The Electricity Grid Is Becoming One of the Biggest Obstacles to Building New Homes

The Netherlands has a housing shortage of around 410,000 homes. The government has committed to dramatically accelerating construction, with targets running into the hundreds of thousands of new dwellings over the coming years. But there is a problem that no amount of planning permission or zoning reform can solve on its own: the electricity grid is full.

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What netcongestie is

Netcongestie, or grid congestion, means the electricity network no longer has sufficient spare capacity to connect new users. The problem has been building for years as solar panels, heat pumps, electric vehicles, data centres and industrial electrification all added demand faster than the infrastructure could keep up. The transmission and distribution networks, which were built for a different energy system, are now overloaded across large parts of the country.

Around 14,000 businesses already sit on a waiting list for a grid connection or capacity upgrade. Until recently, housing projects were largely shielded from this problem because grid operators reserved a portion of their available capacity specifically for small consumers, including new residential developments. That protection disappears on 1 July 2026.

The TenneT warning

On 12 February 2026, national grid operator TenneT issued a stark warning: the high-voltage network in the provinces of Flevoland, Gelderland and Utrecht has reached its absolute limit. The region has an ambition to build 240,000 new homes by 2035. TenneT warned that without urgent intervention, a full connection freeze could occur later this year, meaning no new household or development could receive a grid connection at all.

In the province of Utrecht alone, a full connection freeze would mean that 52,500 planned new homes could not be connected to the grid for the foreseeable future. In the city of Utrecht, possibly half of the 23,000 homes planned by 2030 are at risk of not receiving a connection. Developer association Neprom estimated that up to 200,000 homes across the three-province region could be affected.

Utrecht gedeputeerde Huib van Essen called on TenneT and the national government to do everything possible to prevent a connection freeze: "The problems are particularly severe for new building projects planned for the coming years." The provinces of Gelderland and Flevoland said they were "enormously shocked" by TenneT's assessment.

What changes on 1 July

Until now, grid operators were allowed to keep capacity in reserve specifically for small consumers, including housing projects. From 1 July 2026, that reserved capacity disappears. In congestion areas, everyone, large and small, will join the same waiting list for capacity as it becomes available. A new priority framework drawn up by regulator ACM will determine who gets capacity first within that queue. Projects linked to national security, healthcare and drinking water come first, followed by housing. Businesses come last.

Construction sector association Bouwend Nederland called it unacceptable that housing does not receive a higher priority, warning that building sites will stall and the housing shortage will deepen further. The association called for a guaranteed grid connection for energy-efficient new developments as a minimum condition.

The four largest Dutch cities wrote to the minister warning that without clear national direction and guarantees for a careful transition, the construction of more than 160,000 homes and essential facilities including schools and charging infrastructure would be at risk. "The risk of housing construction coming to a halt is enormous," the aldermen wrote. "That risk, including the uncertainty already prevailing now, is not something we can afford."

Building smarter to use less grid

Part of the response is changing how new homes are designed. Three provinces are introducing a binding norm for what they call "netbewust bouwen," or grid-conscious construction.

Flevoland, Gelderland and Utrecht are the first provinces to incorporate a maximum peak load limit for new residential neighbourhoods into their planning rules. Under the norm, all homes in a new development combined must stay below a set threshold of peak electricity demand. Developers must demonstrate compliance when applying for a building permit. Grid operators typically assume a peak load of 4 to 6 kilowatts per home; a well-designed grid-conscious neighbourhood can get this down to around 1 kilowatt per home through better insulation, efficient heating systems and smart energy management.

Building within the norm does not guarantee a grid connection, but it reduces the load that a development places on the infrastructure, making connection more feasible and leaving more capacity available for others.

Why expanding the grid takes so long

The underlying problem, the grid itself, cannot be solved quickly. Building large electricity infrastructure in the Netherlands takes on average eight to twelve years from initial planning to operational connection. A national action plan for accelerating grid expansion is in place, and funding from the Climate Fund has been earmarked, but the timeline remains long. The total investment needed to upgrade the national grid is estimated at 192 billion euros.

For housing projects in congested areas, this means that even well-designed, energy-efficient developments may face years of waiting before they can connect. The promise of hundreds of thousands of new homes by 2030 depends on a piece of infrastructure that will not be ready in time.