Merge pull request #728 from PyPSA/fix-min-capacity-myopic

Fix min capacity myopic
PyPSA · Aug 22, 2023 · 635877b · 635877b
2 parents 1fc83b7 + 46cdf2b
commit 635877b
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diff --git a/doc/release_notes.rst b/doc/release_notes.rst
@@ -14,6 +14,8 @@ Upcoming Release
 
 * For industry distribution, use EPRTR as fallback if ETS data is not available.
 
+* The minimum capacity for renewable generators when using the myopic option has been fixed.
+
 PyPSA-Eur 0.8.1 (27th July 2023)
 ================================
 

diff --git a/scripts/solve_network.py b/scripts/solve_network.py
@@ -51,6 +51,9 @@ def _add_land_use_constraint(n):
     # warning: this will miss existing offwind which is not classed AC-DC and has carrier 'offwind'
 
     for carrier in ["solar", "onwind", "offwind-ac", "offwind-dc"]:
+        extendable_i = (n.generators.carrier == carrier) & n.generators.p_nom_extendable
+        n.generators.loc[extendable_i, "p_nom_min"] = 0
+
         ext_i = (n.generators.carrier == carrier) & ~n.generators.p_nom_extendable
         existing = (
             n.generators.loc[ext_i, "p_nom"]
@@ -67,7 +70,7 @@ def _add_land_use_constraint(n):
     if len(existing_large):
         logger.warning(
             f"Existing capacities larger than technical potential for {existing_large},\
-                       adjust technical potential to existing capacities"
+                        adjust technical potential to existing capacities"
         )
         n.generators.loc[existing_large, "p_nom_max"] = n.generators.loc[
             existing_large, "p_nom_min"