[accord1999]

The thing is peak solar generation is noon in the summer but peak electricity demand is usually in the late afternoon to mid evening. And in a lot of places, winter electricity usage is also higher than summer usage (and definitely higher than spring and autumn).

So a rate that doesn't float with time of day is actually beneficial to solar owners because they generate electricity when demand is relatively low but buy it back when demand is relatively high. But ultimately, the real problem with solar is that other than using hydro, there's no cost effective way to store electricity. In the example they produce a lot of excess electricity in the summer but run a huge deficit in December. A single homeowner benefits from having Enmax as a very reliable battery to overcome this problem, but it's much harder at the utility level.