Your fire department, sheriff and insurance company won't like it.
You may be denied a claim if you have a fire. The fire department
may not try to save your house if they find out.

You can only store 20lbs of smokeless gun powder in one place in
a residence in most locals, and it is less flammable than gas.

Take your money and invest it in one of the energy companies
making record profits on the sale of gas.