What does a home battery cost and when does it pay off?

The biggest factor is capacity: how many kilowatt-hours the battery holds. On top of that come power, brand, whether you need a hybrid inverter, and the installation itself. A bigger battery costs more, but only earns more if you actually use that room.

If you search for thuisaccu costs or thuisaccu price: that is the same question as for a home battery. The words swap in search; the maths stays capacity, installation and what you save.

We deliberately don't show a fixed price here, because it moves. Your quote carries a current figure for your situation.

In practice at SolarFast you often see systems between 5 and 10 kWh. A smaller system costs less than a larger setup with a hybrid inverter, but only if you actually use that capacity. If the fuse box needs upgrading, that appears as a separate line in the quote.

Home-battery return is not a fixed folder percentage. It is the gap between power you would otherwise buy at a high rate and power you use from storage, minus charge and discharge losses. The more of your evening and night use comes from the battery, the stronger that saving.

That is why there is no national payback period that fits everyone. Purchase cost, capacity, your tariff, feed-in payment, how much you use in the evening, and whether you can still use net metering all matter. We calculate it on your usage instead of promising one figure.

A home battery is what makes evening use of your own solar power possible: charge by day, discharge later. Panels alone mainly generate during daylight; without storage, evening power still mostly comes from the grid.

Allow for charge and discharge losses: not every kilowatt-hour you store comes back one-for-one. Your quote shows what that means for your capacity, so payback does not look prettier than practice.

A battery pays back by letting you use power yourself that you would otherwise buy at a high rate. That works best if you use a lot in the evening, if the feed-in payment is low, or if you have a heat pump or EV charger. Net metering ends on 1 January 2027; storing your own power then matters more. Read more on our net metering page.

On our with versus without home battery comparison page we put the trade-offs side by side, so you can see when storage makes sense for your situation.

There is a side benefit too: a permanently installed system of at least 5 kWh, combined with solar panels, counts toward your home's energy label. Plug-in batteries do not. The effect on your label is small, but a better label can earn you a discount on your mortgage rate. The conditions and figures are in our article on home batteries and the energy label.

Until 31 December 2026 full net metering applies: feed-in is settled on your annual statement. That often makes storage less urgent today than after 2027, when you receive a payment for feed-in instead of offsetting. With a dynamic energy contract through our partner Frank Energie you can also charge when power is cheap.

You do not always have to pay in one go. Through the national Warmtefonds you can finance a home battery under conditions: among others solar panels (or install them at the same time), a fixed install by an installer (not a plug-in battery), and a maximum loan amount for the battery line. Current conditions are on that page.

Separate from loans: also see our pages on subsidy and VAT reclaim. What applies to you, we state clearly in your quote.

We look at your yearly use, how much of it falls in the evening, your feed-in payment and your tariff. From that follows how much a battery saves you per year and within what period it pays back.

You get a no-obligation quote within 24 hours (SolarFast service) with a current figure. No fixed price on this page, but numbers that hold today for your fuse box and consumption.