Heat Pump + Batería doméstica: The Perfect Combination

Why a bomba de calor and batería doméstica are a golden combination

A bomba de calor uses a lot of electricity — on average 3,000-5,000 kWh por año for heating and hot water. That is comparable to the remaining electricity consumption of an average hogar. Without a batería doméstica, you buy a large portion of that electricity at the full grid price. With a batería doméstica, you store your own solar power and use it to run the bomba de calor — even in the evenings and at night.

The combination becomes especially interesting due to the abolition of the compensación neta scheme from 1 January 2027. Without compensación neta, exporting to the grid is only worth a fraction. Every kWh you consume yourself via your bomba de calor instead of exporting saves you the full tariff of €0.25-0.35/kWh.

How does the synergy work in practice?

The synergy works as follows: during the day your paneles solares generate electricity. What you do not use directly is stored in the batería doméstica. In the evenings and at night — when the bomba de calor runs the most for heating — the system uses the stored electricity. Specifically, this delivers the following benefits:

• Autoconsumo rises from 30-40% to 70-85%: You use much more of your own generated electricity.
• Lower grid consumption: Less expensive electricity from the grid means a lower factura energética.
• Bomba de calor runs on free electricity: In the evenings and at night, the bomba de calor heats on stored solar power.
• Tarifa dinámica optimisation: With a contrato dinámico, the battery charges when electricity is cheap and discharges when it is expensive.
• Emergency power function: During a corte de energía, the battery can continue to power the bomba de calor and essential appliances.

Capacity calculation: how many kWh do you need?

The required capacidad de la batería depends on your bomba de calor type and home size. An air-to-water bomba de calor uses 8-15 kWh on a cold winter evening. A hybrid bomba de calor switches to gas in extreme cold and uses less electricity.

As a rule of thumb: take your average evening and night consumption (including the bomba de calor) and choose a battery that can store at least that amount. For most hogares that is 5-15 kWh.

Small home (flat/terraced house)

For a flat or terraced house with a hybrid bomba de calor (COP 3.5) and 8-10 paneles solares, a battery of 5-10 kWh is sufficient. The Anker SOLIX Solarbank 2 Pro or a compact Pylontech Force H1 are excellent choices here. Expected savings: €400-600 por año on top of what you already save with the bomba de calor alone.

Large home (detached/semi-detached)

For a detached house with a full air-to-water bomba de calor and 14-20 paneles solares, we recommend 10-20 kWh. Consider the Anker SOLIX X1, Dyness Tower T10 or Huawei LUNA 2000. Expected savings: €650-1,000 por año. With a contrato de energía dinámico, an additional €100-200 can be added by smart charging during negative precio de la electricidads.

Worked example: savings by hogar type

The Dutch government encourages the combination of sustainable technologies through the ISDE subvención (Investment Subvención for Sustainable Energy and Energy Savings). In 2026 you can receive a subvención for:

Please note: the ISDE subvención only applies to hybrid and full bomba de calors, not to air conditioning bomba de calors. In addition, the 0% IVA scheme for paneles solares and baterías domésticas applies until the end of 2026. That saves you 21% on the purchase price of the battery.

ISDE subvención and IVA benefit

With the right combination you can save up to 70% on your total energy costs. Here are our top tips:

• Choose a battery with sufficient discharge power (at least 3.5 kW) so the bomba de calor can run entirely on battery power.
• Set your bomba de calor to "solar boost": many bomba de calors can heat extra when there is a excedente solar, storing heat in the floor or boiler.
• Consider a contrato dinámico: in combination with a batería doméstica, you charge at low prices and save double.
• Schedule your hot water generation during the day: let the bomba de calor heat the domestic hot water when the sun is shining, so the battery is fully available for heating in the evening.

Practical tips for the best combination

The combination of a bomba de calor with a batería doméstica is one of the smartest investments you can make in 2026. The synergy is clear: the bomba de calor provides efficient heating, the batería doméstica ensures that you run that heating on your own free solar power instead of expensive grid electricity.

With the abolition of the compensación neta scheme in 2027 and the available subvenciones, this is the ideal time to invest. At Home Energy Solutions we are happy to advise you on the best battery for your bomba de calor installation. Request a no-obligation consultation.

Conclusion: invest smartly in a bomba de calor + batería doméstica

At Home Energy Solutions we help you choose the right batería doméstica to match your bomba de calor. Browse our range or schedule a free consultation.

Solicitar asesoramiento or use our calculator to work out your personal savings.