South Street Storage battery energy storage system will lower costs during peak energy demand and increase grid flexibility.
Vermont Business Magazine Encore Renewable Energy has energized South Street Storage, a 2MW, 8MWh utility-scale battery energy storage system, located next to the South Street Solar project in Middlebury. South Street Storage is Encore’s first energy storage project and will provide vital demand mitigation services and cost savings to Green Mountain Power (GMP) and its customers.
“The past few years of intense storms and record heat have demonstrated the importance of a dependable electric grid, and we need more energy storage for that,” said Encore founder and co-CEO, Chad Farrell. “Thankfully there are leading utilities like Green Mountain Power, who have long understood the value of locally sited energy storage for keeping our electricity supply clean and affordable.”
The lithium-ion battery systems for this project were provided by KORE Power. KORE, a leading domestic manufacturer of battery energy storage systems, built the units installed by Encore at its Waterbury, VT facility. KORE’s operation’s team will also be coordinating with Encore to monitor the system’s performance.
“The South Street Storage project is a model of well-orchestrated grid modernization that is made possible when a developer, a manufacturer and a utility share the vision of delivering safe, reliable, clean power to customers,” said Jay Bellows, CEO of KORE Power. “Through this coordination the teams from Encore, KORE and Green Mountain Power will deliver affordable power that is there when it is needed.”
The 2MW energy system at South Street adds to GMP’s growing network of stored energy, now over 75 MW, making it Vermont’s largest source of dispatchable power.
“When Vermont organizations work together, great things happen for communities and customers. This project will help deliver lower power costs during expensive peaks, by sending stored clean Vermont energy back to the grid when it’s needed most,” said Mari McClure, GMP’s President and CEO.
Solar and energy storage are ideal partners and integrating energy storage into the power grid can transform our existing energy infrastructure and facilitate the clean energy transition by converting power generated from an intermittent fuel source like the sun or wind into dispatchable power, increasing grid flexibility.
As the climate continues to warm, peak demand events like June’s heat wave will become more prevalent; energy storage provides the ability to store extra energy from times when electricity demand is lower to utilize it when it’s most needed, saving customers significant amounts of money.
About Encore Renewable Energy
Encore Renewable Energy is delivering energy’s second act through community-scale solar and energy storage. Based in Burlington, Vermont, their team specializes in impact-driven renewable energy development and long-term asset ownership, reviving underutilized property such as brownfields and adding value with innovative land use solutions. As a certified B Corporation and leader in socially responsible business, Encore is committed to revitalizing communities and creating a cleaner, brighter future for all. Encore is a portfolio company of SUSI Partners. For more information about Encore, please visit encorerenewableenergy.com. Stay connected via Twitter and LinkedIn.
About KORE Power
KORE Power is a leading U.S.-based developer of battery cell technology and energy storage solutions for customers seeking on-demand power and advanced battery products. KORE offers lifetime backing from system design and manufacturing through deployment and operations, delivering safety, energy security and reliability for our clients across energy storage, e-mobility, and utility, industrial, and defense markets. As an integrated provider of cells, batteries, and battery energy storage solutions headquartered in Vermont, with a history that goes back five decades, KORE is uniquely positioned to deploy domestically produced energy storage solutions that help to meet America’s growing need for power.
9.3.2025. MIDDLEBURY, VT — Encore Renewable Energy
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