Kearsarge Energy Launches 88 MW Solar BESS Projects in 2025

July 2, 2026 — Kearsarge Energy has announced the commercial operation of 88 MW/MWh of new renewable energy projects in 2025, marking a significant step in addressing soaring electricity demand across the Northeast. The Boston-based developer also revealed plans for more than 160 MW/MWh of additional capacity by the end of 2026.

The portfolio combines solar arrays, standalone Battery Energy Storage Systems (BESS), and hybrid solar-plus-storage installations. Developed through public-private partnerships, these projects emphasize energy affordability, peak demand reduction, and support for low-income communities.

As utilities face growing pressure from data centers, electrification, and extreme weather, Kearsarge Energy’s renewable energy projects deliver both clean power and grid stability. With ownership of assets and often the underlying land, the company maintains long-term operational control.

Overview of Kearsarge Energy’s 2025 Renewable Portfolio

Kearsarge Energy’s 2025 projects feature a balanced mix of technologies tailored to local needs. These include ground-mounted solar, carport and rooftop installations, and innovative landfill redevelopment.

Project Mix: Solar, Solar + BESS, and Standalone Battery Storage

The portfolio showcases flexible configurations. Solar + BESS hybrids provide simultaneous generation and dispatchable power. Standalone BESS installations focus on peak shaving for municipal utilities, while pure solar projects maximize clean energy output and community benefits. Many sites repurpose underutilized land, such as closed landfills, advancing both renewable goals and land revitalization.

Highlighted 2025 Renewable Energy Projects

Sterling, Massachusetts – Solar + BESS for Municipal Peak Management

A solar ground-mount array paired with a 20 MWh battery system serves the Sterling Municipal Light Department. The solar component is projected to generate over 2.2 million kWh annually, while the BESS offsets peak demand, delivering direct energy cost savings to local ratepayers.

North Sea Solar Array, Southampton, NY – Landmark Landfill Solar Project

This ballasted solar system sits atop a capped landfill and feeds the Long Island electric grid. Generating more than 8.5 million kWh per year, it provides bill credits to the Town of Southampton and supports low- and moderate-income residents. The Landfill solar project in Southampton, NY, exemplifies creative brownfield redevelopment.

North Reading, MA – 22.5 MWh Standalone BESS

The 22.5 MWh battery energy storage system helps the Reading Municipal Light Department manage peak loads and contributes to broader ISO New England peak reduction, enhancing regional reliability and sustainability.

Orleans, Vermont – Solar and Battery Storage for Local Grid Support

A 20 MWh standalone BESS reduces strain on the local utility during critical grid events. Complementing it is a 7.5 MW solar array expected to produce over 8.7 million kWh annually, supplying renewable energy credits to the Vermont Public Power Supply Authority.

St. Johnsville, New York – Solar for All Low-Income Program

A 6.9 MW single-axis tracker solar facility on company-owned land generates more than 10.5 million kWh yearly. As part of New York’s Solar for All program, it delivers clean energy savings to low-income households without upfront costs or long-term fees.

Additional sites in Cambridge, Maryland; Watertown, Massachusetts; and Pelham, New Hampshire, support community solar subscribers, schools, and businesses while creating local construction jobs.

Geographic Expansion Across the Northeast and Beyond

In 2025, Kearsarge Energy focused on Massachusetts, Vermont, New York, Maryland, and New Hampshire. For 2026, the company is expanding into Minnesota, Delaware, Connecticut, and Rhode Island, while growing its presence in existing states. This positions Kearsarge Energy as one of the leading independent power producers in the Northeast with a growing national footprint.

Benefits of Kearsarge Energy’s Renewable Projects

Kearsarge Energy 88 MW solar BESS 2025 projects deliver multiple advantages:

• Energy Cost Savings: Municipal utilities and residents benefit from lower peak pricing and bill credits.
• Grid stress, Grid Reliability & Peak Shaving: BESS installations reduce stress on the grid during high-demand periods.
• Job Creation: Construction and ongoing operations generate local employment opportunities.
• Support for Low-to-Moderate Income Communities: Programs like Solar for All expand access to clean, affordable energy.
• Environmental Impact: Projects avoid emissions, repurpose landfills, and help states meet renewable portfolio standards.

These Northeast solar and battery storage projects align with regional decarbonization goals while addressing immediate affordability challenges.

What’s Next: 160 MW Planned for 2026

Kearsarge Energy expects to commission approximately 20 additional projects in 2026. This pipeline will significantly expand the company’s self-managed portfolio and further strengthen its position in the competitive renewable market.

“It was a pleasure to work closely with our multiple battery technology, solar, finance, and construction partners, as well as municipalities across the Eastern US, to continue to extend our leadership in the Northeast by bringing nearly 90 MW of renewable energy online to help manage demand and promote energy affordability. 2026 is proving to be just as exciting as we build 20 more projects across the country,” said Andrew Bernstein, Managing Partner of Kearsarge Solar.

Conclusion

With 88 MW operational in 2025 and ambitious growth ahead, Kearsarge Energy continues to demonstrate strong leadership in Northeast renewable energy. By combining solar, Battery Energy Storage System (BESS) Northeast capabilities, and community-focused development, the company is helping utilities and residents navigate rising demand while keeping energy affordable.

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