Home Battery for New Builds: Include It in Your Building Plan

Why a new build is the perfect time for a home battery

Anyone building a new home faces a crossroads: make the right provisions now and prevent future renovation costs, or make expensive modifications later. For home batteries, the choice is clear: sooner is better and cheaper.

With a new build, you can install the wiring without any demolition work, size the consumer unit appropriately and reserve the ideal location for the battery. This saves an average of €500 to €1,500 in installation costs compared to a later retrofit.

Advantages of integration during the construction phase

Integrating a home battery during the construction phase offers advantages that are not achievable with renovation.

• Lower installation costs — no demolition work, direct cable integration
• Optimal consumer unit layout — space for inverter and additional circuits
• Future-proof — ready for heat pump, EV charger and expansions
• Combine with solar panels — install cables directly for optimal synergy
• Subsidy — ISDE and provincial schemes apply

What to consider in your building plan

During construction, install thicker wiring (minimum 6 mm² for the battery circuit) and provide cable ducts for future expansion. This costs little extra during a new build but saves expensive disruption later.

Optimal cable infrastructure

Plan a consumer unit with space for a hybrid inverter, a smart meter and additional circuits. A future-proof consumer unit with a three-phase connection gives you the flexibility for a heat pump, EV charger and home battery simultaneously.

Consumer unit sizing

A home battery has specific requirements: temperature between 0°C and 45°C, dry, ventilated and not in direct sunlight. With a new build, you can reserve an optimal location in the utility room, garage or technical room.

Location selection for the battery

For new build homes, the Anker SOLIX X1 or a Pylontech Force system is the recommended choice. These systems integrate seamlessly with hybrid inverters, support three-phase connections and are modularly expandable as the household grows.

Recommended systems for new build homes

Also consider an all-in-one system where the inverter and battery are combined. This simplifies installation and reduces the number of components in the consumer unit.

ISDE subsidy, 0% VAT on solar panels and home batteries in combination, and provincial sustainability loans are applicable to new build projects. Check with your municipality and province for current schemes, as these change regularly.

Subsidies and financing for new builds

Including a home battery in your new build is a smart long-term investment. The additional costs are limited, the savings are immediately noticeable and you lay the foundation for a home that is ready for 2027 and beyond.

• Minimum 6 mm² cabling for the battery circuit
• Three-phase consumer unit with space for inverter and additional circuits
• Dry, ventilated location between 0°C and 45°C
• Separate cable route from solar panels to inverter

Conclusion

Ask your builder to include the necessary provisions in the building plan. We provide no-obligation advice on the optimal system and required specifications.

Contact our advisers for tailored new build advice.