Key facts
- Realta Fusion and Madison Gas and Electric are partnering to build a grid-connected fusion power plant in Wisconsin.
- The plant is expected to have a capacity of 200 megawatts and be operational in the mid-2030s.
- Utilities are seeking fusion technology to provide consistent, baseload power, complementing intermittent renewables.
- Demand from AI data centers is a significant driver for utilities' interest in fusion power.
- Other notable partnerships include CFS with Dominion Energy, Helion with Chelan County PUD, and Type One Energy with TVA.
Utilities are increasingly forging partnerships with fusion startups, driven by anxieties over future power supply and the growing demand from energy-intensive sectors like AI data centers. These collaborations offer fusion companies crucial credibility, engineering support, and access to real estate for grid interconnection, while utilities gain early exposure to a technology that could provide consistent, baseload power.
Realta Fusion recently announced a deal with Madison Gas and Electric to potentially build one of the first grid-connected fusion power plants in Wisconsin, targeting the mid-2030s for its 200-megawatt facility. The utility also made an equity investment in Realta.
Other notable utility-fusion partnerships include Commonwealth Fusion Systems (CFS) with Dominion Energy for its 400-megawatt Arc plant, expected online in the early 2030s, with Google and Eni set to buy its electricity. Helion is working with Chelan County Public Utility District for a 50-megawatt facility planned for 2028, which will supply power to Microsoft. In Tennessee, Type One Energy is planning a 350-megawatt plant with the Tennessee Valley Authority for the mid-2030s.
In Europe, Proxima Fusion is developing its Stellaris plant in Germany on a former nuclear power plant site, with RWE as an investor and partner, aiming for operation in the late 2030s. These deals are capital-efficient for startups, de-risking a capital-intensive business, and offer utilities a long-term bet on a fossil fuel-free alternative to intermittent renewables.