Here are the hourly prices in Denmark, without taxes and other charges which are about 1.6DKK/kWh. If you go forwards and backwards, you can see the price has varied/will vary from about 1kr to 4.5kr, plus tax, or 35¢ to 81¢. Car chargers can be set to charge at the cheap times, and things like dishwashers and washing machines have delay timers for people who want to run them at the cheaper times.

Straightforward day/night electricity rates have existed for decades, hourly rates are more recent, and optional.

100¢/kWh has happened in the last month, but only at a peak period. I'm not sure how long or how often it happened.

1.00DKK = 0.14USD

https://andelenergi.dk/kundeservice/aftaler-og-priser/timepr...

Depending on the day and hour of the day, yes. At least here in Denmark.

Here in downtown San Jose it’s around $0.75/kWh