Netcongestie: How Grid Congestion Is Reshaping Commercial Solar in the Netherlands
In the Netherlands, the constraint on commercial solar is no longer the panel, the roof, or the permit. It is the wire. Netcongestie — grid congestion — has become the defining problem of the Dutch energy transition, and for a business planning a new site, a warehouse expansion, or an electrified fleet, it is now the first question to ask, not the last.
The scale of the queue
The numbers are stark. Roughly 15,000 businesses are currently on connection waitlists across the country, waiting either to draw more power or to feed electricity back. Typical waits have stretched to around 45 weeks, and in the most congested regions the practical answer for a larger connection is "not in this decade." This is not a temporary backlog that clears next quarter; it is the structural result of electrification and solar growth outrunning the pace at which the physical network can be reinforced.
The threshold that used to protect smaller companies is closing too. From 1 July 2026, congestion management extends further down the scale, meaning that even small and medium-sized enterprises — previously waved through on modest connections — can now find themselves queued. The comfortable assumption that "we're too small to be affected" no longer holds.
Why more copper isn't the near-term answer
The intuitive fix is to build more grid. Network operators are doing exactly that, at record spend, but transformer stations, cabling, and substations have multi-year lead times and their own permitting and workforce constraints. No commercial project can sensibly wait on a reinforcement that is scheduled for the 2030s. The realistic strategy is to design around the constraint rather than through it.
Behind the meter beats the queue
The escape route is conceptually simple: use the electricity where you generate it, and stop asking the public grid to move it for you. A commercial solar array sized to on-site load, paired with battery storage, shifts the problem from a scarce network resource to an asset entirely within your own fence line.
Concretely, that means:
- Self-consumption first. A rooftop or solar carport array sized to what the building and its equipment actually draw during daylight avoids the need for a larger feed-in connection altogether. If most of what you generate never touches the public grid, congestion is not your problem.
- Storage to move the peaks. A battery lets you soak up midday generation and release it into evening operations, EV charging, or morning start-up loads. It flattens your demand profile, which reduces the size of the connection you need in the first place — and can keep an expansion inside your existing connection capacity instead of triggering a new application.
- Peak shaving on the draw side. The same battery that stores solar can cap the site's grid draw, so an electrified process or a bank of fast chargers doesn't push you over your contracted limit and into the queue.
This is why, in the Dutch market specifically, we treat energy storage not as an add-on to a solar project but as the mechanism that makes the project connectable at all.
The honest limits
Behind-the-meter design is not a universal solvent. A site whose consumption profile is badly mismatched to its solar profile — heavy night-time load, little daytime draw — needs more storage to reach the same independence, and the economics have to be checked case by case. And a business that genuinely needs to export large surpluses will still meet the feed-in queue; storage narrows that need but does not always eliminate it. The point is not that congestion disappears, but that a well-sized self-consumption system removes your dependence on the part of the grid that is actually scarce.
What to do now
The practical move for a Dutch facilities or energy manager is to stop treating the grid connection as a given and start treating it as the binding constraint. Before committing to an expansion or an electrification plan, model the site's real load curve, size solar and storage to serve it directly, and only then quantify what — if anything — you still need from the network.
Done in that order, congestion stops being a reason to wait and becomes a reason to build behind the meter now. If you want a grounded assessment for a specific Dutch site — connection status, load profile, and the storage sizing that keeps you out of the queue — that is exactly the analysis our team runs before recommending any hardware.