Last year when I went to Disney, I had asked one of the cast members there and she said that she really wasnt sure but she thought there had to be over 50,000 people who work for disney. Walt Disney World Employees.
Methane is just used as a fuel for a gas turbine (can also be used to drive an internal combustion engine coupled to a generator). The turbine is coupled to a generator, which generates electricity.
The pressurized steam turns the turbine, which makes electricity. Coal, oil, natural gas, nuclear energy, and wood waste are used to generate electricity in this way. Moving water is funnelled into a turbine, making it turn. The turbine then generates electricity. Most electricity generated in this way comes from hydro-electric dams. These dams hold water back in a reservoir behind a large wall, usually made of concrete.