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⚡ The complete step-by-step guide

From single phase to 3-phase, step by step

Need more power for an EV charger, heat pump or induction? This is the complete route to a 3-phase connection — including costs, waiting times and what you can arrange yourself. Calmly explained, no sales talk.

Good news: you may already have 3 phases

Many homes — especially those built after 1990 — already have a 3-phase connection up to the meter cupboard. Check your (smart) meter: does it say '3×25'? Or do five thick wires enter the main switch? Then the grid operator does not need to visit: no application, no waiting list, no upgrade costs. Only the fuse box needs to be made suitable — purely installation work, usually scheduled within two weeks.

The 4 steps to 3-phase

This is how the switch works if your connection does need upgrading.

  1. 1

    Check whether you already have 3 phases

    Look at your meter (does it say '3×25'?) or count the thick wires at the main switch: five wires means 3 phases, three wires means single phase. If you already have 3 phases, you can skip the grid operator steps entirely — only installation work is needed. Not sure? Send us a photo of your meter cupboard and we'll check for free.

  2. 2

    Apply for the upgrade via mijnaansluiting.nl

    The application goes through mijnaansluiting.nl, the joint portal of all Dutch grid operators. Applying is free — you only pay once the upgrade is actually carried out. We help with the application free of charge, so everything is right the first time.

  3. 3

    Have the meter cupboard and fuse box prepared first

    Before the grid operator visits, your meter cupboard must meet the requirements (NEN 2768: dimensions, layout and ventilation) and a 3-phase fuse box must be in place, installed according to NEN 1010. If that's not in order, the grid operator's engineer leaves without doing the job — and the waiting starts again. We make sure everything is ready.

  4. 4

    The grid operator swaps the fuse and meter

    The grid operator's engineer replaces the main fuse (to 3×25A) and, where needed, the meter. That takes a few hours. After that you have 3-phase power — and our team measures everything through once more, so you know it's right.

What does the grid operator charge?

One-off costs for upgrading to 3×25A (2026 rates). You pay these directly to your grid operator — we earn nothing on them.

Grid operatorUpgrade to 3×25A (one-off)
Liander€ 368.77
Enexis€ 275.15
Stedin€ 258.95

Live in the area of a regional grid operator (such as Coteq or Rendo)? Similar rates apply. We'll find out which grid operator serves your address.

And the yearly costs? Nothing to worry about.

A common concern: 'won't my monthly costs go up a lot?' No — as long as you go to 3×25A, which is more than enough for virtually every home.

3×25A — the standard choice

± € 346 per year

Virtually the same as a standard 1×35A connection (Liander rate). Your fixed grid costs barely change.

3×35A — rarely needed

± € 1,459 per year

Considerably more expensive, and virtually never needed for homes. We only recommend this for exceptionally high usage — and we'll say so honestly if that's not you.

The waiting list since 1 July 2026 — calmly explained

The power grid is full in many places. That's why a national prioritisation scheme from regulator ACM applies since 1 July 2026: in areas with grid congestion, applications for a heavier connection go onto a waiting list, where public services such as schools and hospitals may get priority.

What does that mean for you? Applications submitted before 1 July 2026 are still handled under the old rules until 1 January 2027. For new applications the waiting time depends on your region — for reference: in 2025 an upgrade took about 21 weeks on average.

Our advice: no panic, but do prepare. Make sure the application is correct the first time and the meter cupboard is in order before the grid operator visits — then you won't lose time anywhere. And once more: if your home already has 3 phases inside, there's no waiting list at all.

Frequently asked questions

Ready to switch to 3-phase?

Request a free price estimate. We'll check for free whether you already have 3 phases, and within 1 business day you'll know where you stand — no obligations.

Start the free price check

No obligations. No pushy sales calls.