A Solar Solution Built for the North
Most floating solar arrays are engineered for warm-weather countries where lakes never freeze over. But Canadian designers are tackling a much trickier problem: how do you keep solar panels floating — and functioning — on a lake that turns into a sheet of ice every winter?
According to a new feature from CBC's environmental newsletter What on Earth, Canadian engineers have come up with a "bubbly" floating solar concept designed specifically to withstand the freeze-thaw cycles that would crush or capsize conventional floating solar platforms. The design uses buoyant, flexible components that can shift and adapt as ice forms, expands, and eventually breaks apart in the spring — rather than fighting against those forces and cracking under pressure.
Floating solar, sometimes called "floatovoltaics," has taken off in countries like China, India, and the Netherlands, where solar panels are mounted on pontoons and anchored on reservoirs, ponds, and quarry lakes. The appeal is straightforward: it keeps solar development off valuable land, and water actually helps cool the panels, which can boost efficiency. The catch, until now, has been winter. Canada has thousands of freshwater lakes and reservoirs that could theoretically host floating solar farms if someone solved the ice problem — and this new design is aimed squarely at that gap.
Toronto's World Cup Cycling Boost
The same roundup highlights how Toronto used the lead-up to the 2026 FIFA World Cup as an opportunity to get more people cycling instead of driving. With the city expecting a crush of visitors and matches at BMO Field, Toronto planners leaned into expanded cycling infrastructure to help ease pressure on roads and transit — a strategy municipalities across Ontario, including Ottawa, have increasingly looked to as a low-cost way to manage congestion during major events and beyond.
It's a reminder that Ontario cities are often the proving ground for climate and transportation ideas that later spread nationally. Ottawa has run its own versions of this playbook, closing sections of the Rideau Canal Eastern Pathway and other routes to car traffic during peak events like Bluesfest and Winterlude weekends.
Turning Data Centre Heat Into a Resource
Rounding out the newsletter, researchers are exploring how the enormous amount of heat generated by data centres — which power everything from cloud storage to AI tools — could be captured and redirected to warm nearby homes and buildings instead of being wasted. As data centre construction ramps up across Canada, including projects proposed in Eastern Ontario, this kind of heat-recycling technology could eventually factor into how new facilities are designed and where they're built.
Together, the three stories point to a common thread: Canadian innovators are finding practical, homegrown fixes to the specific challenges of a cold climate, rather than simply importing solutions built for milder parts of the world.
Source: CBC News — What on Earth newsletter
