whatever one calls it all energy available to man other than nuclear fission or fusion fission includes geothermal ultimately derives from the sun currently or in the distant past solar energy from the distant past became stored in fossil fuels and is utilized by man via one or another technique of mining followed usually by combustion that energy which is not so stored and which can be obtained without mining its source that is in more or less real time used roughly at the same rate as it becomes available is the subject of this article i do not think that it is all that constructive to parse definitions quite so acutely as is being done for example in this talk section the concept needs a clear unambiguous name acceptable to both lay and professionals say real time non mined but that is a bit clumsy to say the least rtnm no i don't think so not clear maybe there is a good german word to fit the bill a charged word like lebensraum or realpolitik which at least suggest their meanings to at least some degree