Batting 1,000 with Solar in Alberta and Geothermal in Ontario
With every home we build, Mattamy is committed to reducing its carbon footprint, enhancing energy efficiency and making home ownership more affordable. We have built more than 1,000 homes in Alberta with solar panels, and in Ontario we have built 1,000 homes with geothermal systems. These two milestones involved different approaches, reflecting our belief that there is no one-size-fits-all solution and that strategies must be tailored to local market needs.
In Alberta, Canada’s sunniest province, which averages more than 312 sunny days each year, Mattamy has made solar panels a standard feature on most homes we have built, starting in June 2024. On April 21, 2026, we were proud to announce that we had built more than 1,000 across the province with solar panels.
Mattamy’s decision is generating meaningful environmental and financial benefits. Our homeowners are collectively saving an estimated $460,000 annually in energy costs while reducing carbon emissions by about 3,200 tonnes each year.1 Over 30 years, that is expected to total nearly 100,000 tonnes of emissions avoided.1
“Our commitment to building better communities means finding practical ways to reduce environmental impact while delivering real value to homeowners,” said Collin Campbell, President of Mattamy’s Alberta Division. “By making solar a standard feature in Alberta, we are ensuring every Mattamy homeowner in the province benefits from lower energy costs and a more sustainable home.”
In Ontario, geothermal systems provide an excellent year-round option for reducing the emissions and costs associated with heating and cooling. We built our first geothermal home at our Springwater development in Markham. From there, geothermal communities have expanded across Oakville, Markham, Pickering and Ottawa.
Initially, geothermal systems relied on large district infrastructure with extensive coordination, municipal approvals and complex installation requirements. Over time, the approach has shifted toward individual borehole systems for each home, allowing teams to improve flexibility, efficiency and construction timelines.
“There was definitely a learning curve in the beginning, but our team stayed committed and kept building confidence with every home,” said Frank Trotta, Senior Builder, Greater Toronto Area. “Looking at where we started in Phase 1 of Springwater to now reaching 1,000 geothermal homes, it’s something everyone involved should be proud of.”
Today, Mattamy has one of the largest geothermal portfolios in North America. In addition to 1,000 low-rise geothermal homes, it also includes more than 1,500 geothermal mid-rise units.
The success of these initiatives highlights Mattamy’s position as a sustainability leader in the homebuilding industry, and further reinforces the connection between sustainable building practices and lasting homeowner value.