This has triggered a component price war which, in conjunction with the aforementioned technical progress, has substantially lowered the per-MW price of installed capacity. The counterexample would be Chile, where, despite investor interest, the functioning of the electricity market does not make it possible to put forward projects that banks could finance. The cornerstones are long-term contracts that guarantee an income to the generator and considerably facilitate project financing, together with mechanisms that make it possible to cushion the variability of energy production. In Mexico, this has been achieved through the energy bank, whereas in Brazil, the variability of supply is assumed by all generators through a reliability charge.