Why sodium-ion is the default for grid-scale
Sodium-ion has become the standard chemistry for stationary grid applications because of its thermal stability, cycle life and cost trajectory. For a four-hour asset cycling daily for two decades, degradation behaviour and safety margins matter more than volumetric energy density.
Canadian Energies is developing 5 GW of grid-scale sodium-ion BESS manufacturing capacity in Chatham-Kent, alongside 2 GW of battery cell manufacturing capacity.
Model augmentation before you sign
Storage assets lose usable capacity over time. A contract that guarantees nameplate at year one and says nothing about year ten transfers the entire degradation risk to the owner.
Insist on a capacity maintenance plan with modelled augmentation volumes, priced options and a defined measurement protocol.
- Guaranteed usable energy by year, not just at commissioning.
- Augmentation pricing locked or indexed, with a supply commitment.
- Agreed capacity test methodology and acceptance tolerances.
Interconnection is the long pole
In most Ontario projects the interconnection study queue, not the equipment, sets the in-service date. Siting near existing transmission and industrial load, and engaging the transmitter early, compresses the schedule far more than shaving weeks off delivery.
Co-locating storage with manufacturing and data centre load, as the Chatham-Kent campus does, turns a grid constraint into an anchor for behind-the-meter value.
Domestic supply and trade compliance
Storage procurement now carries trade-compliance conditions that did not exist five years ago. Buyers increasingly need to show that battery supply chains satisfy CUSMA rules and foreign-entity-of-concern restrictions to preserve incentives and market access.
A North American manufacturing base makes that demonstrable at the bill-of-materials level rather than through paperwork.