  We consider a Statistical Mechanics approach to granular systems by following
the original ideas developed by Edwards. We use the concept of ``inherent
states'', defined as the stable configurations in the potential energy
landscape, introduced in the context of glasses. Under simplifying assumptions,
the equilibrium inherent states can be characterised by a configurational
temperature, $1/\beta$. We link $\beta$ to Edwards' compactivity and address
the problem of its experimental measure. We also discuss the possibility to
describe the time dependent distribution probability in the inherent states
with an appropriate master equation.
