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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.   "