Hydro-Quebec Wants Data Centres to Pay 13 Cents a kWh as Power Becomes the Buildout's Bottleneck

Hydro-Québec made its case in a public hearing in Montreal on Thursday morning. It was the opening session of a proceeding that runs until 9 October and resumes in December. The utility wants the Régie de l'énergie to create a new rate class for data centres drawing more than five megawatts. It is not framing the request as a revenue exercise.

"I don't think I will surprise anyone by saying that the context has changed deeply and that the era of energy surpluses is now behind us," said Sarah Trabelsi, the utility's chief of costs and pricing, according to The Globe and Mail.

The numbers behind the ask are the interesting part. Hydro-Québec says data centres covered by the new rate consume 190 MW at peak today and could reach 1,000 MW by 2035. It argues that selling to them at a discount leaves other customers covering the difference, since the utility puts its average cost of energy at around 12 cents per kWh and rising. Trabelsi described the proposal as an effort "to manage and mitigate, or control, the impact on our customer base as a whole." The hearing pits the utility against Google and against environmental groups including Greenpeace and Nature Québec, with the Canadian Federation of Independent Business also participating. Energy analyst Jean-François Blain told the paper that Quebec's low rates create "an exceptional draw" for developers, provided the province can supply them, and that the new rate would bring local pricing closer to other jurisdictions.

Cooling moves to direct current

On the same day, Trane Technologies said it had completed a laboratory demonstration of an 800-volt direct current cooling architecture for AI data centres, built with Eaton and Danfoss. The company reported that a modified high-efficiency chiller running on an 800 VDC feed delivered more than 1,000 tons, or 3.5 MW, of cooling capacity, with the potential for up to a 2% system efficiency gain over conventional AC equipment.

Trane's pitch is arithmetic rather than philosophy. In a 200 MW facility, it says that gain could free up to 1.8 MW for compute, enough for fifteen 120 kW racks or three 600 kW racks. Mauro J. Atalla, the company's chief technology and sustainability officer, said the demonstration was a step toward "rethinking how cooling infrastructure can integrate with emerging DC power architectures." The work is a proof of concept, not a product announcement, and Trane did not give a commercial timeline.

Efficiency claims of one or two percent are easy to dismiss until you multiply them across a gigawatt campus. That is the bet vendors are making: as rack density rises, every conversion stage between the grid and the silicon becomes a line item worth engineering away.

Behind the meter, pollution follows

The harder problem is what happens when the grid cannot deliver at all. Data Center Knowledge reported on 30 September that New Jersey's Department of Environmental Protection fined a Vineland AI data centre operator $1.07 million, saying the facility installed and operated 62 natural gas generators without required permits. A state official announced the enforcement action on 22 September. The operator, identified as DataOne, disputed the finding on the temporary generators but said it would apply for air permits, according to the New Jersey Monitor.

"Taking pressure off the grid doesn't eliminate an environmental cost." - Abhijit Sunil, senior analyst, Forrester

Abhijit Sunil of Forrester told the publication that AI infrastructure "can now be deployed faster than traditional permitting and inspection processes were designed to oversee," and that moving generation behind the meter does not by itself establish an environmental benefit. Luis Fernandes of IDC added that operator surveys rank energy efficiency and renewable energy high among sustainability priorities, while power availability and reliability tend to dominate investment decisions.

Texas offers a live example of the same tension. Inside Climate News reported that administrative law judges at the Public Utilities Commission of Texas recommended approving El Paso Electric's application to build a 366 MW gas facility, built from 813 modular generators supplied by Enchanted Rock, to power Meta's $10 billion, 1-gigawatt data centre only on the condition that the utility does not pass capital and operating costs to ratepayers. Without that condition, the judges recommended denial. The judges found the utility did not adequately consider alternatives and did not issue a request for proposals. The estimated cost of the McCloud facility is $499 million, and the five commissioners have not scheduled a vote.

Missouri is heading the other way. The Sierra Club said Ameren Missouri filed a long-range plan on 28 September that would add 5,400 MW of new gas by 2032, an increase of 1,700 MW, delay two Labadie coal units by six years to 2042 and cut pre-2030 solar investment by 900 MW. The utility removed its carbon reduction goals from the plan's promotional materials.

Demand keeps outrunning disclosure

Europe is trying to measure the problem and largely failing. Lighthouse Reports filed a complaint with the European Commission on 28 September accusing the executive of building a "wall of silence" about data centre energy consumption, Politico reported. Commission figures put Europe's data centres at 20.7 TWh of electricity and more than 8 million cubic metres of water in 2025, up 26% and 52% respectively on 2024, but those totals come from incomplete data and are published only in aggregate under a 2024 law that bars disclosure of individual facility metrics. The Aarhus Convention Compliance Committee meets in November to decide whether the complaint is admissible.

NL Times reported that fewer than a quarter of the Netherland's larger data centres publish electricity or drinking water figures. The Dutch Datacenter Association counted 186 commercial facilities of 500 kW or more at the end of last year; the RVO, which collects data for the EU, has records on only 104 of them, with public electricity figures for 44 and water figures for 47. Statistics Netherlands puts Dutch data centre electricity use at 5.1 billion kWh in 2024, 4.6% of national consumption, and grid operator TenneT projects 10% to 15% by 2030.

The supply side is not standing still. TechCrunch reported that Fervo Energy began selling electricity from its Cape Station enhanced geothermal plant on 30 September, one day ahead of schedule, completing the first block in 23 months and aiming for 18 months on later blocks. Google and Southern California Edison have committed to buy power from the project.

Whether that arrives fast enough is a separate question. Bain and Company estimates the AI industry must generate $6 trillion in annual revenue by 2031 to justify current capital spending, with annual AI infrastructure spending potentially reaching $1.5 trillion. The consultancy says data centre sizes and costs are doubling roughly every 12 to 16 months. That is the demand curve Hydro-Québec is pricing against, and the reason a rate hearing in Montreal is worth watching well beyond Quebec.