Add endogenous export

Snakefile

@@ -1152,6 +1152,8 @@ rule add_export:
         store=config["export"]["store"],
         store_capital_costs=config["export"]["store_capital_costs"],
         export_profile=config["export"]["export_profile"],
+        export_endogenous=config["export"]["endogenous"],
+        endogenous_price=config["export"]["endogenous_price"],
         snapshots=config["snapshots"],
         costs=config["costs"],
     input:

config.default.yaml

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
-version: 0.4.1
+version: 0.4.2
 tutorial: false
 
 logging:
@@ -456,10 +456,12 @@ fossil_reserves:
   oil: 100 #TWh Maybe redundant
 
 export:
-  h2export: [10] # Yearly export demand in TWh
+  endogenous: false # If true, the export demand is endogenously determined by the model
+  endogenous_price: 400 # EUR/MWh # Market price, for wich the hydrogen for endogenous exports is sold. Only considered, if ["export"]["endogenous"] is set to true.
   store: true # [True, False] # specifies whether an export store to balance demand is implemented
   store_capital_costs: "no_costs" # ["standard_costs", "no_costs"] # specifies the costs of the export store. "standard_costs" takes CAPEX of "hydrogen storage tank type 1 including compressor"
-  export_profile: "ship" # use "ship" or "constant"
+  h2export: [10] # Yearly export demand in TWh. Only considered, if ["export"]["endogenous"] is set to false
+  export_profile: "ship" # use "ship" or "constant". Only considered, if ["export"]["endogenous"] is set to false
   ship:
     ship_capacity: 0.4 # TWh # 0.05 TWh for new ones, 0.003 TWh for Susio Frontier, 0.4 TWh according to Hampp2021: "Corresponds to 11360 t H2 (l) with LHV of 33.3333 Mwh/t_H2. Cihlar et al 2020 based on IEA 2019, Table 3-B"
     travel_time: 288 # hours # From Agadir to Rotterdam and back (12*24)

config.tutorial.yaml

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
-version: 0.4.1
+version: 0.4.2
 tutorial: true
 
 

doc/release_notes.rst

@@ -30,6 +30,8 @@ E.g. if a new rule becomes available describe how to use it `make test` and in o
 
 * Enable sector rules import in subworkflow `PR #1178 <https://github.com/pypsa-meets-earth/pypsa-earth/pull/1178>`__
 
+* Include option of endogenous export, which optimizes the export quantity based on price signals `PR #1201 <https://github.com/pypsa-meets-earth/pypsa-earth/pull/1201>`__
+
 **Minor Changes and bug-fixing**
 
 * The default configuration for `electricity:estimate_renewable_capacities:year` was updated from 2020 to 2023. `PR #1106 <https://github.com/pypsa-meets-earth/pypsa-earth/pull/1106>`__

scripts/add_export.py

@@ -129,14 +129,27 @@ def add_export(n, hydrogen_buses_ports, export_profile):
     elif snakemake.params.store == False:
         pass
 
-    # add load
-    n.add(
-        "Load",
-        "H2 export load",
-        bus="H2 export bus",
-        carrier="H2",
-        p_set=export_profile,
-    )
+    if snakemake.params.export_endogenous:
+        # add endogenous export by implementing a negative generation
+        n.add(
+            "Generator",
+            "H2 export load",
+            bus="H2 export bus",
+            carrier="H2",
+            sign=-1,
+            p_nom_extendable=True,
+            marginal_cost=snakemake.params.endogenous_price * (-1),
+        )
+
+    else:
+        # add exogenous export by implementing a load
+        n.add(
+            "Load",
+            "H2 export load",
+            bus="H2 export bus",
+            carrier="H2",
+            p_set=export_profile,
+        )
 
     return
 

test/config.test_myopic.yaml

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
-version: 0.4.1
+version: 0.4.2
 logging_level: INFO
 tutorial: true
 
@@ -69,10 +69,12 @@ fossil_reserves:
 
 
 export:
-  h2export: [120] # Yearly export demand in TWh
-  store: true # [True, False] # specifies wether an export store to balance demand is implemented
-  store_capital_costs: "no_costs" # ["standard_costs", "no_costs"] # specifies the costs of the export store "standard_costs" takes CAPEX of "hydrogen storage tank type 1 including compressor"
-  export_profile: "ship" # use "ship" or "constant"
+  endogenous: false # If true, the export demand is endogenously determined by the model
+  endogenous_price: 400 # EUR/MWh # Market price, for wich the hydrogen for endogenous exports is sold. Only considered, if ["export"]["endogenous"] is set to true.
+  store: true # [True, False] # specifies whether an export store to balance demand is implemented
+  store_capital_costs: "no_costs" # ["standard_costs", "no_costs"] # specifies the costs of the export store. "standard_costs" takes CAPEX of "hydrogen storage tank type 1 including compressor"
+  h2export: [120] # Yearly export demand in TWh. Only considered, if ["export"]["endogenous"] is set to false
+  export_profile: "ship" # use "ship" or "constant". Only considered, if ["export"]["endogenous"] is set to false
   ship:
     ship_capacity: 0.4 # TWh # 0.05 TWh for new ones, 0.003 TWh for Susio Frontier, 0.4 TWh according to Hampp2021: "Corresponds to 11360 t H2 (l) with LHV of 33.3333 Mwh/t_H2. Cihlar et al 2020 based on IEA 2019, Table 3-B"
     travel_time: 288 # hours # From Agadir to Rotterdam and back (12*24)