Executive summary

FlexGen and Lightshift Energy are collaborating on 16 battery energy storage system projects across Massachusetts, Virginia, and Vermont. Six projects are complete, delivering more than 25 MW/85 MWh of storage capacity, while 10 more projects are under construction and expected to add over 55 MW/200 MWh. Lightshift develops, owns, and operates the projects, while FlexGen provides energy storage software and services, including its HybridOS® energy management system (EMS).

FlexGen Power Systems, based in Durham, North Carolina, USA, provides software and services for deploying, managing, and optimizing battery energy storage systems. Its HybridOS platform integrates with battery manufacturers and supports more than 200 energy storage systems worldwide.

Lightshift Energy, headquartered in Arlington, Virginia, develops, owns, and operates utility-scale energy storage projects. Founded in 2019, the company develops standalone energy storage projects using advanced analytics and multi-use applications.

Battery storage developer Lightshift Energy and software provider FlexGen have expanded a partnership that began in 2024. The two companies now work together on 16 battery energy storage system (BESS) projects across Massachusetts, Virginia and Vermont. Six projects have been completed, delivering more than 25 MW/85 MWh of flexible storage capacity to local grids and communities. Another 10 projects are under construction and will deliver over 55 MW/200 MWh.

Lightshift develops, owns, and operates the projects, while FlexGen provides the software layer, primarily through its HybridOS® energy management system (EMS). The platform supports battery operations across different hardware configurations and helps manage charging, discharging, and grid response.

“Across New England and the PJM region, growing energy demand is driving utilities to explore solutions to strengthen their local grids while reducing costs for residents,” said Joe Leavitt, Chief Technology Officer at Lightshift Energy. He said the partnership provides a model for deploying battery storage across sites with different technologies and requirements.

The companies have also expanded their work at a BESS facility in Danville, Virginia. FlexGen and Lightshift completed an integration of FlexGen’s EMS at the site, which provides flexible capacity to Danville Utilities for peak shaving and demand response during periods of high demand.

The companies upgraded the site's battery management system (BMS) and EMS while adding more batteries. The work increased the facility’s capacity by 14%, providing additional grid stability and extending the energy storage asset’s lifespan.

“It’s no longer just about building more battery projects. Meeting our energy needs will require getting more from the assets we already have,” said Jason Abiecunas, Executive Vice President of Business Development at FlexGen. He said the work is aimed at extending asset life, adding capacity and maximizing the value of existing sites.

The companies also plan to develop Danville II, a second 11 MW project with Danville Utilities. The project will operate as a peak-shaving asset and support efforts to manage energy costs as regional electricity demand grows.

FlexGen HybridOS will serve as the energy management system for the 10 projects under construction. The software is compatible with more than 80 configurations of batteries and power conversion systems (PCS), allowing operators to use different hardware configurations across projects.