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Fix small issues in add_land_use_constraint_m #1022

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Fix small issues in add_land_use_constraint_m #1022

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2 changes: 2 additions & 0 deletions doc/release_notes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -181,6 +181,8 @@ Upcoming Release

* Fix custom busmap read in `cluster_network`.

* Fix p_nom_min of renewables generators for myopic approach and add check of existing capacities in `add_land_use_constraint_m`.

PyPSA-Eur 0.10.0 (19th February 2024)
=====================================

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16 changes: 16 additions & 0 deletions scripts/solve_network.py
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Expand Up @@ -159,6 +159,9 @@ def _add_land_use_constraint_m(n, planning_horizons, config):
current_horizon = snakemake.wildcards.planning_horizons

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

existing = n.generators.loc[n.generators.carrier == carrier, "p_nom"]
ind = list(
{i.split(sep=" ")[0] + " " + i.split(sep=" ")[1] for i in existing.index}
Expand All @@ -180,6 +183,19 @@ def _add_land_use_constraint_m(n, planning_horizons, config):
sel_p_year
].rename(lambda x: x[:-4] + current_horizon)

# check if existing capacities are larger than technical potential
existing_large = n.generators[
n.generators["p_nom_min"] > n.generators["p_nom_max"]
].index
if len(existing_large):
logger.warning(
f"Existing capacities larger than technical potential for {existing_large},\
adjust technical potential to existing capacities"
)
n.generators.loc[existing_large, "p_nom_max"] = n.generators.loc[
existing_large, "p_nom_min"
]

n.generators.p_nom_max.clip(lower=0, inplace=True)


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