From f2a636c62cbc3dca93eaf7df7ad6686012f1e8da Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Tue, 2 Jan 2024 18:12:49 +0100
Subject: [PATCH 1/2] bugfix: correct unit of capital_cost of Haber-Bosch

---
 scripts/prepare_sector_network.py | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index 2480754c..ac0b618b 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -796,6 +796,8 @@ def add_ammonia(n, costs):
         "Bus", spatial.ammonia.nodes, location=spatial.ammonia.locations, carrier="NH3"
     )
 
+    MWh_elec_per_MWh_NH3 = cf_industry["MWh_elec_per_tNH3_electrolysis"] / cf_industry["MWh_NH3_per_tNH3"]
+
     n.madd(
         "Link",
         nodes,
@@ -805,14 +807,10 @@ def add_ammonia(n, costs):
         bus2=nodes + " H2",
         p_nom_extendable=True,
         carrier="Haber-Bosch",
-        efficiency=1
-        / (
-            cf_industry["MWh_elec_per_tNH3_electrolysis"]
-            / cf_industry["MWh_NH3_per_tNH3"]
-        ),  # output: MW_NH3 per MW_elec
+        efficiency=1 / MWh_elec_per_MWh_NH3,
         efficiency2=-cf_industry["MWh_H2_per_tNH3_electrolysis"]
         / cf_industry["MWh_elec_per_tNH3_electrolysis"],  # input: MW_H2 per MW_elec
-        capital_cost=costs.at["Haber-Bosch", "fixed"],
+        capital_cost=costs.at["Haber-Bosch", "fixed"] / MWh_elec_per_MWh_NH3,
         lifetime=costs.at["Haber-Bosch", "lifetime"],
     )
 

From 2678fdef993eb2c0d1b325c4e260040ed2e19174 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Tue, 2 Jan 2024 17:13:34 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 scripts/prepare_sector_network.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index ac0b618b..1dc2b3ef 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -796,7 +796,9 @@ def add_ammonia(n, costs):
         "Bus", spatial.ammonia.nodes, location=spatial.ammonia.locations, carrier="NH3"
     )
 
-    MWh_elec_per_MWh_NH3 = cf_industry["MWh_elec_per_tNH3_electrolysis"] / cf_industry["MWh_NH3_per_tNH3"]
+    MWh_elec_per_MWh_NH3 = (
+        cf_industry["MWh_elec_per_tNH3_electrolysis"] / cf_industry["MWh_NH3_per_tNH3"]
+    )
 
     n.madd(
         "Link",