From Landfills to Power Grids: Kearsarge Energy’s Renewable Blueprint

BOSTON, MA – July 01, 2026 – While many companies announce ambitious clean energy goals, Boston-based Kearsarge Energy is delivering on the commercial reality. The firm just announced the start of commercial operations for 88 megawatts (MW) of renewable energy projects brought online in 2025—a significant milestone that translates directly into generated power and revenue. This isn't just a plan; it's a portfolio of operational assets now feeding grids and generating returns across five states.

This recent achievement is part of a larger, aggressive growth strategy. The company, one of the Northeast's largest Independent Power Producers (IPPs), has already slated an additional 160 MW of capacity for installation by the end of 2026. Kearsarge's approach provides a masterclass in commercialization, leveraging a mix of solar arrays, standalone Battery Energy Storage Systems (BESS), and hybrid Solar + BESS projects to move from blueprint to a profitable, expanding enterprise.

The Power of Place: Local Partnerships Drive Tangible Returns

Kearsarge's success isn't built on a single, monolithic strategy but on a series of carefully executed public-private partnerships tailored to local needs. By transforming underutilized real estate—from capped landfills to vacant lots—into energy-generating assets, the company creates a compelling value proposition for municipalities and private landowners alike.

The North Sea Solar Array in Southampton, New York, exemplifies this model. Built on a capped landfill, the 4.5 MW ballasted solar system, which went live in April 2025, is a multi-faceted win. It generates an estimated 8.6 million kWh annually for the Long Island grid, enough to power over 700 homes. For the Town of Southampton, the 20-year lease is projected to generate $1.65 million in revenue. Crucially, it also delivers direct financial benefits to residents through a community solar program, offering a 10% monthly energy bill credit to participants, including those in low- and moderate-income households.

In Sterling, Massachusetts, Kearsarge deployed a hybrid Solar + BESS solution. A ground-mounted solar array generates over 2.2 million kWh annually, while a 20 MWh battery system gives the local municipal light department a powerful tool to manage energy costs. By storing energy when it's cheap and dispatching it during expensive peak demand events, the BESS directly reduces costs for the utility, with savings ultimately benefiting ratepayers. This model is bolstered by state-level incentives like Massachusetts's ConnectedSolutions program, which can pay battery owners for dispatching energy during peak events, creating another revenue stream that strengthens the project's financial viability.

This focus on affordability extends to programs directly targeting low-income communities. In St. Johnsville, New York, a 6.9 MW solar system is part of the state's "Solar for All" program, delivering clean energy savings to low-income households without requiring upfront payments or long-term contracts. This mirrors Kearsarge’s successful 4.77 MW project in Johnstown, NY, which also provides no-cost solar to residents, demonstrating a repeatable model for achieving both social equity and commercial success.

A Diversified Blueprint for National Growth

These individual projects are cornerstones of a deliberate and rapidly scaling business. Since 2011, Kearsarge has developed and financed over 300 MW of projects valued at $600 million. Today, it manages a formidable $900 million development pipeline representing 400 MW of future capacity. The company’s strategy of owning and operating its entire portfolio, often including the underlying land, signals a commitment to long-term asset management rather than short-term development flips.

"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," said Andrew Bernstein, Managing Partner of Kearsarge Solar. He noted the company is bringing nearly 90 MW online to "help manage demand and promote energy affordability," and that 2026 is proving equally ambitious with plans for 20 more projects across the country.

This national expansion is already underway, with projects slated for commissioning in Minnesota, Delaware, Connecticut, and Rhode Island. The firm’s ability to work across diverse project types—from rooftop arrays and carports to massive ground-mounted systems and standalone storage—gives it the flexibility to adapt to different geographical and market needs. This technological and financial agility is key to its competitive advantage in a crowded market.

Navigating a Labyrinth of Regulation and Grid Constraints

While Kearsarge’s growth is impressive, it is happening within an industry fraught with challenges. The journey from a proposed project to a commercially operational one requires navigating a complex and often contradictory web of state regulations, utility interconnection queues, and grid capacity limitations.

In New York, for example, where the company has multiple projects, ambitious state goals for 70% renewable energy by 2030 are colliding with the reality of a backlogged interconnection queue managed by the New York Independent System Operator (NYISO). Transmission congestion often prevents clean energy from reaching population centers, a problem that requires billions in grid investment to solve. These hurdles can add years and significant costs to project timelines.

Other states present their own unique obstacles. Vermont’s regulatory process has been described by industry insiders as “challenging and unpredictable,” potentially hindering the pace of deployment. Meanwhile, New Hampshire has historically lagged its neighbors in solar adoption due to outdated interconnection rules and a hesitant approach to new incentives. Even in a progressive state like Massachusetts, fully valuing and compensating battery storage for all its grid benefits remains a work in progress.

Kearsarge's success, therefore, lies not just in its ability to build projects, but in its expertise in navigating this difficult terrain. Its focus on distributed generation and battery storage is a direct answer to the grid's most pressing problems: intermittency and peak demand. By building smaller, localized projects, the company can often bypass the largest transmission bottlenecks, while its BESS installations provide the grid stability that becomes more critical as intermittent renewables replace traditional power plants.