3 ms·

You can store hydrogen in lower pressures if you don’t care about the amount of space it takes.

• credit_guy 5y ago
  That's a brilliant idea. You could store the hydrogen in some big balloons. There's no buoyancy on the Moon, so you don't need to anchor these balloons. You need to cover them with a dome to protect them from micrometeorites, but when you establish a Moon colony, building domes is the name of the game. At normal (on Earth) room temperature and pressure, a balloon with a radius of 10m holds about 60 kg of hydrogen. I did some back of the envelope calculations, and that would be enough to provide about 2 kW of power for the length of the lunar night (14 days).