Well, there’s hooking the outflow directly up to a Fuel Cell for electricity like the one sold by Fuelcell Energy, Inc.
They have a couple different types for cesspools and natural gas.
Might be worth looking at.
Same problem described in #8.
The gas still has to be cleaned up before the fuel cell. And low pressure plastic pipe is way cheaper than a Fuel cell and miles distribution lines carrying very, very little electrical power.
If these wells were producing a significant gas supply, they would already be piped up.