Heat Pump + Batteria Domestica: The Perfect Combination

Why a pompa di calore and batteria domestica are a golden combination

A pompa di calore uses a lot of elettricità — in media 3,000-5,000 kWh all'anno for heating and hot water. That is comparable to the remaining elettricità consumption of an average nucleo familiare. Without a batteria domestica, you buy a large portion of that elettricità at the full grid price. With a batteria domestica, you store your own energia solare and use it to run the pompa di calore — even in the evenings and at night.

The combination becomes soprattutto interesting due to the abolition of the regime di scambio sul posto from 1 January 2027. Without scambio sul posto, exporting to the grid is only worth a fraction. Every kWh you consume yourself via your pompa di calore instead of exporting saves you the full tariff of €0.25-0.35/kWh.

How does the synergy work in pratica?

The synergy works as follows: during the day your pannelli solari generate elettricità. What you do not use directly is stored in the batteria domestica. In the evenings and at night — when the pompa di calore runs the most for heating — the system uses the stored elettricità. Specifically, this delivers the following benefits:

• Self-consumption rises from 30-40% to 70-85%: You use much more of your own generated elettricità.
• Lower grid consumption: Less expensive elettricità from the grid means a lower bolletta energetica.
• Pompa di calore runs on free elettricità: In the evenings and at night, the pompa di calore heats on stored energia solare.
• Dynamic tariff optimisation: With a contratto dinamico, the batteria charges when elettricità is cheap and discharges when it is expensive.
• Emergency power function: During a interruzione di corrente, the batteria can continue to power the pompa di calore and essential elettrodomestici.

Capacità calculation: how many kWh do you need?

The required capacità della batteria depends on your pompa di calore type and home size. An air-to-water pompa di calore uses 8-15 kWh on a cold winter evening. A hybrid pompa di calore switches to gas in extreme cold and uses less elettricità.

As a rule of thumb: take your average evening and night consumption (including the pompa di calore) and choose a batteria that can store at least that amount. For most nuclei familiari that is 5-15 kWh.

Small home (flat/terraced house)

For a flat or terraced house with a hybrid pompa di calore (COP 3.5) and 8-10 pannelli solari, a batteria 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 all'anno on top of what you already save with the pompa di calore alone.

Large home (detached/semi-detached)

For a detached house with a full air-to-water pompa di calore and 14-20 pannelli solari, we recommend 10-20 kWh. Consider the Anker SOLIX X1, Dyness Tower T10 or Huawei LUNA 2000. Expected savings: €650-1,000 all'anno. With a dynamic contratto energetico, an additional €100-200 can be added by ricarica intelligente during negative elettricità prices.

Worked example: savings by nucleo familiare type

The Dutch government encourages the combination of sostenibile technologies through the ISDE incentivo (Investment Incentivo for Sostenibile Energy and Energy Savings). In 2026 you can receive a incentivo for:

Please note: the ISDE incentivo only applies to hybrid and full pompa di calores, not to air conditioning pompa di calores. In addition, the 0% IVA scheme for pannelli solari and batterie domestiche applies until the end of 2026. That saves you 21% on the purchase price of the batteria.

ISDE incentivo and IVA benefit

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

• Choose a batteria with sufficient discharge power (at least 3.5 kW) so the pompa di calore can run entirely on batteria power.
• Set your pompa di calore to "solar boost": many pompa di calores can heat extra when there is a surplus solare, storing heat in the floor or boiler.
• Consider a contratto dinamico: in combination with a batteria domestica, you charge at low prices and save double.
• Schedule your hot water generation during the day: let the pompa di calore heat the domestic hot water when the sun is shining, so the batteria is fully available for heating in the evening.

Practical tips for the best combination

The combination of a pompa di calore with a batteria domestica is one of the smartest investments you can make in 2026. The synergy is clear: the pompa di calore provides efficient heating, the batteria domestica ensures that you run that heating on your own free energia solare instead of expensive grid elettricità.

With the abolition of the regime di scambio sul posto in 2027 and the available incentivi, this is the ideal time to invest. At Home Energy Solutions we are happy to advise you on the best batteria for your pompa di calore installazione. Request a no-obligation consultation.

Conclusion: invest smartly in a pompa di calore + batteria domestica

At Home Energy Solutions we help you choose the right batteria domestica to match your pompa di calore. Browse our range or schedule a free consultation.

Request advice or use our calculator to work out your personal savings.