From 9d939fa635f8a0b55f7049dd23a29facfeda1471 Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Wed, 3 Jan 2024 10:12:43 +0100
Subject: [PATCH] remove helmeth option

---
 config/config.default.yaml        |  2 --
 doc/configtables/sector.csv       |  1 -
 doc/release_notes.rst             |  2 ++
 scripts/plot_network.py           |  4 ++--
 scripts/plot_summary.py           |  1 -
 scripts/prepare_sector_network.py | 17 -----------------
 6 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/config/config.default.yaml b/config/config.default.yaml
index d7704a27..e8ca22dc 100644
--- a/config/config.default.yaml
+++ b/config/config.default.yaml
@@ -451,7 +451,6 @@ sector:
   solar_cf_correction: 0.788457  # =  >>> 1/1.2683
   marginal_cost_storage: 0. #1e-4
   methanation: true
-  helmeth: false
   coal_cc: false
   dac: true
   co2_vent: false
@@ -954,7 +953,6 @@ plotting:
     Sabatier: '#9850ad'
     methanation: '#c44ce6'
     methane: '#c44ce6'
-    helmeth: '#e899ff'
     # synfuels
     Fischer-Tropsch: '#25c49a'
     liquid: '#25c49a'
diff --git a/doc/configtables/sector.csv b/doc/configtables/sector.csv
index 280c1906..57e6ce3d 100644
--- a/doc/configtables/sector.csv
+++ b/doc/configtables/sector.csv
@@ -71,7 +71,6 @@ solar_thermal,--,"{true, false}",Add option for using solar thermal to generate
 solar_cf_correction,--,float,The correction factor for the value provided by the solar thermal profile calculations
 marginal_cost_storage,currency/MWh ,float,The marginal cost of discharging batteries in distributed grids
 methanation,--,"{true, false}",Add option for transforming hydrogen and CO2 into methane using methanation.
-helmeth,--,"{true, false}",Add option for transforming power into gas using HELMETH (Integrated High-Temperature ELectrolysis and METHanation for Effective Power to Gas Conversion)
 coal_cc,--,"{true, false}",Add option for coal CHPs with carbon capture
 dac,--,"{true, false}",Add option for Direct Air Capture (DAC)
 co2_vent,--,"{true, false}",Add option for vent out CO2 from storages to the atmosphere.
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index f84c0f83..5ac7925e 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -79,6 +79,8 @@ Upcoming Release
   Energy Monitor's `Europe Gas Tracker
   <https://globalenergymonitor.org/projects/europe-gas-tracker>`_.
 
+* Remove HELMETH option.
+
 **Bugs and Compatibility**
 
 * A bug preventing custom powerplants specified in ``data/custom_powerplants.csv`` was fixed. (https://github.com/PyPSA/pypsa-eur/pull/732)
diff --git a/scripts/plot_network.py b/scripts/plot_network.py
index f44bb6de..67481120 100644
--- a/scripts/plot_network.py
+++ b/scripts/plot_network.py
@@ -31,7 +31,7 @@ def rename_techs_tyndp(tech):
     tech = rename_techs(tech)
     if "heat pump" in tech or "resistive heater" in tech:
         return "power-to-heat"
-    elif tech in ["H2 Electrolysis", "methanation", "helmeth", "H2 liquefaction"]:
+    elif tech in ["H2 Electrolysis", "methanation", "H2 liquefaction"]:
         return "power-to-gas"
     elif tech == "H2":
         return "H2 storage"
@@ -495,7 +495,7 @@ def plot_ch4_map(network):
     # make a fake MultiIndex so that area is correct for legend
     fossil_gas.index = pd.MultiIndex.from_product([fossil_gas.index, ["fossil gas"]])
 
-    methanation_i = n.links[n.links.carrier.isin(["helmeth", "Sabatier"])].index
+    methanation_i = n.links.query("carrier == 'Sabatier'").index
     methanation = (
         abs(
             n.links_t.p1.loc[:, methanation_i].mul(
diff --git a/scripts/plot_summary.py b/scripts/plot_summary.py
index 5804e785..67ac9b55 100644
--- a/scripts/plot_summary.py
+++ b/scripts/plot_summary.py
@@ -121,7 +121,6 @@ preferred_order = pd.Index(
         "gas boiler",
         "gas",
         "natural gas",
-        "helmeth",
         "methanation",
         "ammonia",
         "hydrogen storage",
diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index c4a67a38..f746fe9c 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -1369,23 +1369,6 @@ def add_storage_and_grids(n, costs):
             lifetime=costs.at["methanation", "lifetime"],
         )
 
-    if options["helmeth"]:
-        n.madd(
-            "Link",
-            spatial.nodes,
-            suffix=" helmeth",
-            bus0=nodes,
-            bus1=spatial.gas.nodes,
-            bus2=spatial.co2.nodes,
-            carrier="helmeth",
-            p_nom_extendable=True,
-            efficiency=costs.at["helmeth", "efficiency"],
-            efficiency2=-costs.at["helmeth", "efficiency"]
-            * costs.at["gas", "CO2 intensity"],
-            capital_cost=costs.at["helmeth", "fixed"],
-            lifetime=costs.at["helmeth", "lifetime"],
-        )
-
     if options.get("coal_cc"):
         n.madd(
             "Link",