Electrify industrial heat without constraints.
FeX converts electricity into sustained, high-temperature industrial heat using iron-based thermochemical storage. Modular. Energy-dense. Built for constrained sites.
Most electrification infrastructure wasn’t built for high-temperature industrial heat.
Most storage is optimized for short-duration electricity, not sustained high-temperature output. At industrial scale, these systems degrade with cycling, expand in footprint, and struggle to deliver multi-day reliable thermal energy.
Electrification infrastructure engineered for constrained industrial sites.
Containerized, modular systems delivering sustained high-temperature heat and firm power over days and weeks, with rapid deployment and scalable architecture built for real industrial sites.
Continuous High-Temp Heat
Industrial-grade process heat up to 900°C. Delivered on demand.
Long Duration
Energy stored for multi-hours, days or weeks. Multi-day reliability for the sites that need it.
Compact & Modular
Containerized to scale with demand. Designed for constrained sites.
Heat & Power Delivery
Flexible on demand output. Heat first, power when required.
Storing energy in iron. Releasing it as heat.
Electricity converts iron oxide into iron, storing energy in solid form. When exposed to air, the reaction reverses and releases sustained high-temperature heat.
Charge
Low-cost electricity converts iron oxide into iron, storing energy in solid form.
Store
Energy remains stored without degradation for days, weeks, and months.
Dischage
Iron reacts with air to deliver continuous, high-temperature heat for operations.
Up to 900°C
Output temperature
35+ MWh
Per container
Multi-day
Storage duration
~$0.05/kWh
Target LCOS
Where conventional electrification falls short
Built for sites where heat, duration, and reliability are non-negotiable.
A structured path to first deployment.
Deploy on-site. Validate under real heat loads. Generate bankable performance data to support scale-up decisions
Pilot deployment currently underway with support from: Financed by Government of Canada
Evaluate Performance
Assess system performance under real operating conditions.
Gather Data
Collect operational insights to inform deployment decisions.
Planning & Scale-up
Use validated results to define your deployment strategy.
Frequently Asked Questions
What is FeX Energy?
FeX Energy is a Canadian clean tech company developing an iron-based thermochemical energy storage solution. Its Iron Arc Reactor converts electricity into sustained high-temperature heat, stored in solid iron and released on demand, for industrial, remote, and grid-constrained sites where conventional electrification falls short.
What problem does FeX Energy solve?
Most electrification infrastructure was designed for electricity delivery, not sustained high-temperature heat. FeX removes energy as a binding constraint for industrial operators, replacing volatile fuels or diesel dependence, bypassing grid upgrade requirements, and delivering firm process heat at temperatures up to 900°C, stored for days.
How is iron-based energy storage different from lithium-ion batteries?
Lithium-ion batteries are optimized for short-duration electricity delivery. FeX's iron-based system is designed for multi-day thermal storage at industrial temperatures. It has roughly 1/10th the physical footprint of a comparable lithium-ion installation, no capacity degradation over charge cycles, and a target levelized cost of around $0.05/kWh, well below what batteries can achieve for heat applications.
What temperature does the FeX system deliver?
The Iron Arc Reactor delivers output temperatures up to 900°C, making it suitable for high-temperature industrial processes including drying, calcination, steam generation, material production, and food processing - applications where lithium-ion and most thermal storage alternatives cannot compete.
How does FeX Energy's Development Partnership program work?
FeX offers a structured first-deployment program in partnership with federal funding partners and other industrial customers. The pilot validates system performance under real operating conditions on a dedicated site, generates operational data to inform scale-up decisions, and provides a bankable foundation for full deployment planning.
Who are FeX Energy's target customers?
FeX serves industrial operators, remote mining sites, campuses and district energy networks, and defense or dual-use applications, anywhere that reliable high-temperature heat is required and fuel volatility or environmental impacts, grid constraints, or peak pricing create a binding operational problem.
Where is FeX Energy based and what is the technology's origin?
FeX Energy's technology was developed out of McGill University's Alternative Fuels Laboratory under Professor Jeffrey Bergthorson, following over fifteen years of research into iron-based thermochemical energy storage. The company was founded to bring that research into commercial energy systems.
Ready to remove energy as the constraint?
Whether you’re evaluating a site, exploring a pilot, or assessing FeX for your portfolio, we’re ready to talk.
Iron-based energy storage delivering firm heat and power on demand.