How do I light a lightbulb using methane gas?
Oh, it’s possible. Methane gas contains chemical potential energy, which you have to somehow convert to electricity. Well, how interesting. At the very least, the easiest way to extract useful energy out of methane is to burn it. However, you have to somehow use the heat generated to generate electricity. Try looking at how a coal-fired power plant works. You should probably be able to reproduce the effects, albeit on a much smaller scale, using methane as fuel instead of coal. Problem is, burying trash to get methane is a very slow process. You might even get better results by farting into a bottle… Harvesting methane from buried trash isn’t easy either. If you’re burying the trash in a small enough container, you could try stretching the opening of a balloon over the opening of the container and leaving it for, I dunno, months… I don’t know. The idea is plausible on a large enough scale, where methane gas can be easily obtained (natural gas, anyone?), but on a small scale like a