National Grid Invests $1.75 Billion in AI Data Centre Power Firm Joulent

What National Grid's $1.75 Billion Joulent Deal Involves

National Grid Ventures, the unregulated growth arm of National Grid, has agreed to invest $1.75 billion for a 35 percent equity stake in Joulent, a US energy developer that builds power plants designed specifically to serve large scale AI data centres. Joulent only emerged from stealth last month, spun out of investment firm Engine No. 1. Its flagship project, a 2.67 gigawatt gas fired facility in West Texas built as a joint venture with Chevron, is designed to sit next to a data centre rather than draw power through the wider public grid.

This is a venture investment, not a takeover. National Grid becomes a minority shareholder while Joulent continues to operate independently. The deal gives National Grid a foothold in one of the fastest growing corners of the US power market, sometimes called behind the meter generation, where a plant is built right beside the customer it serves instead of connecting through a congested transmission network.

Why the AI Power Bet Matters for National Grid

AI data centres need enormous, always on electricity supply, but connecting new generation to the grid in the US can take years because of long interconnection queues. Joulent's model gets around that queue by building generation directly beside the data centre it powers. For National Grid, whose core business is regulated transmission and distribution networks in the UK and the US, this is a way to capture growth from the AI boom without waiting on regulators to approve new grid capacity first.

Joulent's chief financial officer, Brian Boland, said National Grid brings deep experience of how power plants interface with data centres, along with vendor relationships and access to engineering contractors that have become scarce across the sector. That operational expertise is arguably as valuable to the deal as the cash itself.

Which Stocks, and Why

National Grid is the only London listed company with a direct stake in this deal. The $1.75 billion outlay is a sizeable capital commitment, though it sits inside National Grid Ventures, the group's unregulated investment arm, rather than the regulated UK and US transmission and distribution businesses that produce most of its earnings today. Because Joulent is a young company with a single project still under construction, this investment is unlikely to move National Grid's near term profit. Its importance is strategic: it gives the group direct exposure to a structural growth trend, AI driven electricity demand, that most regulated utilities can currently only watch from the sidelines.

What to Watch

Investors should watch whether Joulent's West Texas project reaches financial close and starts construction on schedule, and whether National Grid discloses how this investment is performing when it next reports Ventures division results. Any follow on funding rounds, additional Joulent projects, or similar behind the meter deals from National Grid would be a signal that this is becoming a repeatable growth strategy rather than a one off bet.