Yes, any landfill of any size is going to clean this up a bit and run it through a generator. They can get contracts from the utility to use so much power per week (whatever the tank capacity iso and since the utility controls when it is on (that is when other renewables are low) they get a higher price. The details are complex, but thus is very valuable green renewable (we can debate how green and renewable eslewhere) energy to a utility.

At some sites, the methane is burned in gas engine to generate electricity. Some sites build a CHP and resales the heat for district heating. The engines may need more maintenance due to silicate in the gas.