Three-Phase vs Single-Phase: Which Home Battery Suits Your Connection?

Your connection determines your choice

Whether you're looking for a plug-and-play system or a complete high-voltage installation — the type of your electrical connection is the starting point. In the Netherlands, approximately 70% of homes have a single-phase connection (25A or 35A). New build homes and larger detached houses increasingly have a three-phase connection (3x25A or 3x35A).

The distinction matters: a three-phase system on a single-phase connection won't work. And a single-phase inverter on a three-phase connection only utilises one third of the grid capacity. In this article, we explain the difference and help you make the right choice.

The difference explained

Single-phase connection

A single-phase connection has one active power conductor (phase) and a neutral conductor. The maximum simultaneous power is limited to 25A × 230V = 5,750 W (or 35A × 230V = 8,050 W). Most homes in the Netherlands fall into this category. Plug-and-play systems always operate on single-phase.

Three-phase connection

A three-phase connection has three active phases and distributes power across three circuits. The maximum power is 3 × 25A × 230V = 17,250 W. This is ideal for households with a heat pump, large EV charger (11-22 kW) or high total consumption. New build homes receive a three-phase connection as standard.

Comparison table: single-phase vs three-phase systems

The overview below helps you quickly determine which type of system suits your connection and situation:

Battery systems by connection type

The choice of battery system is closely linked to your connection type and your inverter. Here are the most popular combinations:

Best choices for single-phase

For a single-phase connection, plug-and-play systems and smaller hybrid inverters are the logical choice. The most requested models are:

• Anker SOLIX Solarbank 2 Pro (4.8 kWh): plug & play, no installer needed, ideal for single-phase
• Anker SOLIX X1 Home Battery (5 kWh): hybrid inverter included, single-phase up to 6 kW
• EcoFlow Power Ocean (5 kWh): modular system, suitable for single-phase hybrid setup

Best choices for three-phase

For a three-phase connection, you need a three-phase hybrid inverter. This distributes power evenly across all three phases, which is essential for a stable system with high simultaneous consumption. Popular options include:

• Huawei SUN2000 + LUNA 2000 (10-15 kWh): the most requested three-phase combination for larger homes
• Anker SOLIX X1 (10-20 kWh, three-phase version): modular, expandable, EPS support
• Dyness Tower T10 (10.24 kWh): compatible with multiple three-phase inverters

How to check your connection type?

Your connection type is listed on your consumer unit report (request via Mijnnetbeheerder.nl) or is visible from the number of phase fuses in your consumer unit. One fuse = single-phase. Three identical fuses behind a main fuse = three-phase. Unsure? A certified installer can determine it in 5 minutes.

Choosing with a future three-phase upgrade in mind

Currently on single-phase but considering a three-phase upgrade in the future (e.g. when purchasing a heat pump or large EV charger)? Then opt for a three-phase compatible battery that also works on single-phase, so you can easily upgrade later without replacing the battery.

Conclusion: seek expert advice

The choice between single-phase and three-phase is decisive for the entire configuration of your home battery system. A wrong choice leads to underutilisation or technical incompatibility. Our advisers assess your consumer unit free of charge and provide tailored advice.

Request a free connection check or browse our range of single-phase and three-phase battery systems.