I doubt that is even 95%, maybe around 75-80%. Most of them build farms on locations where electricity is very cheap.You should also take account on the model of hardware miners they mostly have on mining bitcoin, once they reached that halving they are already mining at a lost.
Absolutely right! Miner, use less efficient equipment, they will be forced to leave the network, when the rewards will fall.
Many Chinese Bitcoin-mines are located in the mountainous regions of Tibet and Sichuan, where the climate is favorable for mining, and hydroelectric power is cheap, especially during the rainy season. The system of informal relations between Chinese businessmen, officials and the owners of power plants, known as Guangxi, Miner helps to achieve the best prices for electricity. Bitcoin-summer Chinese computers are often cooled by a huge fan. Sometimes water is used not only as a source of electricity, but also as a cooling system.
