Mining companies buy electricity in volumes up to the consumption of a certain amount of power every month. These prices take into account seasonal price changes. I don’t think it’s possible to conclude such an agreement for several months. And it takes time to connect large capacities for mining.
I do not think that this is what is happening now. This data was correct when most of Bitcoin was mined in China, and at that time miners used to transport mining equipment to Sichuan during the rainy season, and when energy prices rose again, they returned to coal-based generation. Things have changed a lot and no. I wonder if there is a country that currently has this feature.
Problems associated with transporting equipment create many problems. For example, after moving, 20-30% of my equipment does not work and I have to assemble and disassemble, clean and then monitor the correct operation of the mining equipment.