Apollo Atomics

Apollo Atomics is a Cambridge, MA-based nuclear technology company developing the world's most power-dense compact pressurized water reactor (PWR). Founded by MIT-trained nuclear engineers, the company's core innovation is deceptively elegant: rather than redesigning the entire reactor, Apollo redesigned a single component - the steam generator - making it 20x smaller while delivering the same thermal power. This "Compact Steam Generator" (CSG) shrinks the overall reactor footprint by roughly 40x compared to conventional PWRs, transforming a decade-long, $20B construction project into a factory-built, truck-transportable machine that can be deployed in under 24 months. Crucially, Apollo preserves everything the NRC has already licensed dozens of times: light water, low-enriched uranium, and components sourced from existing, qualified nuclear supply chains - dramatically reducing regulatory and operational risk compared to competitors relying on exotic fuels or unproven coolants.

Apollo's product roadmap consists of three reactor variants - the A-10 (10 MWe), A-50 (50 MWe), and A-300 (300 MWe) - targeting data center operators, industrial offtakers (chemicals, refining, heavy manufacturing), and grid-connected utilities. The company has already achieved fuel criticality, built a working demonstrator, and is targeting a 1 MW demonstrator deployment in 2027 followed by a 10 MW commercial pilot. Apollo submitted its regulatory engagement plan to the NRC in early 2026 and is targeting a construction permit application by 2028. The company has also entered a formal research collaboration with MIT's Department of Nuclear Science and Engineering to validate its computational models and support its licensing pathway. With over 20 GW in signed Letters of Intent in its commercial pipeline, Apollo has demonstrated substantial market demand.

Apollo Atomics represents a significant force in the US energy supply chain precisely because it sidesteps the two biggest failure modes of nuclear development: supply chain novelty and regulatory uncertainty. By leaning into proven PWR technology and existing qualified vendors, Apollo can plug into the established US nuclear industrial base rather than building a new one from scratch. In an era of surging electricity demand driven by AI data centers and industrial reshoring, Apollo's sub-24-month deployment timeline and target price of 3¢/kWh positions it as one of the most credible near-term SMR options for domestic energy security and decarbonization.