2G Energy Wins 275 MW Order From Energy Vault to Power US AI Data Centers With On-Site Gas Engines
2G Energy, the German maker of gas engine power plants, has received a 275 MW order from Energy Vault for AI and data center projects in the US, including hyperscaler sites. Deliveries run from the fourth quarter of 2027 through the third quarter of 2028. The value wasn’t disclosed.
Power that doesn’t wait for the grid
The reason for the deal is simple. Data centers need power now, and grid connections in many US regions take years. “AI infrastructure customers need firm, always-on power on timelines that conventional grid interconnections often cannot meet,” says Marco Terruzzin, Energy Vault’s chief revenue officer.
2G’s answer is plug-and-play containerized generators. They’re assembled and tested at its factory in Heek, Germany, then shipped ready to connect. The product range covers combined heat and power units from 20 kW to 4,500 kW and peaking units from 500 kW. They run on natural gas, biogas, low-calorific gases or hydrogen. With heat recovery, overall efficiency can top 90%.
Energy Vault’s piece
Energy Vault will put the 2G units inside an integrated power system alongside battery storage, all run by its VaultOS software. The generators provide dispatchable, always-available power. The batteries handle fast swings. AI training loads can jump sharply in milliseconds, and the software coordinates the two to keep power quality stable.
Scaling up in Heek
2G has installed more than 10,000 systems worldwide and is adding factory capacity. A new production hall is already running, and a second site should be finished by the end of 2027.
“Growing power demand, combined with limited grid capacity and constraints on available infrastructure and resources, is increasing the importance of alternative and decentralized power supply solutions,” says CEO Pablo Hofelich.
On-site gas generation used to be for backup. For AI data centers it’s becoming the main power source.