make sure DC transmission projects appear in the correct year

config/config.yaml

@@ -4,7 +4,7 @@
 
 # docs in https://pypsa-eur.readthedocs.io/en/latest/configuration.html#run
 run:
-  prefix: 202417mergetag013
+  prefix: 240918_nep_DC
   name:
   # - CurrentPolicies
   - KN2045_Bal_v4
@@ -184,7 +184,7 @@ lines:
 
 # docs in https://pypsa-eur.readthedocs.io/en/latest/configuration.html#enable
 enable:
-  retrieve: true # set to false once initial data is retrieved
+  retrieve: false # set to false once initial data is retrieved
   retrieve_cutout: false # set to false once initial data is retrieved
 clustering:
   # simplify_network:
@@ -612,3 +612,10 @@ must_run_biogas:
   enable: false
   p_min_pu: 0.6
   regions: ['DE']
+
+transmission_projects:
+  new_link_capacity: keep #keep or zero
+
+onshore_nep_force:
+  cutin_year: 2020
+  cutout_year: 2030

workflow/Snakefile

@@ -36,6 +36,7 @@ resources = path_provider("resources/", RDIR, policy, exclude)
 
 RESULTS = "results/" + RDIR
 
+
 module pypsaeur:
     snakefile:
         "submodules/pypsa-eur/Snakefile"
@@ -232,6 +233,7 @@ rule modify_prenetwork:
         land_transport_electric_share=config_provider(
             "sector", "land_transport_electric_share"
         ),
+        onshore_nep_force=config_provider("onshore_nep_force"),
     input:
         network=RESULTS
         + "prenetworks-brownfield/elec_s{simpl}_{clusters}_l{ll}_{opts}_{sector_opts}_{planning_horizons}.nc",
@@ -458,6 +460,7 @@ rule export_ariadne_variables:
         energy_totals_year=config_provider("energy", "energy_totals_year"),
         co2_price_add_on_fossils=config_provider("co2_price_add_on_fossils"),
         co2_sequestration_cost=config_provider("sector", "co2_sequestration_cost"),
+        post_discretization=config_provider("solving", "options", "post_discretization"),
     input:
         template=resources("template_ariadne_database.xlsx"),
         industry_demands=expand(