Founded in 2023 at Idealab Studio, NuCube Energy is engineering a high-temperature, no-moving-parts modular microreactor capable of delivering heat up to 1,100 °C alongside reliable electrical output. The reactor is designed for inherent safety, supply-chain efficiency, and ease of licensing, making it suitable for industrial campuses, remote operations, and rapidly growing data-infrastructure loads. Headquartered in Idaho Falls, Idaho, near Idaho National Laboratory, the company is also expanding its presence in Arizona to meet the state’s surging grid demand from semiconductor fabrication, advanced manufacturing, and hyperscale data centers. NuCube’s platform targets replacement of natural gas in energy-intensive industrial processes while offering competitive electricity in distributed environments. The recent infusion of capital will fund materials testing, final design refinement, and regulatory engagement on the path to a demonstration unit. Although the company has not disclosed revenue or user metrics, management emphasizes economic viability and large-scale deployment potential enabled by its simplified architecture.

Total raised

$13M

Funding rounds

1

Latest round

Equity

Latest activity

Feb 2026