We have developed two of the three 50 MW/4-hour grid-scale battery facilities in Bridgewater and Waverley, with our third site in the Valley to be operational August 2026. These battery sites are now part of daily grid operations and are already providing safe, reliable, and clean energy during peak demand.
Our project team has been working with stakeholders and engaging communities throughout the planning stages of the development. In June 2024, we received full project approval from the Nova Scotia Utility and Review Board for the capital costs required to develop the grid-scale battery facilities.
The grid-scale battery facilities have various functions that will benefit the grid throughout the clean energy transition and beyond. These benefits include:
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Bridgewater Grid-Scale Battery Site
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Waverley Grid-Scale Battery Site
This project represents the many ways we’re collaborating with partners to help mitigate costs for customers and work meaningfully with all 13 Mi’kmaw communities.
Together, the Wskijnu’k Mtmo’taqnuow Agency and Nova Scotia Power have shaped an investment arrangement that enables Mi’kmaw communities to participate as equity partners in relation to the grid-scale battery project, benefitting all 13 Mi’kmaw communities in Nova Scotia.
The Grid-Scale Battery project is the first clean energy project part of the Canada Infrastructure Bank’s Indigenous Equity Initiative. Through secured low-cost financing, this collaboration is helping to mitigate costs for customers.
Through Natural Resources Canada’s Smart Renewable and Electrification Pathways Program (SREP) and the Electricity Predevelopment Program (EPP), over $117 million has been secured for the project, representing roughly one third of the total project cost.
We are committed to being the first and best source of information for community members and stakeholders about our battery projects. Community and stakeholder engagement started early in our planning stages and is continuing throughout the development and implementation of the sites.
To date, our project team has engaged with key stakeholders and hosted community open houses in each of the three communities we’re working in. Identified communities and stakeholders include:
Are we missing a community group or stakeholder that you think should be on the list? Email us at engage@nspower.ca with your suggestion.
"Anything that gets Nova Scotia off fossil fuel is a beautiful thing!"
White Rock Customer
"The first major concern is the sourcing of materials, like lithium. My concerns are environmental, the ethical treatment of communities and people, and proper pricing."
Bridgewater Customer
"This is a really neat project! Once they're built, there should be public tours."
Spider Lake Customer
Our grid-scale battery site is located near our substation off Upper Branch Road in the Town of Bridgewater. This new access driveway will be used by Nova Scotia Power staff and contractors to access the substation and battery facility for routine maintenance and monitoring.
This location is ideal for the battery facility as it is adjacent to the existing infrastructure needed to charge and distribute energy throughout the grid. The site is next to 138 kV transmission lines, necessary to transport the electricity from the batteries. The existing substation will convert distributed electricity to different voltages.
Community Open Houses:
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Our grid-scale battery site is located near our substation off Waverley Road in the Halifax Regional Municipality. This location is ideal for the battery facility as it is adjacent to existing infrastructure needed to charge and distribute energy throughout the grid. The site is next to 138 kV transmission lines, necessary to transport the electricity from the batteries, and the existing substation will convert distributed electricity to different voltages.
Community Open Houses
Our grid-scale battery site is located near our substation on White Rock Road in the Municipality of the County of Kings. This location is ideal for the battery facility as it is adjacent to existing infrastructure needed to charge and distribute energy throughout the grid. The site is next to 138 kV transmission lines, necessary to transport the electricity from the batteries, and the existing substation will convert distributed electricity to different voltages.
Construction on a new access driveway to the site began in fall of 2024. Work on site has continued through the summer of 2025, and the site will be commissioned in 2026.
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For the size and capacity of our proposed energy storage facilities, the lowest cost commercially available technology is lithium-ion batteries.
Our proposed battery facilities will be charged from the sources of energy generation connected to the NS Power transmission grid and in operation at the time charging is taking place. As we approach 2030, and more renewables are added to the grid, our systems will be charged with the excess renewable energy that is available. This renewable generation does not need to be adjacent to the proposed battery sites, as these systems will be grid-integrated.
Safety is our number one priority in any of the work we do. The development and operation of these proposed battery facilities is no different.
The battery containers will be equipped with thermal management systems that regulate the system’s temperatures and prevent overheating. Each container also has fire protection features and the facilities will be monitored 24/7 from our control centre.
In the rare event that a container overheating leads to a fire, the spacing of containers and gravel ground cover—similar to the type in existing substations—is designed to prevent any additional containers or areas adjacent to the container from being impacted.
We are committed to working closely with local fire departments and our battery vendor on the development of an Emergency Response Plan and providing members with the necessary training and resources. Our project team has begun early consultation with local fire departments in each community and we will continue to work with members throughout the development and operation of the proposed battery sites.
The batteries themselves do not produce noise. The facility components must have HVAC systems in each enclosure along with power systems equipment, like transformers and inverters, similar to existing substations. Noise reduction strategies were included when selecting locations and considering layouts to reduce the overall impact on nearby residents. Sound level testing will be completed once the facility is operational.
Technology for recycling batteries is evolving as more and more energy storage systems are commissioned. There is an existing recycling and salvage industry in North America for electronics, including batteries, and we expect this industry to only grow over time with further adoption of electric vehicles and other projects utilizing lithium-ion batteries.
Today, many metals that are included in the batteries are recycled, as they hold their value beyond the life of the battery.
The project design life of the proposed grid-scale batteries is 20 years. Regular inspections and maintenance of the systems will occur throughout the operation of the facility.
The batteries need to be located close to existing infrastructure for ease of connecting to the NS Power transmission system. This provides access to energy from renewable resources anywhere in the system.
These potential sites have been chosen because:
The sites are adjacent to the 138 kV transmission system, necessary to transport electricity from renewable sources.
Nearby substations to each proposed site are needed to convert distributed electricity to different voltages.
Distribution across the province for grid and localized community benefits.
