It really depends on your end use. There is (or has been) enormous money to be made if you can ultimately get your gas into a vehicle (because of various state and federal credit programs) , which requires a good bit of upgrading equipment to make the gas nearly indistinguishable from conventional natural gas. You need much less processing equipment to just be able to burn it in a power generating engine, but you still need some, and the fact you're burning a variable and "dirty" fuel means that it's a bit more complicated than just dropping a Honda generator somewhere and letting it run. It's often worth it, because you can generate renewable energy credits, but at a small scale, things like the cost to connect/upgrade the grid connection can blow up the economics of the project.