“The methane is not processed, just burnt. It is a dirty fuel and the engines require constant maintenance.”
I see that this produces 50 Hz power. China uses 50 Hz power. They won’t care how dirty it is.
That was just the first link I found.
There are versions with 60hz as well.
When I said it was a “dirty fuel” I meant that there are impurities in the fuel that foul the engine sooner. It is “all natural” though ;)