Fig. 5From: Climate factors influencing effective use of geothermal resources in SE Poland: the Lublin troughsource was assessed to be about 62% of nominal heat demand (according to Eq. 2 criterion)Normalised heat demand duration curve. The filled areas represent demand covered by geothermal heat source (solid green) and peak heat source (dashed red). The cut-off value for geoDH peakBack to article page