Corporations in the US have contracted nearly 48GW of additional clean energy since last February (2024), with data center and technology companies responsible for almost all the growth, according to a recent S&P Global report.

Overall, the report recorded a 66.4 percent increase in contracted clean energy capacity between its 2024 and 2025 updates.

The technology and web services sector contributed nearly 92 percent of the new additions. The growth is driven by the explosion of artificial intelligence, and recent projections project that energy consumption tied to the data center sector will almost double to nearly 800TWh by 2030.

Texas led all US states in corporate-tied clean energy capacity, accounting for 27.6 percent of the tracked total.

To meet projected demand, data centers and technology firms are diversifying their energy procurement strategies, seeking various power sources for their operations.

Nuclear energy has benefitted significantly from this growth, making up 43 percent of the tracked 47.3GW year on year.

This is split between traditional nuclear and small modular reactors (SMR). In the last year, Microsoft and Amazon have secured long-term supply agreements to power their operations with large-scale nuclear power.

Within the SMR and microreactor sector we have seen a swathe of energy supply agreements. Notable nuclear deals included, US nuclear microreactor firm Oklo’s non binding supply agreement with US data center developer for up to 12GW of power through 2044. In addition, in October, AWS signed three agreements with Energy Northwest, X-energy, and Dominion Virginia to support the deployment of more than 600MW of power across Washington and Virginia.

S&P has recorded 20GW worth of nuclear deals since February 2023, all to the technology sector. However, with most of the capacity tied to SMRs, which remain firmly in their development phase, the majority is unlikely to come online before 2030.

Traditional renewable energy remains a crucial power source for the US data center market. In total, S&P reported that 49.1 percent of the corporate US clean energy capacity tracked was tied to solar, with wind a distant second, representing only 23.9 percent of the total.

The majority of the agreements were Power Purchase Agreements (PPAs). Notable PPAs included a 300MWac solar PPA between Meta and Longroad Energy in Texas, a 724MW solar PPA between Google and Leeward Energy in Oklahoma, and a 100MW solar PPA between Amazon and EDP Renewables North America in Mississippi.