Renewable energy in our own graveyards!

Because of the growing population we are running out of land for people to inhabit, graveyards take up a lot of space and are filled with renewable energy resources, we should impliment a new system that allows us to morne our dead and then burn their bodies for energy. This will rid us of the need for graveyards and thus make more room for the living while ensuring that our physical bodies are put to good use.