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[Sticky] Home energy storage & battery register

Mars · 2024-05-10T20:17:51Z

Much like our ASHP roll call, I’d like to start a list of homeowners with battery and energy storage solutions. If you have a battery, please leave the specifics in a reply, and I’ll update this list. FOGSTAR 15kWh Seplos Mason – @hughf 2 x Seplos 14.3k kWh – @misterb GIVENERGY 3 x 8.2kWh GivEnergy – @tim441 GivEnergy 9.5kWh - @judith 2 x GivEnergy 9.5kWh – @downfield GivEnergy 34Kwh HV stackable batteries – @technogeek GROWATT 6kWh Growatt – @majordennisbloodnok 5kWh Growatt – @agentgeorge HANCHU ESS 10 kWh Greenlinx LFP – @skd Hanchu ESS 9.4KW - @countryman-helmsley ESS-LV9.4 - @irmartini SEPLOS 2 x Seplos 14.3kW - @misterb Seplos 14.3kWh - @korwraith SOLAREDGE Solaredge Energy Bank DC coupled 10 kWh (9.7 usable) – @arundalep SOLAX 4.5 kWh Solax battery – @steve81uk 2x Solax 3kw batteries (Inverter Solax x1-Hybrid-G4) - @eqwilts SUNSYNK Sunsynk 5kW inverter with 2 x 5.32kWh batteries – @sheriff-fatman TESLA 2 x 13.5 kWh Powerwalls – @toodles Powerwall 3 – @algienon Powerwall 3 – @broadsman Powerwall 3 – @old_scientist REPURPOSED CAR BATTERIES Nissan Leaf (16kWh) – @kenbone

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TechnoGeek

(@technogeek)

Reputable Member Member

Joined: 3 years ago

Posts: 163

13/02/2026 7:32 am

@toodles definitely sounds like similar aims. I was kind of forced into the batteries/solar because of the EV. You cannot get a tariff to adequately cover both ASHP and EV. I need to charge EV overnight but then was loosing the savings with ASHP during the day due to the higher day rate. The EV needs 30 - 35Kwh and ASHP on a typical 6C day needs about 26Kwh

If I did this renewables project again I would do the solar and batteries first to get a revenue stream going then add the other tech over time

Regards

5 Bedroom House in Cambridgeshire, double glazing, 300mm loft insulation and cavity wall insulation
Design temperature 21C @ OAT -2C = 10.2Kw heat loss, deltaT = 8 degrees
Bivalent system containing:
12Kw Samsung High Temperature Quiet (Gen 6) heat pump
26Kw Grant Blue Flame Oil Boiler
4.1Kw Solar Panel Array
34Kwh GivEnergy Stackable Battery System

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Toodles

(@toodles)

Illustrious Member Contributor

Joined: 3 years ago

Posts: 2574

13/02/2026 8:43 am

@technogeek We don’t drive any vehicles and with our poor sight (my wife is partially sighted and I am registered blind), it is better to keep death off the roads! Cosy seems to be the best deal without any EV’s but at least, with 3, 3 and 2 hours each day at the cheapest rates, the scheme can work well with a battery charged at those times. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

👍

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TechnoGeek

(@technogeek)

Reputable Member Member

Joined: 3 years ago

Posts: 163

13/02/2026 12:10 pm

@toodles thankfully we have a range of tariffs to meet most people's needs. I am just one of those edge cases so require a little extra technology to make it financially viable.

The Missus has to replace her lease car in May and thankfully has chosen an Octopus Intelligent Go compatible model this time so happy days! 🤣

Regards

👍

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JohnnyB

(@johnnyb)

Reputable Member Member

Joined: 1 year ago

Posts: 102

16/02/2026 12:28 am

I've only just seen this thread, although I've only had eveything connected up for about 6 weeks.

I have a Fogstar 16kWh battery, 7.6kWp solar array and a Solis inverter.

So far it has all worked well and is nearly our electric bill already, but a 20 kWh battery would allow us to run all day from the battery even in a wet grey February.

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Batpred

(@batpred)

Noble Member Member

Joined: 1 year ago

Posts: 660

16/02/2026 9:36 am

Posted by: @technogeek

↑

If I did this renewables project again I would do the solar and batteries first to get a revenue stream going then add the other tech over time

We managed to get a revenue stream just with the battery..

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC

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Jancold

(@jancold)

Reputable Member Member

Joined: 3 years ago

Posts: 163

16/02/2026 12:40 pm

I have Solis 8Kw inverter and 2 * 16Kwh Fogstar batteries. No solar as yet. I have been on Intelligent Octopus Go since January this year and though almost doubling my Kwh use from last year my January bill was halved, and no gas of course.

Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.

👍

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