If a network operator refuses your grid connection in the Netherlands, the refusal has to be justified and you can have it tested. Under the Energiewet, in force since 1 January 2026, a network operator has a statutory duty to connect anyone who asks within its area and a separate duty to transport electricity, and it may only depart from either on the grounds the law allows. In practice the two are regularly confused: congestion is a ground to refuse or limit transport, not usually a ground to refuse the physical connection. The route to challenge a refusal runs first through a written complaint to the operator, then to the Authority for Consumers and Markets (ACM) under article 5.4 of the Energiewet, which decides within two months, and from there by appeal to the Trade and Industry Appeals Tribunal or by civil proceedings for performance and damages.
This article sets out the legal framework as it now stands, what a refusal may and may not be based on, which connection periods apply and where they are laid down, how congestion management works, and what to do in the weeks after a refusal arrives. It is written for businesses and project developers, but the connection duty applies to households as well.
The legal framework after the Energiewet
The Energiewet entered into force on 1 January 2026 and replaced the Elektriciteitswet 1998 and the Gaswet, both of which were repealed on that date. It implements the European electricity market rules and restates the two core duties of a network operator: to provide a connection to anyone who requests one within its area, and to transport electricity for connected parties. Neither duty is absolute, but a departure from either has to be based on a ground the legislation or the codes allow, has to be reasoned, and is reviewable.
Below the Act sit the technical codes, and this is where the practical rules live. Since the Energiewet took effect there are three electricity codes: the Begrippencode, the Systeemcode and the Tarievencode elektriciteit 2026. The Netcode elektriciteit, which older articles and even some correspondence from operators still refer to, has been absorbed into the Systeemcode; it is no longer a code in force in its own right. If a refusal letter cites the Netcode, that in itself does not make the decision wrong, but it is a reason to check whether the operator is applying the current text. The rules on congestion management are in Chapter 9 of the Systeemcode, articles 9.13 to 9.30, and the provision that used to be article 3.1.1a of the Netcode is now article 7.1, paragraph 2, of the Systeemcode.
The ACM sets these codes and supervises compliance with them. That matters for the connection period, because the ACM rather than the legislature now fixes it. Above the national level, the EU electricity directive and regulation shape both the connection duty and the ACM’s exclusive competence to set connection terms. Our overview of Dutch energy law and our index of energy law guides place these instruments in context.
How long may a connection take
This is the point on which the position has changed most, and where older guidance is now actively misleading. The Elektriciteitswet 1998 contained a statutory period of eighteen weeks for realising a connection. That statutory period was removed with effect from 22 February 2025, on the reasoning that under the European electricity directive it is the national regulatory authority, the ACM, that has exclusive competence to set connection periods, and that a term in the Act alongside the ACM’s own rules created legal uncertainty. Claims built on the assumption that eighteen weeks is a statutory deadline for every connection, and that damages follow automatically once it passes, no longer hold. The Court of Appeal of Arnhem-Leeuwarden confirmed that reading in late 2025, and accepted in the case before it that a period of thirty-nine weeks for a large connection was not unreasonable given the network expansion required.
What applies instead are the periods in the code, and they differ by the size of the connection. For small connections, meaning up to and including 3 x 80 A at low voltage, the ACM has set a maximum of eighteen weeks for a new connection and twelve weeks for a modification of an existing one, for example for a heat pump or a solar installation, with a longer maximum of up to a year where the area is designated as congested. For large connections the ACM took a separate decision in March 2024 that works with categories of complexity: broadly, twenty-six weeks for straightforward work, fifty-two weeks for moderately complex work and a bespoke period determined by the operator for highly complex work, with an additional allowance for regional workload that is capped and reduces over a ten-year period. In a congestion area the operator need only realise the connection some months after the congestion has been resolved, and the periods can be extended for force majeure or by agreement with the customer.
Two practical consequences follow. First, check which category your connection falls into and which version of the code applied when your request was made, because that determines what you can hold the operator to. Second, a period that has been exceeded is a breach of the code and a basis for a complaint and, where loss follows, for a claim, but it is not a mechanical entitlement to damages: you have to show the loss and the causal link, and the operator will point to the exceptions.
Connection is not the same as transport
The most common misunderstanding in refusal correspondence is the conflation of two separate duties. The connection duty concerns the physical link between your installation and the network. The transport duty concerns the right to actually move electricity over that network, in the volume you need, at the times you need it. They are governed separately, they are refused for different reasons, and they have different remedies.
Grid congestion is a transport problem. Where there is no transport capacity in an area, the operator can refuse or restrict a transport request, but it does not automatically follow that it may refuse to install the connection itself. Businesses that accept a blanket refusal because the letter says the grid is full frequently give up a connection they were entitled to have realised, and with it their place in the queue. Read the letter carefully and, if it is not clear, ask the operator in writing to state separately whether the connection is refused, whether transport is refused, and on which ground each decision rests.
The distinction also determines what to negotiate. Where transport is the constraint, the answer is usually a form of flexible contracting rather than litigation, and those instruments are discussed below. Where the connection itself is delayed beyond the code period without a valid exception, the answer is a complaint and, if necessary, proceedings for performance.
When a refusal is lawful
A network operator may not refuse arbitrarily, and it may not refuse on grounds of commercial preference or because it considers your project less attractive than another. What it may rely on is limited, and each ground has to be substantiated in the decision.
The first ground is a lack of available transport capacity, that is, congestion. This is the dominant reason in practice, and it is subject to conditions: the operator must have carried out a congestion study for the area, must publish the outcome, must show that congestion management is not capable of freeing sufficient capacity, and must offer what alternatives it can. A refusal that simply asserts that the region is congested, without reference to a study, is vulnerable.
The second is technical impossibility or a safety objection: the installation does not meet the technical requirements in the codes, or connecting it as proposed would endanger people, property or the stability of the network. Here the operator has to identify the specific requirement that is not met and explain why an alternative is not workable.
The third is a deficiency in the request itself. An application that lacks the technical specifications, the expected load or generation profile, the location details or the required permits can be refused or, more usually, suspended until it is complete. This is the ground most within your control, and a complete first submission avoids losing the queue position that a resubmission may cost you.
What is generally not a lawful ground is a bare refusal to invest. The operator has a duty to develop the network to meet reasonable demand, and the fact that a connection requires reinforcement is a matter of cost allocation and timing rather than a reason to say no. Nor may the operator discriminate between comparable applicants, or treat one technology more favourably than another outside the prioritisation rules the ACM has set. A refusal that turns out to rest on capacity the operator has reserved informally for another party is precisely the kind of decision the dispute procedure exists to correct.
Congestion, priority and the instruments that create room
Congestion arises where the demand for transport in an area exceeds what the network can carry. It is the consequence of two developments running at the same time: local generation from solar and wind feeding into networks that were designed for one-way flows, and the electrification of heating, transport and industrial processes. Network reinforcement is under way, but permits, materials and technical staff constrain the pace, so the legal instruments that allocate scarce capacity have become as important as the physical build-out.
Before an operator may refuse transport, it must carry out a congestion study under Chapter 9 of the Systeemcode and examine whether congestion management can free capacity. Congestion management pays connected parties to reduce or shift consumption or feed-in at the times the network is under strain, and it has to be applied where it is technically and economically feasible. The study, and the decision on whether congestion management is possible, are published, which means you can read the operator’s own reasoning before you challenge it.
Where capacity is genuinely scarce, first come first served is no longer the only rule. The ACM has established a prioritisation framework that allows operators to depart from the queue in defined cases: for parties that relieve congestion, and for parties with a societal function such as emergency services, healthcare and education. Priority has to be applied transparently and on the published criteria; a request for priority is worth making where your project genuinely fits, and a competitor’s unexplained advance up the queue is worth questioning.
Several contractual instruments create room within the existing network, and an operator that refuses firm transport should offer them. A capacity restriction contract pays you to reduce your offtake or feed-in at defined moments in exchange for a fee. A non-firm connection and transport agreement gives you capacity that can be curtailed when the network is under strain, in exchange for faster access and a lower tariff. A group transport agreement allocates capacity to a group of connected parties, who divide it among themselves and flatten their combined peak. Time-bound contracts limit your transport rights to specified hours. Each of these changes your operational risk profile, and each needs to be checked against your own supply and offtake arrangements before it is signed; the interaction with a power purchase agreement and with your business energy contracts is where the commercial risk usually sits.
Two technical routes also deserve consideration. Battery and other energy storage can turn a project that cannot be connected firmly into one that can, because a storage asset that reduces the peak is treated as relieving congestion rather than adding to it. And where several users share a site, a closed distribution system under the Energiewet can be an alternative to individual connections, subject to the statutory conditions; we set those out in our article on the closed distribution system under the Energy Act. The wider picture, including the position of producers, is set out in our guide to grid congestion management and the remedies available to Dutch energy producers.
What to do in the first weeks after a refusal
The steps that matter are unglamorous and they have to be taken in order.
Get the decision in writing, with the date, and ask the operator to state which duty it is refusing, on which ground, and with reference to the provision of the Energiewet or the code it relies on. Ask at the same time for the underlying material: the congestion study for the area, the capacity assessment for your connection point, and the alternatives considered. You are entitled to a reasoned decision, and a request for the reasoning is also the moment at which weak reasoning tends to be improved or withdrawn.
Preserve your queue position. Do not withdraw the application, and do not resubmit it in an amended form without first asking what that does to the date of your request. Where the objection is to the size or the profile of your request rather than to the connection as such, ask whether a reduced or phased capacity can be accepted while the original request stands.
Then put a formal written complaint to the operator. This is a required step before the ACM will take a dispute, and it should set out the facts, the ground relied on, why you consider it insufficient, and a reasonable period for a response, four weeks being usual. Keep the file complete as you go: the application and its annexes, all correspondence, notes of telephone conversations confirmed in writing, the offer if one was made, and the evidence of what the delay is costing you. Confirm every material oral statement by email the same day.
In parallel, look at the commercial exposure. Check what your construction contracts, lease, subsidy conditions and offtake agreements say about a delayed connection, and whether the deadlines in them can be moved before they are missed. Building realistic connection assumptions and delay provisions into contracts at the outset is far cheaper than renegotiating under pressure, a point we develop in our notes on protecting your Dutch deals by contract and on navigating Dutch contract law.
Bringing the dispute to the ACM
If the complaint does not resolve matters, the Energiewet gives you a dedicated route. Under article 5.4 a connected party or an applicant can put the dispute to the ACM, which decides within two months of the complaint, a period it may extend by a further two months where it needs more information. The ACM examines whether the operator complied with its statutory and code obligations, and its decision binds the operator; failure to comply can be enforced and the ACM can impose sanctions.
Two points about the procedure repay attention. It is designed for disputes about the performance of the statutory duties, not for every commercial disagreement: a complaint framed as a grievance about service will get less traction than one that identifies the specific provision the operator has not complied with. And the decision is an administrative decision, so the ordinary administrative routes follow it. An objection can be lodged with the ACM and an appeal against its decision lies with the Trade and Industry Appeals Tribunal (College van Beroep voor het bedrijfsleven), which has developed most of the case law in this field; the general rules on appealing a decision apply.
Two lighter alternatives exist. Consumers can take a dispute with a network operator to the Geschillencommissie Energie, and businesses to the Geschillencommissie Energie Zakelijk, which is quicker and cheaper than the ACM route and often sufficient where the dispute is about the handling of a request rather than about the interpretation of the code. And mediation remains available where the relationship has to continue for years, as it usually does with a network operator; our page on business dispute resolution compares the routes.
Civil proceedings and damages
The regulatory route and the civil route are not alternatives; they answer different questions. The ACM decides whether the operator complied with its obligations. The civil court can order the operator to perform and can award damages for the loss caused by a failure to perform, and it is the only route to money.
Where the connection or the transport is urgent, summary proceedings before the preliminary relief judge can produce an order within weeks. The claim is for performance, and the test is whether the operator is failing to comply with a duty that is sufficiently clear; a claim built on an exceeded code period, an absent congestion study or an unequal treatment argument is considerably stronger than one built on frustration with the wait.
A damages claim requires more. You have to establish the breach, the loss and the causal link between them, and you have to deal with the exceptions the operator will invoke. Recoverable heads of loss typically include lost revenue for the period of the delay, the additional cost of a temporary solution such as generators or storage, subsidy that lapsed because a milestone was missed, and the extra financing cost of a postponed project; a subsidy deadline that has passed is often the largest single item, so check the conditions of any award early. Contemporaneous evidence is what decides these claims: a project plan with dated milestones, the correspondence showing when the operator knew what, and an accountant’s calculation of the loss rather than a projection. Our page on Dutch litigation sets out how such a claim proceeds, and an energy lawyer can assess at an early stage whether the refusal is vulnerable enough to be worth the proceedings.
Reducing the risk before you apply
Most connection problems are decided before the application is submitted. Ask the operator for the available capacity at the intended connection point before the site is bought or the lease is signed, and treat the answer as a condition of the transaction rather than as background information. The capacity maps published by the operators show which areas are congested for offtake, for feed-in or for both, and a site in an unconstrained area is worth a premium.
Apply as early as the project allows, because the date of a complete request usually determines the queue position, and submit the request complete: load and generation profiles, equipment specifications, the phasing of the capacity you need, and the permits you already hold. Consider whether you actually need firm capacity for the full volume from day one, or whether a phased request, a non-firm arrangement or storage would let the project start earlier. Build the connection assumptions into the project schedule and into the contracts, with provisions that deal with a delayed connection rather than assuming one. For generation projects, check how the connection risk interacts with the subsidy conditions and with the offtake arrangements, as we discuss in our articles on solar energy projects and on the wider legal considerations in energy projects. Where the project also requires planning consent or an environmental permit, run those procedures in parallel rather than in sequence; our overview of environmental law covers the permitting side of the energy transition.
Finally, keep the relationship workable. The operator is a monopolist you will deal with for the life of the installation, and most matters are resolved faster by a well-documented complaint than by an immediate summons. That is a reason to be precise, not a reason to be passive: the duties in the Energiewet and the codes are real, and they are enforced when someone insists on them.
Law and More advises businesses, developers and housing organisations on grid connection and transport refusals: assessing whether a refusal is lawful, framing the complaint, conducting dispute proceedings before the ACM and appeals to the Trade and Industry Appeals Tribunal, negotiating non-firm and capacity restriction arrangements, and claiming damages where a delay has caused loss. If your connection or transport request has been refused or is overdue, contact our office with the decision and the correspondence.
Frequently asked questions
When a network operator refuses your grid connection request in the Netherlands, you need to understand your legal rights and the steps available to challenge that decision. The Dutch regulatory framework provides specific procedures for disputes, appeals, and enforcement actions.
What legal steps can I take if a network operator refuses my grid connection in the Netherlands?
You must first submit a written complaint to the network operator. Set out why you consider the refusal unjustified and allow a reasonable period, four weeks being usual, for a reply.
You need to clearly state why you believe the refusal is unjustified and provide supporting evidence. If the network operator maintains its refusal after your objection, you can escalate the matter to the Netherlands Authority for Consumers and Markets (ACM).
The ACM oversees network operators and ensures they comply with connection obligations. You can submit a complaint through their official channels, including their website or by post.
You also have the right to pursue legal action through the civil courts. This option is typically used when other dispute resolution methods fail.
The court can order the network operator to provide connection if it finds the refusal unlawful. Consider seeking advice from a lawyer who specialises in energy law.
They can assess your specific situation and recommend the most effective approach based on your circumstances.
Under what circumstances can a Dutch network operator lawfully deny grid connection?
Network operators can refuse connection when there is insufficient capacity on the grid to accommodate your request. This situation often arises in areas with high demand or limited infrastructure.
The operator must demonstrate that capacity constraints are genuine and not simply administrative barriers. Technical impossibility provides another lawful basis for refusal.
If connecting your facility would compromise grid stability or violate technical standards, the operator can deny your request. However, they must explain the specific technical issues and explore alternative solutions before refusing.
Safety concerns represent a valid reason for denial. When your proposed connection would create hazards to people, property, or the existing grid infrastructure, the operator has grounds to refuse.
These safety issues must be based on recognised standards and regulations. The operator can also refuse if you fail to meet legal or regulatory requirements.
This includes lacking proper permits, failing to provide required documentation, or not complying with technical specifications. You must fulfil all prerequisites before the operator is obligated to connect you.
How does the Dutch dispute resolution process work for contentious grid connection issues?
The process begins with direct negotiation between you and the network operator. You should document all communications and attempts to resolve the issue.
This documentation becomes important evidence if the dispute escalates. If direct negotiation fails, you can request mediation through the ACM or an independent mediator.
Mediation provides a structured environment where both parties can discuss the issues with a neutral third party. This approach often resolves disputes faster than formal proceedings.
The ACM can investigate complaints and issue binding decisions when network operators violate regulations. They examine whether the operator followed proper procedures and applied connection rules correctly.
Under article 5.4 of the Energiewet the ACM decides within two months of the complaint, a period it may extend by a further two months where it needs more information. As a final resort, you can file a claim in the district court.
The court will review all evidence, hear arguments from both sides, and issue a legally binding judgement. Court proceedings can take one to two years, though urgent matters may receive expedited treatment.
Are there any government bodies or regulators in the Netherlands that can intervene in grid connection disputes?
The ACM serves as the primary regulatory body for energy network disputes in the Netherlands. They have authority to investigate complaints, enforce regulations, and impose penalties on network operators who breach their obligations.
You can contact them directly through their consumer helpline or online portal. The ministry responsible for energy sets overall energy policy and oversees the regulatory framework.
While they don’t handle individual disputes, they can address systemic issues affecting multiple consumers. They also propose legislative changes when needed to improve grid access.
Provincial governments may have jurisdiction over certain aspects of grid infrastructure, particularly regarding permits and land use. They can intervene when disputes involve planning permissions or regional energy policies.
Your provincial authority can provide guidance on local requirements. The ACM also acts as the national consumer authority and handles broader consumer protection issues that may overlap with grid connection disputes.
They can assist if you believe the network operator has engaged in unfair business practices or violated consumer rights.
What are the potential consequences for a network operator unjustifiably denying grid connection in the Netherlands?
The ACM can impose administrative fines on network operators who unlawfully refuse connections. These fines can reach substantial amounts depending on the severity and duration of the violation.
Repeated violations result in higher penalties. Courts can order the network operator to provide connection within a specified timeframe.
This court order is legally enforceable, and failure to comply can result in additional penalties. The court may also award you compensation for damages caused by the wrongful refusal.
You may claim financial compensation for losses resulting from the unjustified refusal. This includes lost revenue, additional costs incurred, and other demonstrable damages.
You must provide evidence linking these losses directly to the refusal. The operator’s reputation may suffer damage through public reporting of regulatory enforcement actions.
The ACM publishes decisions and penalties on its website. This transparency helps deter future violations and informs other potential connection applicants.
What documentation is required when appealing a grid connection refusal by a network operator in the Netherlands?
You need the original refusal letter from the network operator. This document should state the reasons for denial and the date of the decision.
Keep both paper and digital copies for your records. Gather all correspondence between you and the network operator regarding your connection request.
This includes emails, letters, meeting notes, and phone call records. These documents establish a timeline and show your efforts to resolve the issue.
Provide technical documentation about your proposed connection. This includes equipment specifications, capacity requirements, and any technical assessments you’ve obtained.
Professional reports from qualified engineers strengthen your appeal. Submit copies of all relevant permits, licences, and approvals you have obtained.
This demonstrates your compliance with legal requirements. Include planning permissions, environmental permits, and business registrations as applicable.
Prepare evidence of any financial losses or damages caused by the refusal. This can include contracts with customers, revenue projections, and additional costs incurred.
Bank statements and invoices provide concrete proof of financial impact. Include any independent expert opinions or reports supporting your position.
These might address technical feasibility, safety standards, or regulatory compliance. Expert testimony carries significant weight in dispute resolution proceedings.
Looking for something else? Our index of Dutch energy law guides lists everything we have written on this subject, ordered by topic.
