The ease of installation and a potent mix of government policies to encourage adoption has made the wee arrays hugely popular. More than 550,000 of them dot cities and towns nationwide, half of which were installed in 2023. During the first half of this year, Germany added 200 megawatts of balcony solar. Regulations limit each system to just 800 watts, enough to power a small fridge or charge a laptop, but the cumulative effect is nudging the country toward its clean energy goals while giving apartment dwellers, who make up more than half of the population, an easy way to save money and address the climate crisis.

Of course, there's only so much that panels like these can produce. By some estimates, a "large well-positioned balcony" might only produce 15% of a home's electricity needs. But hey, that's still something, and it seems like something that Toronto should be looking at.

We also have balconies.