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Ladislaus Rybach, ETH Zurich

Subject: Comments to Draft Specifications for Application of UNFC-2009 to Geothermal Energy Resources: from Ladislaus Rybach, Professor Emeritus, Institute of Geophysics, ETH Zurich
1 August 2016

I already commented on version 1 February 2016.
This version is highly welcome and needed help to fix geothermal resource estimation results of specific projects in the 3D coordinate system (E, F, G axes) of UNFC-2009.
However, at this occasion it needs to be emphasised that a uniform and generally accepted, reasonable and reliable resource estimation method does not exist so far.
Without a standard method the assignment of results of specific cases to the UNFC-2009 E-F-G axes system could remain vague.

Comments from Ladislaus Rybach, Professor Emeritus, Institute of Geophysics, ETH Zurich, to Draft Specifications for Application of UNFC-2009 to Geothermal Energy Resources.