Realta Fusion and Madison Gas and Electric (MGE) are jointly developing a 200-megawatt electric (MWe) fusion power plant in Wisconsin, targeting operation sometime in the 2030s. MGE has made a meaningful direct equity investment in the Madison-based startup, rather than limiting its role to a future power purchase agreement, and will provide engineering support, equipment, and assistance with permitting and financing. The facility is designed to generate enough electricity for roughly 150,000 homes and could help address rising demand from artificial-intelligence data centers. Realta is developing compact, scalable, modular CoSMo fusion energy systems using magnetic mirror fusion, a linear approach to plasma confinement. In June 2026, the company said it became the first commercial fusion entity to convert plasma kinetic energy directly into electricity. Realta is also developing the Realta Forge research and development facility at the former Oscar Mayer site in Madison, backed by up to $55 million in state and local incentives and expected to create more than 600 jobs. The partnership gives MGE an early role in a high-risk technology that could provide continuous, carbon-free power, supporting its commitment to net-zero carbon electricity by 2050. It also stands out from many fusion industry agreements because MGE is taking an equity position and providing hands-on utility support during development.