Google Amplifies Investment in Nuclear Fusion Technology

Tue 1st Jul, 2025

Google has significantly increased its investment in a nuclear fusion startup, aiming to accelerate the development of this promising energy source. The tech giant has committed to purchasing electricity generated from nuclear fusion, which is seen as a potential solution for producing large amounts of energy without generating long-lived radioactive waste.

Despite its potential, achieving practical nuclear fusion has remained a challenge, as no one has yet managed to extract more energy from fusion than is required to initiate the process. Michael Terrell, who leads Google's Advanced Energy division, expressed optimism regarding recent breakthroughs that may have brought Commonwealth Fusion Systems (CFS) closer to this goal.

CFS, a spin-off from the Massachusetts Institute of Technology (MIT), is working to establish the world's first commercial nuclear fusion power plant by the early 2030s. Currently, CFS is constructing a demonstration facility named SPARC in Devens, Massachusetts, which will utilize innovative superconducting magnets to control the plasma necessary for nuclear fusion. This compact and economically viable design is a key factor in Google's enthusiasm for the project.

While exact investment figures have not been disclosed, Google had previously invested in CFS in 2018 alongside other venture capitalists, including Bill Gates. Recently, the company has pledged additional funding to support CFS's efforts.

In addition to its financial investment, Google has secured a power purchase agreement to buy 200 megawatts of electricity from a commercial reactor planned in Virginia, representing half of the expected output from that facility. The length of the contract has not been revealed, but it is believed to be a strategic move to attract additional investors and expedite development.

Microsoft has previously engaged in a similar agreement with the fusion developer Helion, committing to purchase 50 megawatts and expressing plans to generate electricity as early as 2028. However, experts in Germany project that the first nuclear fusion power plants may not be operational until the mid-2040s.

Power purchase agreements like the one established by Google are seen as effective tools to reassure investors and accelerate technology development. While there is a risk of losing invested capital if the project fails, no payment is required for unfulfilled power delivery. Last year, Google also entered a contract for electricity from new nuclear power plants utilizing Small Modular Reactors (SMR). Moreover, Google's parent company Alphabet, along with Meta Platforms and Microsoft, has committed to purchasing substantial amounts of CO2 certificates through Direct Air Capture (DAC) initiatives.


More Quick Read Articles »