Oneida is Online — 250 MW of Grid-Transforming Storage
NRStor leads the way in energy innovation with Canada’s largest battery storage project, built on a foundation of strong partnerships.
How Canada’s Biggest Energy Storage Project Got Built
Matt Jamieson, President and CEO of Six Nations of the Grand River Development Corporation, and Annette Verschuren, Chair and CEO of NRStor Inc., speak with Amanda Lang about the Oneida Energy Storage Project — one of the world’s largest clean energy storage facilities — and how early Indigenous partnerships and a shared vision for economic reconciliation helped bring this nation-building infrastructure to life.
Grid Innovation. Shared Value.
We develop cost-effective, reliable energy storage projects that enhance grid resiliency, reduce costs, and provide clean power.
Residential
Empowering residential customers to take control of their energy supply with the Tesla Powerwall home battery.
Utilities
Implementing industry-leading energy storage technologies to enable clean, flexible, and reliable electricity systems.
Community and Government Partners
Collaborating with partners to enhance grid resiliency, reduce costs, and drive economic growth.
Indigenous
Partnerships
Partnering with Indigenous communities to drive economic reconciliation and sustainable growth.
We build, own, and operate innovative energy storage projects
Learn how our innovative storage projects are helping build a more reliable, sustainable, and efficient energy grid across Canada. From stabilizing the grid to supporting renewable integration, each project plays a key role in shaping the future of energy. Click here to learn more about all our projects.
Oneida
250MW / 1,000MWh Battery Energy Storage Facility
First-of-kind project in Canada built on strong partnerships.
Goderich
1.75MW/7MWh Compressed Air Energy Storage Facility
World’s first commercial, fuel-free compressed air energy storage (CAES) facility.
Smart Grid Nova Scotia
134 Tesla Powerwalls Installed
Nova Scotia’s first large-scale deployment of home battery storage, advancing grid reliability and renewable integration.
NRStor in the news
All the news, insights and resources you need to stay up to date on energy storage in Canada.
September 26, 2025
Honoured for its exceptional worksite safety performance in delivering Canada’s largest operational energy storage facility. Five project partners — Northland Power, Six Nations of the Grand River Development Corporation, Aecon, NRStor and Mississaugas of the Credit Business Corporation — collaborated to build a safety culture that put workers first, supported by a joint monitoring framework, extensive workforce training and over 550 safety inspections.
September 18, 2025
The 2025 Energy Storage Milestone Award was presented to Oneida Energy Storage LP. The Oneida project, a 250 MW/1,000 MWh battery facility now operating in Ontario, is currently the largest of its kind in Canada.
May 07, 2025
The Oneida Energy Storage Project (Oneida) has officially entered commercial operations, becoming the largest battery energy storage facility in operation in Canada, and one of the largest globally.
July 12, 2024
In the realm of renewable energy, Annette Verschuren stands as a trailblazer of innovation and purpose-driven leadership. As Chair and CEO of NRStor Inc., Annette powers up the energy transition by advancing energy storage solutions, driving sustainable change, and fostering societal progress.
February 9, 2023
NRStor Inc. is pleased to announce that the Independent Electricity System Operator has entered into an Energy Storage Facility Agreement (ESFA) for the Oneida Energy Storage Project. This is a significant step in advancing its development and follows the issuance of an Order-in-Council and Ministerial Directive to enable the Project to proceed, granted by the Government of Ontario.
October 1, 2021
The 250-megawatt Oneida Energy Storage Project is poised to be a ground-breaking facility — on several fronts. Not only is the major resource project expected to be one of the largest energy storage facilities in the world, but it’s also noteworthy for its collaborative and inclusive approach: it’s a joint 50:50 venture that’s being developed in collaboration with Indigenous partners.
August 16, 2021
As part of an IESO research program, NRStor Inc. has built a solar plus storage facility in Minto, located one-hour north of Kitchener, by adding a 50 kW rooftop solar array to complement their existing 2 MW flywheel energy storage system. Pairing energy storage with wind or solar generation could have a real impact on helping meet the province’s emerging electricity needs.