You can now opt out of Time-of-Use Pricing

If you’re a residential or small business customer that pays Time-of-Use (TOU) electricity prices, you can choose to switch to Tiered prices beginning November 1, 2020. 

To switch from TOU to Tiered prices, you must notify your utility by completing an election form. You must contact your utility or visit their website for the election form.

If you want to continue paying TOU prices, no action is required. 

https://www.oeb.ca/rates-and-your-bill/electricity-rates/choosing-your-electricity-price-plan


Of course, most economic will depend both quantity and time-of-use.
And, it seems also time of year...

https://www.oeb.ca/newsroom/2020/ontario-energy-board-sets-new-electricity-prices-households-and-small-businesses