Discover what a home battery will cost in 2026. Compare prices per capacity, view installation costs and discover when a home battery is profitable.
Average cost for a home battery installer (average)
A home battery stores excess power that your solar panels generate. Instead of supplying this electricity to the grid at a low feed-in rate, you use the stored energy yourself later, for example in the evening and night. This is becoming increasingly interesting now that the netting scheme will be gradually phased out from 2027.
Home batteries operate on lithium iron phosphate (LFP) technology, the same technology used in electric cars. They are safe, last a long time (10 to 15 years) and lose minimal capacity over time. The most common capacities for households are 5 to 15 kWh.
A 5 kWh home battery will cost an average of 2,500 to 4,000 euros in 2026, including installation. A 10 kWh system costs 4,500 to 7,500 euros and a 15 kWh system costs 7,000 to 12,000 euros. The price per kWh of storage capacity decreases as you choose a larger system.
The installation costs are 500 to 1,500 euros, depending on the connection to your inverter and meter cupboard. If you already have a hybrid inverter (which can control both solar panels and batteries), installation costs are lower. An existing string inverter often requires an additional battery inverter.
A home battery is most cost-effective if you have solar panels and are not at home during the day. In that case, you supply a lot of electricity back to the grid at a low rate. With a battery you store that electricity and use it yourself in the evening at the higher consumption rate. The difference between supplying and consuming yourself determines your savings.
With the phasing out of the netting scheme, the difference between the feed-in tariff and the consumption tariff will increase. In 2027 you will receive approximately 80% compensation for returned electricity, in 2030 only 40%. This makes the payback period for a home battery more favorable every year. In 2026, the payback period is on average 7 to 12 years.
The required capacity depends on your evening and night consumption. An average household uses 5 to 8 kWh in the evening and at night. A 5 kWh battery covers a large part of that, a 10 kWh battery covers almost everything. Measure your consumption pattern for a few weeks with a smart meter or energy manager before you choose.
Also take future consumption into account. If you plan to purchase an electric car or install a heat pump, a larger battery may be wise. Most systems are modularly expandable, so you can add extra capacity later.
A home battery is usually placed in the garage, utility room or meter cupboard. The appliance is about the size of a small refrigerator and weighs 40 to 120 kg, depending on capacity. The installation takes on average half to a full day. Always have the battery installed by a certified installer who has experience with energy storage systems.
Modern LFP batteries are very safe and have no risk of thermal burnout like older lithium-ion technologies. They do not require active cooling and work reliably at temperatures from 0 to 45 degrees. Make sure there is sufficient ventilation and keep the battery out of direct sunlight.
| Service | From | To | Unit |
|---|---|---|---|
| Home battery 5 kWh | €2500 | €4000 | total |
| Home battery 10 kWh | €4500 | €7500 | total |
| Home battery 15 kWh | €7000 | €12000 | total |
| Installation and connection | €500 | €1500 | per installation |
| Hybrid inverter (if necessary) | €800 | €2000 | per piece |
| Energy management system | €200 | €500 | per piece |
| Expansion extra battery module | €1500 | €3500 | per module |
A larger battery costs more but offers more storage capacity. The price per kWh decreases for larger systems.
If you already have a hybrid inverter, installation costs are lower. Otherwise, an additional battery inverter or replacement is required (800 to 2,000 euros).
Premium brands such as BYD, Tesla Powerwall and Huawei are more expensive but offer longer warranties and better software.
The phasing out of the netting scheme makes a home battery more profitable every year because the difference between supplying it and self-consumption increases.
A 5 kWh home battery costs 2,500 to 4,000 euros including installation. A 10 kWh system costs 4,500 to 7,500 euros. A 15 kWh system 7,000 to 12,000 euros. The installation costs are 500 to 1,500 euros.
A modern LFP home battery lasts 10 to 15 years and retains 80 to 90% of its original capacity after 10 years. Most manufacturers offer a 10-year warranty.
Without solar panels, a home battery is only profitable with a dynamic energy contract, where you buy cheap and consume expensively. With solar panels the return is much higher because you store your own generated electricity instead of supplying it back.
An average household needs 5 to 10 kWh. Measure your evening and night consumption to determine the correct capacity. When in doubt, choose a system that can later be expanded with additional modules.
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