use of fossil fuel or burning of garbage is highly undesirable as is well known.
This is not because there is a limited supply.It is likely that when the fuel oil was created, it took away with it substantial quantity of heat from the atmosphere and helped in bringing down atmospheric temperature.It is a storehouse of excess heat.Why dig it out? Same thing with garbage and trees.What we need is converting heat into a form that is harmless( for the monkind.?).
We have to have a budget for conservation of heat-energy.One way could be to get rid of excess heat by means of radiation to the outer space.Perhaps this is possible by making use of containers with outer face blackened.(heat absorbant surface).