I didn't get to bid in an auction. Providers bid until they had enough then the price was fixed based on the most expensive source.
We also designated a windy chunk of government land next to my city to private wind energy. Besides land it needed a bit of subsidee to spin them up.
Big turbines happened that provide enough power to run the city.
Not that the city didn't have the money to do it themselves. Its dwellers could also easily afford it. That's just not how things work around here.
Mysterious actors blew up some pipeline some place in the north and the highest bit went up dramatically.
It didn't fail, people just couldn't pay their bills anymore.
The market was very good at increasing profit when demand was larger than supply.
One could imagine worse circumstances with a larger effect.