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You’re expanding. An extra production line, twenty charge points for the vans, a new cold store. Your installer runs the load calculation and reaches the conclusion you already suspected: this doesn’t fit within your current connection.

So you call the grid operator to ask for a bigger one. And that starts the conversation about lead times, one-off connection costs and your place in the queue.

The question that almost never comes up: do you actually need that extra capacity, or do you have a three-hour peak that could be solved a different way?

TL;DR

Upgrading isn’t wrong. It’s just usually slower and more expensive than the alternative, and nobody runs the numbers on the alternative.

  • A heavier connection raises your standing capacity charge permanently, including the months when the headroom sits unused
  • Across much of the Netherlands there is no transport capacity available, so an upgrade isn’t a short-term option at all
  • An upgrade moves your ceiling; it changes nothing about the behaviour that makes you hit that ceiling
  • On many sites the highest load is a spike lasting a few hours, not a structural demand
  • At the Enexis site in Best, the simulation came out at 45% lower energy costs and 50% lower emissions, with no additional grid capacity

You’re not buying capacity. You’re buying the certainty that your peak never crosses your limit. Control can deliver that too.

Why a bigger contract doesn’t always solve the problem

Three reasons an upgrade is often a detour rather than a fix.

  • 1

    The capacity isn’t there. Across large parts of the network, available transport capacity has already been allocated. Check the Dutch national capacity map for your postcode and the TenneT grid capacity map for the high-voltage picture. If your area shows red, the lead time isn’t measured in months. We covered the hidden cost of waiting for a grid upgrade previously: stranded investment, postponed electrification, diesel assets running years past their planned retirement.

  • 2
    You pay for hours you don’t use. Many commercial sites touch their connection limit for a handful of hours a week. The rest of the time there’s headroom nobody uses, because assets work independently of each other. Solar exports at the moment the chargers are waiting. The battery is empty when the production peak arrives.
  • 3
    You’ll be back here in two years. A bigger connection buys you room, not a change in behaviour. Add a charger or a heat pump and you’re against the limit again, starting the conversation with the grid operator from scratch.

Generated with AI

An upgrade doesn’t always mean the same thing

Before you start calculating, it’s worth knowing precisely what you’re asking for. Your connection has two figures that get conflated: the physical capacity of the cable and transformer, and your contracted transport capacity, the figure you’re billed for.

So an upgrade can be a contract change within physical headroom you already have. That can be quick. Or it means a new cable, a larger transformer, or work in the network upstream. That’s an infrastructure project.

Either way, your capacity charge rises structurally. It’s a fixed amount per kW per year, independent of consumption. So always ask your grid operator which of the two your request is, before you put a lead time in your plan.

When an upgrade genuinely is the right call

Smart control is not a cure-all. There are situations where a bigger connection is the only honest answer:

  • 1
    Your base load is rising structurally. A new hall running around the clock, or an electric furnace drawing continuous power. There’s no trough left to shift your peak into.
  • 2
    The peak is a plateau, not a spike. If your highest load runs for eight hours a day, it isn’t an outlier any more. It’s your new normal.
  • 3
    You have no flexible assets. Without a battery, chargers, refrigeration or a heating installation there is nothing to control. Control only works when something can move.
  • 4
    Your operation tolerates no shifting at all. Some processes are locked to a fixed time and won’t accept a fifteen-minute delay.

Generated with AI

What an upgrade costs you over ten years

Choosing between upgrading and controlling isn’t a matter of principle. It’s arithmetic, and you can do it before committing to anything. Take a site on a 630 kVA connection that wants to move to 1,250 kVA.

Example calculation over ten years
Upgrading the connection
Smart control
Connection value
From 630 to 1,250 kVA
Stays at 630 kVA
Additional contracted capacity
Roughly 590 kW
None
Capacity tariff
€45 per kW per year
Unchanged
Cost per year
Around €26,500 extra, whether you use the headroom or not
Annual subscription, no increase in your network tariff
Over ten years
€265,000 in capacity charges
Subscription cost over the same period
One-off costs
Connection charges that reach six figures once physical work is involved
No network investment
Lead time
Indicatively months to several years, depending on congestion
No queue at the grid operator
What you get for it
A higher ceiling
A peak that stays under your existing limit
Indicative example figures. Tariffs differ by grid operator and voltage level.

Now put last year’s quarter-hourly meter data next to that. You already have it, through your metering company. Don’t look at average load, look at the distribution: how many hours a year do you sit above 80% of your connection value? On many sites the answer is surprisingly low, which means that €400,000 is buying you a few hundred hours a year.

Can you shift those hours?

That comes down to three things. First, whether your peak is short and predictable, such as a charging window between six and nine in the morning or a Monday start-up surge. Second, whether there’s anything to coordinate: once you have more than two assets on one connection, coordination starts paying for itself through load balancing and peak shaving. Third, what your operation allows. Which assets can run half an hour later, which an hour earlier, which not at all? That conversation belongs with your own team, not your energy consultant. Control of HVAC or heat pumps is an option you agree explicitly with the building manager, never a default.

And if you’re in a congestion area, there’s an upside as well: through congestion management, your flexibility can become revenue rather than cost.

Both scenarios can be modelled in an energy simulation on your own data: we run the control schedule against your actual consumption from last year and you see whether you stay inside your current limit. The outputs are indicative estimates based on historical data rather than a guarantee, but they’re considerably firmer than an assumption.

What that looks like in practice

At grid operator Enexis in Best, this was exactly the question on the table. At the Enexis site in Best, the simulation came out at 45% lower energy costs and 50% lower emissions, with no additional grid capacity. That doesn’t come from nowhere: Tibo EMS looks 48 hours ahead at price, weather and consumption and recalculates the control schedule for every asset every five minutes. You set the limit; the system stays under it.

If your connection is already full, as it is at many distribution centres, that’s often the difference between waiting years and getting on with it next quarter.

Want to know how much headroom sits in your connection? We’ll run the numbers on your own quarter-hourly data and show you which scenario comes out cheaper.

Frequently asked questions

It varies considerably by location. In areas without congestion, a contract increase can be arranged within a few months. If physical work is needed, or you’re in a congestion area, lead times run into several years. The Dutch national capacity map gives a first indication for your postcode.

Yes, and it’s often the smartest route. Your application with the grid operator carries on while control lets you expand inside your existing limit. If the upgrade turns out to be unnecessary, you withdraw the application. If it turns out you do need it, at least you haven’t stood still in the meantime.

An upgrade means requesting more capacity for your own connection. Under a shared capacity contract, several parties divide the available capacity on a site between them. That complements control rather than replacing it: without an EMS, the agreement on how to divide capacity isn’t enforceable.

Your grid operator bills the overrun and can revise your contract value if it repeats. In the worst case, protection trips. An EMS prevents overruns by actively holding total load below your limit.

Not necessarily. Chargers, refrigeration and climate installations are flexible too and deliver savings without a battery. A battery widens the room to manoeuvre, but it isn’t a precondition for starting.

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