3Bed – How many batteries ?

[waldek1928]

#78

How many batteries would you recommend for a three-bedroom house?

[Kevin]

#178

I was just reading through this thread and had the exact same question.

How many batteries would you actually recommend for a typical three-bedroom house? I’m also looking into adding battery storage and trying to figure out what size system makes sense without overdoing it.

Would be really helpful to hear what others have gone with and how it’s performing in real life.

[James]

#247

It really depends on how you plan to use them, but from my setup (3-bed semi) I went with around 10–15 kWh total storage, which usually means 2–3 batteries depending on the brand. That’s been enough to cover evening and night usage pretty comfortably, especially paired with solar. In winter it’s obviously less effective, but still helps reduce peak-time costs. If you’re aiming for more independence (like running most of the house off batteries overnight), you might want to go a bit higher. But for a typical setup just looking to cut bills, 2 batteries is usually a solid starting point.

[Keith]

#284

For a 3-bedroom house, most people I know who have solar panels tend to go for something between 8 and 12 kWh. That’s usually enough to keep using energy from the panels during the evening and night instead of pulling from the grid.

If you’ve got a heat pump or an electric car, then it’s probably worth thinking about something bigger. But if the goal is just slightly lower bills and some basic backup power, there’s probably no point going overboard with a huge battery 😅

[Billy]

#372

Hi everyone, I have 4 bedrooms and a 20 kWh battery storage system. It is more than enough for my needs. So, in your case, I would go with at least 10 kWh, and preferably 15 kWh. That would be the optimal choice, and you likely wouldn’t need to draw power from the grid.

[Ivan]

#402

Hi, I think a lot depends on your actual electricity usage. I have a 3-bedroom house myself, and if I were choosing today, I’d probably aim for around 10 kWh to start with. It’s usually easier to expand the system later than to pay upfront for capacity you may never fully use.
It’s also worth checking how much electricity you actually use in the evenings and overnight, as that often gives a better indication of the right battery size than the house size or number of bedrooms alone.

[Kristof]

#413

In my opinion, it’s worth leaving yourself a little room for the future. If you’re planning to get an electric vehicle, air conditioning, or a heat pump in the next few years, it’s sensible to choose a battery system that can be expanded later. For a typical three-bedroom home, I’d probably aim for around 10–12 kWh to start with, then see whether you actually need more capacity over time.

[Ahmedo]

#433

Hi, In my opinion, most people don’t need a huge battery system straight away. For a typical three-bedroom home, around 10–12 kWh is usually a sensible starting point. It gives you enough storage to use more of your solar energy in the evening and reduce how much electricity you need to import from the grid.
That said, it’s always worth looking at your own electricity usage, especially during the evenings and overnight. If you’re planning to get a heat pump or an EV in the future, I’d also recommend choosing a battery system that can be expanded later rather than paying for more capacity than you need right now.

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