X-energy rides nuclear wave, raises $700M Series D

Nuclear startup X-energy has raised $700 million in a Series D funding round, bringing its total capital raised to $1.8 billion. This new round follows an expanded Series C that increased from $500 million to $700 million, resulting in $1.4 billion raised over the past year. The Series D was led by Jane Street, with participation from investors including Ares Management, ARK Invest, Emerson Collective, and others. X-energy is developing high-temperature, gas-cooled Xe-100 reactors, each producing 80 megawatts of electricity. These reactors use uranium fuel encapsulated in carbon-coated pebbles cooled by helium gas, generating heat that drives steam turbines. X-energy has gained traction amid growing interest in nuclear power from technology companies and data center operators. Notably, Amazon’s Climate Pledge Fund invested in X-energy’s Series C and announced plans to purchase nuclear capacity from the company, potentially deploying up to 5 gigawatts of nuclear power by 203