Solar battery storage prices in Belgium in 2026
Clear ranges by capacity (5, 10 and 15 kWh+) and by chemistry (LFP or NMC), what really drives the bill, and the aid available in Belgium. Everything you need to size up your storage project before even requesting a quote.
Indicative ranges, aid not deducted.
Solar battery prices by technology and capacity
Ranges for a battery supplied and installed, including electrical connection and commissioning. Prices incl. VAT for a system coupled to a new or existing photovoltaic installation.
| Technology | 5 kWh flat or compact house | 10 kWh semi- or detached house | 15 kWh+ large house or full autonomy |
|---|---|---|---|
| Lithium LFPBYD, Pylontech — safe & durable | 3 500 – 5 000 € | 6 000 – 8 500 € | 9 000 – 13 000 € |
| Lithium NMCTesla, Huawei — high density | 4 000 – 5 500 € | 7 000 – 9 000 € | 10 500 – 14 000 € |
| Hybrid (integrated inverter)SMA, Victron — all-in-one | 4 500 – 6 000 € | 7 500 – 10 000 € | 11 000 – 14 500 € |
Indicative prices incl. VAT, supply and installation included, aid not deducted. Exact sizing is determined during the free quote. Technology details: LFP, Tesla Powerwall, hybrid inverter.
What makes the price of your solar battery vary
At equal capacity, two quotes can differ by several thousand euros. Here are the items that really weigh in.
- Usable capacity (kWh)
Net capacity determines how many hours of consumption you can store. Going from 5 to 10 kWh does not automatically double the price thanks to economies of scale per module.
- Chemistry: LFP or NMC
Lithium iron phosphate (LFP) is safer, lasts 4 000 cycles and costs slightly less. NMC offers higher energy density but ages faster in high heat.
LFP vs NMC comparison → - AC-coupled vs hybrid inverter
An AC-coupled battery is added to an existing inverter (simpler, slightly less efficient). A hybrid inverter integrates everything in a single box, ideal for a new installation.
- Installation and cabling
Distance between the battery and the electrical panel, wall or floor mounting, mandatory fire protection: these items can add €300 to €800 depending on the configuration.
- Guaranteed number of cycles
A 6 000-cycle warranty (BYD HVS) is worth more over time than a 3 000-cycle one. Compare the cost per kWh stored over the lifetime, not just the purchase price.
- PV coupling and sizing
A battery oversized relative to your solar production is underused. A year-one production audit is essential to choose the right capacity.
Sizing your battery →
The aid available for your battery in Belgium
Battery storage benefits from more limited aid than photovoltaics, but schemes do exist, notably in Brussels and, indirectly, in Wallonia via coupling with panels. Here are the 2026 benchmarks — we calculate the amount and file the paperwork for you.
Renolution grant — storage
The Brussels Region supports installing a storage system linked to a photovoltaic installation through the Renolution programme. The amount is adjusted according to your income.
- Battery coupled to a PV installation already in service or installed simultaneously
- Home over 10 years old, or new under conditions
- Approved installer and itemised invoice required
Green certificates + energy grant
Wallonia does not grant the battery directly in 2026, but storage maximises your PV production eligible for green certificates and avoids surplus export: the economic gain is real even without a direct grant.
- PV installation coupled and eligible for green certificates (up to 10 years)
- Higher self-consumption rate = fewer kWh bought from the grid
- Regulatory change expected: follow the CWaPE updates
Get your net-of-aid price, within 48h
We check your eligibility, quote net of aid and handle the paperwork: you pay nothing upfront.
- We check your eligibility
Region, income, whether you have a PV installation: we identify the aid you can claim.
- We size and cost it
Analysis of your consumption profile, choice of the right battery, quote net of aid.
- We file the paperwork
Forms, technical annexes, RGIE compliance certificates.
- We deduct where possible
The aid is taken off your bill, with no cash advance.
In Flanders? Look into the Mijn VerbouwPremie — some municipalities include storage within the scope of the aid.
A range in 10 seconds
Pick a technology for a ballpark figure. The free quote remains the only precise estimate.
Indicative estimate based on 2026 rates, grants not deducted.
What a real quote looks like
A concrete case to bring the ranges to life — your project will be costed to your needs.
Indicative example dated 2026, excluding Wallonia where no direct grant is planned for standalone storage. Request your quote for a costing tailored to your installation.
Dig deeper before deciding
- Solar battery guide The whole silo
Technologies, autonomy, compatibility and maintenance all gathered on the pillar page.
See the full guide → - Which battery to choose? Comparison guide
LFP, NMC or hybrid: the detailed comparison to choose for your usage.
Read the comparison → - Sizing your battery Practical tool
How to calculate the ideal capacity for your consumption profile and PV production.
Calculate my capacity →
Your questions about solar battery prices
How much does a 10 kWh solar battery cost in Belgium in 2026?
For a 10 kWh battery supplied and installed, expect between €6,000 and €9,000 in LFP technology, and €7,000 to €10,000 in NMC or hybrid. The price varies with the brand, the type of coupling (AC or DC) and the installation works required.
What is the price difference between LFP and NMC?
LFP batteries (lithium iron phosphate, e.g. BYD, Pylontech) are generally 10 to 15% cheaper than NMC at equal capacity. They also offer more life cycles (4,000 to 6,000 versus 2,000 to 3,500 for NMC), which improves the total cost over time.
Does the price include installation and connection?
Yes. The ranges are for a battery supplied, installed and connected (electrical cabling, commissioning, configuration). Replacing or adding a hybrid inverter is itemised separately in the quote.
Are there grants for a solar battery in Wallonia?
In 2026, Wallonia offers no direct grant for standalone battery storage. However, coupling a battery to a PV installation eligible for green certificates maximises your return on investment. The regulatory situation is evolving: we keep you informed.
Is VAT reduced for a solar battery?
Yes, for renovation of a home over 10 years old, VAT is 6% instead of 21%. This reduction applies to the whole bill (supply + installation). We check your eligibility from the first contact.
How long does it take to recoup a battery?
With a typical consumption profile and a 5 to 8 kWp PV installation, the return on investment of a 10 kWh battery is generally between 7 and 10 years. The rising price of electricity and the removal of the reversing meter improve this equation year after year.
Your exact price, costed and net of aid
Ranges give the ballpark — the quote gives the figure. Analysis of your PV production, battery sizing and aid calculated, a single point of contact. In under a minute.
- Free and no obligation
- 6% VAT & aid calculated and deducted
- Costed quote within 48 working hours