Summary
- Dominion’s pipeline across several stages of contracting increased by about 11% from the end of 2025.
- The 53.8GW figure is a development pipeline, not the amount of load currently operating.
- Dominion is also examining a recent disturbance in which large data centre loads disconnected during a transmission fault.
Dominion Energy has increased its Virginia data centre pipeline, covering projects at several stages of contracting, to approximately 53.8GW — about 5.3GW more than at the end of 2025.
The 11% increase was reported alongside the utility’s second-quarter results. Dominion had approximately 48.5GW under contract in December and nearly 51GW by the end of March.
The figure does not represent 53.8GW of data centre load operating on the grid. It covers projects at different stages of contracting, development, connection, and construction, some of which may be delivered over many years or altered before energisation.
It nevertheless provides a measure of the requests facing the utility that serves Northern Virginia, the world’s largest data centre market. The pipeline is several times larger than the capacity currently operating in the region.
Large contracted volumes require Dominion to plan substations, transmission corridors, generation, and distribution upgrades before every facility is complete. Equipment procurement and regulatory approvals must begin far enough in advance to match customer delivery dates.
The utility also has to manage the risk that contracted projects are delayed, reduced, or cancelled. Building network infrastructure for demand that does not arrive can leave costs to be recovered from a smaller customer base.
Grid behaviour is becoming part of the connection test
Dominion’s results followed a transmission fault that caused a substantial group of Northern Virginia data centre loads to disconnect from the grid rather than ride through the momentary disturbance.
Data centres transferred to backup arrangements, but the simultaneous loss of a large block of demand created a voltage event for the wider system. Dominion and the PJM Interconnection are examining the incident and potential mitigation.
The event shows that data centres affect grid stability through more than their total electricity consumption. How power electronics, uninterruptible power supplies, protection systems, generators, and transfer controls respond to faults can influence voltage and frequency across the network.
A single facility changing operating mode may be manageable. Hundreds of facilities using similar equipment and settings can produce correlated behaviour, particularly when they react to the same transmission disturbance.
Connection studies will increasingly need to consider those dynamic responses alongside steady-state megawatt demand. Requirements may include ride-through settings, staged transfer, reactive-power capability, telemetry, and coordination between facility controls and grid operators.
The issue is relevant to European networks facing their own large-load queues. Grid assessments have traditionally concentrated on whether enough capacity exists to serve a project at peak demand. The Northern Virginia event indicates that the speed and direction of a load change can be equally important.
Dominion’s pipeline also demonstrates why contracted capacity must be interpreted carefully. A 53.8GW queue is not a forecast that all of that demand will arrive at once, but it establishes the range of scenarios the utility must evaluate.
The capital response is already substantial. Dominion has increased its five-year investment plan as it prepares for data centre growth, grid reinforcement, generation requirements, and other utility projects.
Customers may be required to make stronger financial commitments before infrastructure is built on their behalf. That protects ratepayers but can increase the development capital required long before a data centre begins producing revenue.
The commercial effect extends to site selection. Projects with credible connection agreements and defined reinforcement programmes become more valuable than sites supported only by preliminary utility discussions.
Dominion’s 5.3GW increase indicates that demand for Northern Virginia capacity remains strong despite power constraints and growing political scrutiny. It also raises the threshold for proving which projects are sufficiently mature to deserve a place in the delivery programme.
The utility must now plan for the quantity of load in the pipeline and its behaviour once connected. Data centre growth is becoming a question of system dynamics as well as generation volume.
