You need a lot of ways to store energy, is the problem. Consider the Hornsdale Power Reserve- the big set of Tesla batteries in Australia that everyone uses as

You need a lot of ways to store energy, is the problem. Consider the Hornsdale Power Reserve- the big set of Tesla batteries in Australia that everyone uses as an example of storage working. Very successful project. Storage for 129 MWh of energy. Ontario's baseline need for energy, at the dead of night, is 11GW. This means you would need 85 of those facilities to handle just one hour where there's no wind (nor sunlight, given it's night time). In the winter, we have 15 hours of night per day in this province, so we need nearly 1300 of those facilities. And that's very dense energy storage. Others have proposed pumped-water, which is actually a great fit given the number of dams we have, but is a problematic choice during times of drought when there's simply no water to pump (which are more and more common because of climate change). This is made worse when drought correlates with hot days when everyone wants to use their air conditioner. To me, the ideal solution is a baseline of nuclear, along with solar + wind + batteries.