CS Energy announces completion of the largest landfill solar-plus-storage project in Massachusetts

CS Energy, LLC, a leading integrated energy firm that designs and builds optimized projects in the solar, storage and emerging energy industries, announced its successful completion of a 4.5 MWdc solar project installed with a 3.8 MWh lithium-ion storage solution on a landfill cap site located in Amesbury, Massachusetts. The largest solar plus storage system to be completed to date is part of a partnership between the City of Amesbury and Kearsarge Energy, an award-winning New England based renewable energy developer and financier who is actively building out its energy storage portfolio.

With close to 1 GW of solar installed to date, including over 160 MW of landfill solar installations, CS Energy is a leading engineering, procurement, and construction (EPC) company. The organization is ranked in the top 20 Solar Contractors in the US by Solar Power World and named the #1 commercial solar installer by Wood Mackenzie with leading market share in MassachusettsNew York and New Jersey. This project was one of the first solar plus energy storage projects to participate in the Solar Massachusetts Renewable Target (SMART) Program.

“CS Energy has a significant market share in the solar-plus-storage business. We are strategically scaling up our energy storage division and growing our register of successfully completed projects,” shared Sean Harrington, Director of Energy Storage of CS Energy. “Our background and experience in landfill solar enable us to foresee challenges and expedite projects. It’s another testament to our energy storage team’s capabilities and dedication.”

“As the owner and operator of the Amesbury landfill project, it was critical that Kearsarge Energy partner with a sophisticated and experienced EPC firm capable of navigating the complexities of landfill solar projects,” said Andrew Bernstein, Managing Partner of Kearsarge Energy. “CS Energy’s reputation and extensive experience in this specific field, along with its commitments to quality and safety, made the project an unequivocal success.”

CS Energy is a market leader with over 130 MWh of energy storage projects installed or underway in four states. Designing and constructing the Amesbury solar plus storage system required experience in building projects within the allowable limits of the cap design, as well as with the allowable limits of the Department of Environmental Protection’s (DEP) Post-Closure Use Permit (PCUP). The firm’s advanced capabilities and extensive onsite overview enabled the project to meet critical PCUP requirements, including not exceeding the 7-psi ground pressure limit for all activities on the landfill cap. Each construction activity, delivery, and the battery energy storage system was evaluated and designed by CS Energy and approved by an independent engineer for DEP compliance. The result of these efforts is a well-designed solar-plus-storage system that will generate clean, renewable energy (from a previously unusable site) for decades to come.

The Amesbury project went live in January 2020 and is expected to produce 5,600 MWh of electricity each year.

About CS Energy
CS Energy, LLC (formerly Conti Solar, LLC) is a national EPC, O&M, and energy storage company. CS Energy’s attention to detail, flawless execution and collaborative culture has enabled them to successfully design and install nearly GW of solar projects since their early initiatives in 2004. CS Energy leverages established partnerships with solar developers, IPPs, utilities, off-takers, suppliers, and landowners to streamline project development, design, construction and operations, driving down project costs and creating value across all project stakeholders. Majority-owned by Ares Infrastructure and Power with a minority position retained by The Conti Group, CS Energy is well positioned with a diversified network of industry experts and the financial resources to be a trusted, long-term partner.

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