Elevate Infrastructure and ArcLight Capital Partners have begun operating Prospect Power Storage, the 150-MW/600-MWh Prospect Power battery energy storage facility in Rockingham County, Va.

The two companies participated in a recent  ribbon-cutting ceremony to commemorate completion of the project. Officials said Prospect Power is the largest standalone battery storage asset in Virginia and the PJM Interconnection, the regional grid operator.

The facility is expected to play a critical role in supporting grid reliability, enhancing system flexibility, and meeting rapidly growing electricity demand across the Commonwealth.

“Today marks an important milestone for Elevate and for Virginia’s energy future,” said Joshua Rogol, CEO. “Prospect Power demonstrates how Elevate executes utility-scale battery storage at scale to strengthen grid reliability, support economic growth, and help meet the increasing energy needs driven by data centers, artificial intelligence, and electrification.”

Prospect Power is the result of Elevate’s broader strategy to invest in and operate critical energy infrastructure in markets experiencing rapid growth in electricity demand. Elevate is building a portfolio of utility-scale battery storage assets designed to strengthen grid reliability and support long-term economic growth, with backing from ArcLight.

The private equity and infrastructure firm “has been investing and helping to build critical electric infrastructure for more than two decades, and Prospect Power represents the type of infrastructure the market needs to help support this next phase of growth,” said Angelo Acconcia, managing partner of ArcLight Capital Partners. “As power needs accelerate, driven by AI infrastructure, reshoring, and electrification, we believe battery storage will play an increasingly important role in providing both grid capacity and reliability and Elevate is at the forefront of this.”

With its ability to deliver up to 150 MW of fast-response power and store 600 MWh of energy, Prospect Power is capable of providing flexible capacity that can help balance supply and demand, manage peak loads, and improve overall grid performance.

Battery storage resources are becoming an increasingly important component of a reliable and resilient electric grid as electricity demand continues to accelerate across Virginia and the broader PJM region, a vast, highly competitive wholesale electricity market spanning all or parts of 13 U.S. states and Washington, D.C.

“Battery storage is playing a growing role in supporting a reliable, resilient and diverse grid,” said Stu Bresler, COO of PJM. “This project increases battery storage capacity within PJM by more than 50%, marking a significant milestone for energy storage in our region. Resources like this add flexibility to the grid and help support reliability as demand continues to grow.”

Prospect Power comes online as Virginia is putting forth policies and investments aimed at strengthening the electric grid and supporting long-term economic development. Battery storage is playing an increasingly significant role in that strategy.