paul

[1] On"Cosy Octopus" we get 3 periods a day at 12.52p (just under half price) during which we charge the battery. Jan consumption was 571 kWh, of which only 7kWh was not on the cheap rate (when oven/kettle/microwave etc demand was above the 5kW our inverter can supply), so we saved a little over £70 last month. We have multisplits for heating and use circa 4200kWh pa so the £7000 battery saves us about £550 :( I have disabled "charge from solar" so at least all our solar is exported at 15p rather than going into the battery which we can charge cheaper from the grid.

Hence why in the UK you should consider battery and solar as 2 seprate things :)

scrumpyjack
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Re: Plug-in home battery

#709225

Postby scrumpyjack » February 2nd, 2025, 11:59 am

I use the EON Next drive tariff, which you can now use even if you don't have an EV as long as you have batteries,

That gives 6.7p unit cost from midnight to 7am, 25p at other times (which I never use as the batteries cover all that).
The Export rate is 16.5p. So overall my leccy bill is negative even though it is a very large house and I have an EV.

Have SolarEdge kit including a backup unit which automatically switches to use battery power in the event of a mains failure.

DrFfybes
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Re: Plug-in home battery

#709236

Postby DrFfybes » February 2nd, 2025, 1:12 pm

scrumpyjack wrote:I use the EON Next drive tariff, which you can now use even if you don't have an EV as long as you have batteries,

That gives 6.7p unit cost from midnight to 7am, 25p at other times (which I never use as the batteries cover all that).


Interesting - I thought the BEV tariffs were only available if you have a car charger. With the electric heating our battery wouldn't last in this weather unless it was sunny enough to top it off in the afternoon but later in the year that sort of thing would definitely benefit us.

Paul

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Re: Plug-in home battery

#709256

Postby scrumpyjack » February 2nd, 2025, 3:33 pm

DrFfybes wrote:
scrumpyjack wrote:I use the EON Next drive tariff, which you can now use even if you don't have an EV as long as you have batteries,

That gives 6.7p unit cost from midnight to 7am, 25p at other times (which I never use as the batteries cover all that).


Interesting - I thought the BEV tariffs were only available if you have a car charger. With the electric heating our battery wouldn't last in this weather unless it was sunny enough to top it off in the afternoon but later in the year that sort of thing would definitely benefit us.

Paul


Just checked again and all they require is that you have a smart meter! Nothing else required

GrahamPlatt
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Re: Plug-in home battery

#709259

Postby GrahamPlatt » February 2nd, 2025, 3:55 pm

bungeejumper wrote:It does requires a smart meter and solar panels, of course. But if I read the blurb correctly, it's effectively saying that this is an early-stage idea in search of angel funding:
BJ


https://fosstodon.org/@frenck/113929886592625127


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