Definition a source that draws on finite resources which will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve Reference "National Renewable Energy Laboratory http://www.nrel.gov/learning/re_basics.html (01.09.2008)"
Definition 1.Non-renewable resources have been built up or evolved over a geological time-span and cannot be used without depleting the stock and raising questions of ultimate exhaustibility, since their rate of formation is so slow as to be meaningless in terms of the human life-span. Reference 1.GOOD;
Definition "non-renewable primary energy from an on-site, nearby or distant energy source that is delivered via a given energy carrier, including the delivered energy and the calculated energy overheads of delivery to the points of use, divided by the delivered energy" Reference "COM-EN, based on: Proposal for a Directive on the energy performance of buildings (recast), COM/2021/802 final"
Definition 1.A natural resource which, in terms of human time scales, is contained within the Earth in a fixed quantity and therefore can be used once only in the foreseeable future (although it may be recycled after its first use. This includes the fossil fuels and is extended to include mineral resources and sometimes ground water, although water and many minerals are renewed eventually. Reference 1.ALL;
Definition a natural resource that can be used up completely or else used up to such a degree that it is economically impractical to obtain any more of them Reference Monds,Water Primer:Gloss.of Terms,1995,Government of Canada
Definition ressource naturelle épuisable(par exemple ressource minérale)qui ne peut pas être régénérée une fois exploitée Reference Glossaire des statistiques de l'environnement,Département de l'information économique et sociale et de l'analyse des politiques,1997,Nations Unies,New York