Objective of this paper is to provide International Recommendations for
Energy Statistics (IRES) with suggested definition of renewable and nonrenewable energy grouping and relevant discussion that could be used in updated energy statistics manual. Second objective is to give a short literature overview with relevant definitions and argumentation. Suggestion on how renewable energy forms and corresponding transformation should be reflected in “basic” energy statistics and energy balances are largely outside of the scope of this paper.
Why is it important to introduce categorization based on renewable versus non-renewable energy?
Historically renewable energy was first energy humankind used. Going from use of fuelwood as a source of cooking and providing heat to using wind energy for transportation and later as a source of mechanical energy in first machinery renewables played absolutely essential role for development in preindustrial time.
It hard to say for sure when and in what source grouping renewables/nonrenewables was introduced (my colleagues from IAEA library did not finished research on that topic yet), but most probably it become widely used around
1973-1975 as outcome of the work on energy security issues and sustainability. There is clearly more than one reason to introduce such categorization
“do we have sufficient energy resources?” and energy security. Also from scientific point of view all energy sources we know within a defined system
(Earth) are finite some energy, for example energy obtained from fusion process, could be considered practically inexhaustible. Some energy sources have limited quantities and occurrence (fossil fuel, uranium) and could be depleted. Other, coming from nature, like solar radiation and mechanical energy produced by gravitational interactions in system EarthMoon are limited in their flow/flux but