Merge pull request #1927 from fschreyer/hydrogen

remove standard lower bounds on bioh2 capacity additions before 2030 to avoid potential infes with low capacity bounds in 2030

core/bounds.gms

@@ -310,10 +310,12 @@ vm_cap.up("2025",regi,"elh2","1")= 20 * pm_eta_conv("2025",regi,"elh2")*pm_gdp("
 
 *** bounds on biomass technologies
 *' set upper bounds on biomass gasification for h2 production, which is not deployed as of 2025
-*' set maximum of 0.1 EJ/yr production by 2030 for each technology
+*' allow for small production of 0.1 EJ/yr at by 2030 for each technology globally, distributed to regions by GDP share
 vm_cap.up("2030",regi,"bioh2","1")= 0.1 / 3.66 * 1e3 / 8760 * pm_gdp("2030",regi) / sum(regi2,pm_gdp("2030",regi2));
 vm_cap.up("2030",regi,"bioh2c","1")= 0.1 / 3.66 * 1e3 / 8760 * pm_gdp("2030",regi) / sum(regi2,pm_gdp("2030",regi2));
-
+*' allow zero vm_deltaCap for bio-H2 up to 2030 to be consistent with above bounds
+vm_deltaCap.lo(t,regi,"bioh2","1")$(t.val le 2030) = 0;
+vm_deltaCap.lo(t,regi,"bioh2c","1")$(t.val le 2030) = 0;
 
 *** fix capacities for advanced bio carbon capture technologies to zero in 2020 (i.e. no BECCS in 2020)
 vm_cap.fx("2020",regi,te,rlf)$(teBio(te) AND teCCS(te)) = 0;