How much energy does it take to produce it? How much usable energy is produced by this?
Is the energy density higher than that of gasoline?
It is Natural Gas, methane. It is trapped in an ice latice, frozen water. It only has to be warmed to be released, but the capture can be more difficult depending on the location.
In Arctic, (and I assume the Anarctic) a very large amount lies near the permafrost layer.
It definitely produces more energy than it requires to release, but it cost more to produce than our existing natural gas resources already in production.