Powering Canada’s Future: A Landmark Geothermal Alliance Between Diverso Energy and Mattamy Homes
By Robert Buluma , August 2025
Imagine a neighbourhood where homes stay comfortably warm in winter and refreshingly cool in summer—without relying on gas or expensive HVAC systems. Welcome to the new era of sustainable Canadian homebuilding, powered by a groundbreaking partnership between Diverso Energy and Mattamy Homes.
What’s the Big News?
Diverso Energy, a trailblazer in geothermal Energy-as-a-Service (EaaS), has joined forces with Mattamy Homes, one of North America’s largest privately-owned homebuilders, in a national joint venture to bring geothermal technology into select residential projects across Canada.
Diverso will now be the exclusive provider of geothermal heating and cooling to Mattamy developments—from single-family homes and townhouses to mid-rise and high-rise multi-unit buildings.
Why It Matters: Sustainable, Scalable, Smart
This partnership ushers in a scalable, emissions-free model for home heating and cooling—without extra costs to homebuyers.
- Cost-neutral sustainability: Diverso’s EaaS model removes upfront capital cost and integrates a turnkey, vertically integrated solution—including design, installation, and operation—at no additional project cost.
- Enhanced homeowner experience: Fully electrified geothermal systems offer whisper-quiet operation, no bulky HVAC units, and more outdoor deck space.
- Environmental gains: Mattamy aims for a 10% reduction in greenhouse gas emissions from homes sold in 2025 compared to code-built homes—a 31% reduction versus 2005/06 resale homes.
Building on Existing Momentum
This isn’t just a standalone achievement—it builds upon earlier successes like the geothermal community pilot in Markham’s Berczy Glen, where Enwave Energy, Mattamy Homes, and municipal partners delivered a 312-home net-zero neighbourhood funded in part by federal support.
The Go-Forward Vision
Under this venture:
- Diverso acquires Mattamy’s existing geothermal assets in over 2,000 housing units, whether occupied or under development.
- The strategy prioritizes low-rise housing—a sector that's cost-sensitive—by making geothermal integration seamless, affordable, and scalable.
- While initial rollout focuses on Ontario, the JV sees potential expansion into other provinces and possibly the U.S., though that’s a longer-term ambition.
Learning from the Pros: Insights Shared
For a deeper dive into the strategy, leaders Tim Weber (Diverso) and Pawan Subherwal (Mattamy) have shared key lessons—including how to align geothermal design with development economics, streamline rollout, and deliver long-term benefits to homeowners.
Why This Partnership Matters
| Benefit Area | Details |
|---|---|
| Environmental Impact | Large-scale deployment of geothermal systems can significantly reduce GHG emissions. |
| Affordable Innovation | EaaS model minimizes cost barriers—no upfront charges and better economies of scale. |
| Homeowner Value | Quiet, efficient systems with more space and comfort. |
| Industry Leadership | Sets a new standard in sustainable homebuilding for other developers to follow. |
Final Thoughts
The Diverso–Mattamy partnership marks a turning point in Canadian residential development by demonstrating that zero-emission, geothermal-powered communities aren’t just a green dream—they’re economically feasible, visually appealing, and ready to be the new norm.
Related: Germany fast-tracks Geothermal policies
As Diverso continues to scale and more communities adopt this model, we may soon look back and see this collaboration as the catalyst that shifted Canada—and perhaps North America—toward a clean, sustainable living future.
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