FirstLight Power to replace Connecticut peaker plant with 17MW battery energy storage system

LinkedIn
Twitter
Reddit
Facebook
Email

Independent Power Producer (IPP) FirstLight Power will replace its Tunnel Jet peaking facility in Connecticut, US with a battery energy storage system by 2024/25.

The Tunnel Jet facility in Preston, southeast Connecticut, is the company’s last fossil fuel generating unit and will be decommissioned in 2023. Construction will begin following procurement and the securing of interconnection and permits, with a target operational date of late 2024 or early 2025.

It will work with renewable energy developer New Leaf Energy to design, manage, and procure the 17MW battery energy storage system (BESS). The BESS will be co-located at the same site as FirstLight’s Tunnel Hyro facility, a 2.1MW run-of-river hydoelectric power facility on the Quinebaug river.

FirstLight and New Leaf will also provide US$60,000 in seed funding to a renewable energy industry training programme for local workers organised by Operation Fuel. Operation Fuel is an emergency energy assistance programme which provides help with utility bills to residents across Connecticut.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

Not ready to commit yet?
  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Alicia Barton, president and CEO of FirstLight, said: “We are excited to be working with New Leaf Energy to develop a new emissions-free battery energy storage system that will deliver clean, safe, and reliable electricity to meet Connecticut’s growing clean energy needs.”

Dan Berwick, CEO of New Leaf Energy, added: “New Leaf Energy is excited to advance this important project at FirstLight’s Tunnel Jet facility, part of an innovative collaboration that will help create hybrid renewables solutions across New England by combining solar and energy storage resources with existing generation.”

Fossil fuel plants make great locations for renewable energy resources and energy storage thanks to existing grid connections and infrastructure. Other fossil fuel plants in Connecticut may follow in Tunnel Jet’s footsteps after ArcLight, which owns 5GW of thermal plants across the New England state, New York and California, said it sees its portfolio as ideal locations for battery storage projects.

FirstLight entered the battery energy storage market in 2019 when it acquired Advanced Microgrid Solutions (AMS) portfolio of energy storage units, at Brandeis University and the University of Massachusetts at Dartmouth, totalling 1.3MW. AMS was then acquired by Fluence, the largest battery energy storage system in the world, a year later.

11 November 2025
San Diego, USA
The 2024 Summit included innovative new features including a ‘Crash Course in Battery Asset Management’, Ask-Me-Anything formats and debate-style sessions. You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

September 11, 2025
Hithium has announced its lithium-ion and sodium-ion battery energy storage system (BESS) for supporting data centres, while Storion Energy has secured its first vanadium electrolyte customer.
September 11, 2025
A flurry of large-scale BESS project news in the US from four major developer-operators, coinciding with the country’s largest clean energy trade show RE+.
Premium
September 11, 2025
US sodium-ion battery firm Natron Energy has ceased trading, putting an end to its two domestic gigafactories. The news points to the challenges for battery chemistries hoping to compete with LFP, analysts told Energy-Storage.news.
September 10, 2025
Tech giant Google has announced a partnership with utility SRP to help accelerate the commercialisation of non-lithium long-duration energy storage (LDES) technology.
September 9, 2025
Tesla announced its new integrated 20MWh battery energy storage system (BESS) solution, the Tesla Megablock, on 8 September in Las Vegas, US.

Most Popular

Email Newsletter