US power systems provider ABB has signed a series of agreements with Texas-based microgrid developer VoltaGrid to supply power system equipment for multiple US data center power projects supporting AI workloads.

Under the terms of the deal, ABB will deliver 27 synchronous condensers with flywheels along with integrated automation, excitation, and power control housed in prefabricated eHouse units. According to the companies, the equipment is designed to provide inertia, voltage support, and short-circuit strength.

VoltaGrid will pair the power equipment with its natural-gas-fueled microgrid generation systems. Volta launched its Qpac platform earlier this year, in partnership with gas engine provider Jenbacher. The platform is a modular natural gas power system, with each reciprocating node generating up to 20MW of power.

“ABB is proud to partner with VoltaGrid and support the evolving energy ecosystem in the US. Across the world, data centers are increasingly critical infrastructure, and so maintaining grid stability has shifted from being optional to strategic,” said Per Erik Holsten, president of ABB’s Energy Industries division. “Delivering stable, reliable, and efficient power generation is vital to enable data center growth. Our integrated automation, electrification, and digitalization solutions play an important role to meet growing demand while maintaining energy security.”

Deliveries are scheduled to begin in December 2025, with the first systems expected online by April 2026. The orders were booked across the first three quarters of 2025. Financial terms were not disclosed.

“As data centers expand, these machines are seeing renewed importance for their ability to provide inertia and short-circuit strength. For VoltaGrid, they will help ensure reliable, resilient microgrid performance,” said Kristina Carlquist, head of Synchronous Condenser Product Line at ABB’s Motion High Power division.

VoltaGrid has signed several notable energy supply agreements with data center firms. In October, it signed its biggest contract to date with cloud giant Oracle for more than 2GW of capacity to power the company’s AI data centers.

In February, the company partnered with Vantage Data Centers to deploy 1GW of off-grid natural gas generation across its North American portfolio.

Last August, it agreed to supply the Elon Musk-owned xAI Memphis data center with 14 mobile generators, each capable of providing 2.5MW, giving it an additional 35MW of power capacity.