Comment Tradeoff is non-free times are more expensive (Score 1) 101
So the plans may not be worth it if you cannot shift usage. I was on a free-nights plan in 2018 and was able to drop my bill by 20% vs the regular rate plan by having my Model 3 charge in the middle of the night and by using the delayed start feature on my washer and dishwasher.
I moved off the free-nights plan in 2019 after installing solar and switched to a net-metering plan, which was awesome.
The net metering plan's now gone. My current plan has time-of-use rates of $0.127/kWh from 6pm-9pm, $0.09/kWh all other times, and I get paid market rates for excess solar. Market rates aren't worth as much as net-metering, so I charge up a Powerwall during the day and run the house with it from 6pm-9pm. I also have my Model 3 configured to charge only on excess solar, which works well for me because I work from home.