Question

what percent of the energy used by villagers in our country comes from firewood?​

Answer 1

A standard cord of well-seasoned hardwood (stack of wood 4'X 4'X 8' or 128 cubic feet) contains the heat equivalent of about 20 million BTU's. By way of comparison this is more or less equivalent to the heat value in 145 gallons of #2 fuel oil or 215 gallons of LP gas.