The discussion on a major bitcoin mine at the Bitcoin mining discussion "Three months living in a multi-petahash BTC mine in Kangding, Sichuan, China" gives the price they are paying for electricity as RMB 0.2 per kWh or about $USD 0.03 per kWh. That is really cheap and cheaper then anywhere I know in North America. The thread is definitely worth a read if interesting in mining in China.
http://cointelegraph.com/news/114474/inside-a-tibetan-bitcoin-mine-the-race-for-cheap-energyThis article about the same mine says $0.045/kwh. Either way, $0.03/kwh is not the cheapest. There are places in North America/Europe with power at ~$0.02/kwh.
China has extensive hydro power but much of it is a long way from the cities. Chinese Bitcoin miners are able to get cheap access to to this power by locating near the dams. This is similar to the reason KNC in Sweden is located near hydro power.
The difference is that in China they have to move their farms out in the middle of nowhere, completely away from any cities, whereas in Europe/America they can set up mines near or in cities.
I don't think the OP is planning on moving to some desolate mountain in Tibet just to set up a mine with a few KW. Sounds like he thought electricity all over China is ultra cheap when it's really not.