** Vulcan Energy Resources VUL.AX rises as much as 6.3% to A$3.71, highest in a week
** Lithium explorer signs heat offtake agreement with German municipal energy supplier, EnergieSüdwest AG (ESW) for the supply of geothermal renewable heat from VUL's Lionheart Phase One Project
** Under the deal, co will supply geothermally-generated heat to various districts in Germany's Landau area for 35 years
** VUL loses 34.8% this year, as of last close
(Reporting by Sherin Sunny in Bengaluru)
((Sherin.Sunny@thomsonreuters.com;))