Grid Investment Meets Its Data Problem: Europe's Data Centres Won't Say What They Consume

The finding comes from Lighthouse Report, working with Trouw and other European media. It spent a year invoking freedom of information laws and got almost nothing back.

In the Netherlands, fewer than a quarter of larger data centres publish electricity and drinking water figures, according to NL Times. The European Energy Efficiency Directive has required sites with at least 500 kilowatts of installed capacity to report energy and water consumption for three years. In practice, few do, and the gap between the obligation on paper and the numbers on file is what the investigation set out to measure. That gap is not a rounding error. It is the difference between a grid plan built on data and one built on assumptions.

The numbers explain why it matters. The Dutch Datacenter Association counted 186 commercial data centres at 500 kW or more at the end of last year. The Netherlands Enterprise Agency, which collects the data for Brussels, has records on 104 of them, and public figures exist for the electricity use of only 44 and the water use of 47. RVO told Trouw it holds more data on some sites but declined to provide figures.

Assets are being built faster than they can be measured

Consumption is not marginal. Statistics Netherlands puts Dutch data centre electricity use at 5.1 billion kilowatt-hours in 2024, or 4.6 percent of national consumption, close to double the level five years earlier. Grid operator TenneT projects 10 to 15 percent by 2030, in a country where businesses, institutions and housing developments already sit on connection waiting lists. RVO data released this summer showed Microsoft's largest Dutch data centre alone accounts for 1 percent of national electricity consumption. Google, which runs two large sites in the Netherlands, does not disclose the figure.

The disclosure failure lands in the same week as a set of investment announcements that assume data centre and industrial demand will keep climbing. On Wednesday, President Donald Trump was expected to unveil roughly $200 billion in South Korean investment in the United States, including about $54 billion tied to the long-delayed Alaska LNG project, Bloomberg reported via Seeking Alpha. Shipbuilding, LNG, gas power and nuclear plants are the named targets, all of them projects that stalled on financing and negotiation rather than engineering.

On the generation side, the International Renewable Energy Agency has said global electricity must reach 35 percent of final energy use by 2035, with grid investment doubling to $1 trillion a year, a figure OilPrice.com revisited on 30 September. That is the scale of the build-out. The measurement side is not keeping pace, and the two are now in open tension.

Transport electrification adds load, unevenly

Vehicle electrification is part of the same load story, and the geography is lopsided. CleanTechnica reported on 30 September that US battery-electric share was 5.9 percent in the first half of 2026, against 45 percent in China in August and 26 percent in Europe in July, and argued the US could finish last among major markets.

In the UK, the new Range Rover Sport Electric carries an 118.5 kWh battery and 800-volt architecture, with 350 kW charging and a 10 to 80 percent session in 22 minutes, according to InsideEVs and WIRED. Toyota, meanwhile, is taking orders in the UK for the Hilux BEV from £42,170 before VAT, with a 59.2 kWh pack and a WLTP range of up to 160 miles, Electrek reported.

Each of those fleets plugs into a network whose capacity is already contested. The Dutch case is the sharpest illustration: the directive exists, the reporting obligation exists, and the data still does not. Note also where sources diverge: InsideEVs puts the Range Rover Sport Electric's WLTP range at 378 miles, while WIRED reports 374 miles.

One further pressure sits on the same wires. Microsoft Research published a machine learning pipeline on 30 September that forecasts geomagnetically induced currents across 66,935 substations in the continental United States, using solar wind data and local ground conductivity, and claims it detected nearly 80 percent of major space weather events in testing with 30 to 60 minutes of warning. It is a reminder that the grid is being asked to absorb more load while its operators still lack basic consumption data from the largest new users.