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Grid contract checklist: are you paying for the right subscription?

Main fuse, subscribed capacity and tariff are often decided once and then forgotten. How to check your grid contract step by step, and what applies after the halt to capacity charges.

16 October 20267 min readBy Oliwer Brewitz

Why the grid contract gets forgotten

The electricity supply contract is renegotiated at regular intervals. You cannot switch supplier for the grid contract, so it often carries on unchanged for many years. The main fuse, subscribed capacity and tariff were decided when the premises were built or taken over, and since then the business may have changed equipment, expanded or started charging vehicles.

You cannot choose your network operator, but you can almost always influence which subscription and which tariff you have. That is where the money is.

Fuse-based or capacity subscription?

The first thing you need to know is what type of subscription you have.

  • Fuse-based subscription (säkringsabonnemang, 16–63 A). The fixed fee is determined by the size of the main fuse. Some network operators also charge a capacity charge (effektavgift, a fee based on your highest power demand) on top.
  • Capacity subscription (effektabonnemang, above 63 A). You pay for a subscribed capacity in kW, usually in kr per kW per year, plus a transmission fee per kWh. This applies to both low voltage (0.4 kV) and high voltage.

In March 2026 the Swedish government halted the requirement for all network companies to introduce a capacity charge by 2027. This has led many to believe that capacity charges have disappeared. In practice, however, the halt applies to fuse-based customers. Several network companies have removed or paused the capacity charge for 16–63 A during 2026, while others have kept it. Paused is not the same as removed.

If your main fuse is above 63 A, you are not affected at all. The capacity subscription remains exactly as before. Read more: Capacity charges for businesses.

Checklist for the grid contract

  1. Subscription type. Does the invoice show a main fuse in amperes or a subscribed capacity in kW? That determines which of the points below apply to you.
  2. Size of the main fuse. A 63 A fuse can theoretically handle about 44 kW, 50 A about 35 kW, 35 A about 24 kW and 25 A about 17 kW. Compare with your highest measured power. If the peak is well below, you can go down a step, but have an electrician assess starting currents and how the load is distributed across the phases first.
  3. Subscribed capacity. Compare the subscribed capacity with the highest hourly average power each month over the past year. If the subscription is too high, you are paying for capacity you do not use. If it is too low, you pay for excess usage, which often costs twice as much per kW.
  4. Terms for changes. Subscribed capacity can usually only be changed with notice and a limited number of times per year, for example once per calendar year with one month's notice. Find out what applies with your network operator before you plan.
  5. Choice of tariff. Many network operators have several tariffs, for example with a higher transmission fee during peak-load hours (often weekday daytime in winter, such as November–March 06–22). Whether the tariff pays off depends on how much of your consumption falls in those hours. Ask the network operator for a comparison based on your own meter data.
  6. Metering points. Each site has its own fixed fee. Check that all metering points are in use and that none can be merged or cancelled.
  7. Reactive power. Many network operators charge when reactive power exceeds a certain share of the subscribed active power, for example 50 per cent. The item is often shown as kVAr or reactive power. Motors, compressors and some drives are common causes. Read more: What is reactive power?.
  8. Timing of the peak. Find out when your highest hour occurs and what is running then. Often a few loads coincide that can be moved. Read more: Power peaks: how to lower your grid fee.

Red flags on the invoice

  • A main fuse or subscribed capacity that has not changed since you moved in
  • Excess usage several months in a row
  • Lines for reactive power that nobody can explain
  • Metering points with almost no consumption
  • A tariff chosen long ago and never compared with the alternatives

How to do it yourselves

  1. Log in to the network operator's portal and download hourly meter data for the past twelve months.
  2. Find the highest hour per month and compare it with the main fuse or subscribed capacity.
  3. Calculate how much of your consumption falls in the network operator's peak-load hours, if the tariff has them.
  4. Read the network operator's price list and terms for changing your subscription.
  5. Ask the network operator in writing for a comparison of the tariffs you can choose between.

Tip: Never lower the main fuse or the subscribed capacity based on annual consumption alone. It is the highest hour, and for the fuse also the short starting currents, that determines what you need.

How it looks in different industries

The checklist is the same for everyone, but where the money is depends on when and how the business draws power. Choose your industry for a worked example. The capacity prices are assumed, as they vary widely between network operators.

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