Heinberg: Energy limits to growth: integrating energy sources – part III

A process for designing the energy system to meet society’s future needs must start by recognizing the practical limits and potentials of the available energy sources. Since primary energy sources will be the most crucial ones for meeting those needs, it is important to identify those first, with the understanding that secondary sources will also play their roles, along with energy carriers (forms of energy that make energy from primary sources more readily useful


* It must be capable of providing a substantial amount of energy