Before revision: The economic concept of monetary standard of currencies is reviewed in a classical physics standpoint. Are analyzed the physical characteristics of the material elements used to represent value and how the energy matrix of an economy can play an important role in the sustained growth, through the adoption of a new monetary standard, based on the energy supply capacity .
After revision: Regardless of the material elements used to represent value and how the energy matrix of an economy can play an important role in the sustained growth, through the adoption of a new monetary standard, based on the energy supply capacity .