diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 28d0278a..2fb51c54 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -51,7 +51,7 @@ repos:
 
   # Formatting with "black" coding style
 - repo: https://github.com/psf/black-pre-commit-mirror
-  rev: 24.2.0
+  rev: 24.3.0
   hooks:
       # Format Python files
   - id: black
diff --git a/doc/configtables/costs.csv b/doc/configtables/costs.csv
index b69c0bf9..03933c18 100644
--- a/doc/configtables/costs.csv
+++ b/doc/configtables/costs.csv
@@ -1,6 +1,6 @@
 ,Unit,Values,Description
 year,--,YYYY; e.g. '2030',Year for which to retrieve cost assumptions of ``resources/costs.csv``.
-version,--,vX.X.X; e.g. 'v0.5.0',Version of ``technology-data`` repository to use.
+version,--,vX.X.X or <user>/<repo>/vX.X.X; e.g. 'v0.5.0',Version of ``technology-data`` repository to use. If this string is of the form <user>/<repo>/<version> then costs are instead retrieved from ``github.com/<user>/<repo>`` at the <version> tag.
 rooftop_share,--,float,Share of rooftop PV when calculating capital cost of solar (joint rooftop and utility-scale PV).
 social_discountrate,p.u.,float,Social discount rate to compare costs in different investment periods. 0.02 corresponds to a social discount rate of 2%.
 fill_values,--,float,Default values if not specified for a technology in ``resources/costs.csv``.
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 11fd3df7..21094250 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -82,6 +82,8 @@ Upcoming Release
 
 * Upgrade default techno-economic assumptions to ``technology-data`` v0.8.1.
 
+* Add possibility to download cost data from custom fork of ``technology-data``.
+
 * Linearly interpolate missing investment periods in year-dependent
   configuration options.
 
diff --git a/rules/retrieve.smk b/rules/retrieve.smk
index b2c1e8d6..ac296f79 100644
--- a/rules/retrieve.smk
+++ b/rules/retrieve.smk
@@ -50,7 +50,7 @@ if config["enable"].get("retrieve_irena"):
             onwind="data/existing_infrastructure/onwind_capacity_IRENA.csv",
             solar="data/existing_infrastructure/solar_capacity_IRENA.csv",
         log:
-            logs("retrieve_irena.log"),
+            "logs/retrieve_irena.log",
         resources:
             mem_mb=1000,
         retries: 2
diff --git a/scripts/add_electricity.py b/scripts/add_electricity.py
index ac73cb1f..7e60203f 100755
--- a/scripts/add_electricity.py
+++ b/scripts/add_electricity.py
@@ -184,12 +184,13 @@ def sanitize_carriers(n, config):
 
 
 def sanitize_locations(n):
-    n.buses["x"] = n.buses.x.where(n.buses.x != 0, n.buses.location.map(n.buses.x))
-    n.buses["y"] = n.buses.y.where(n.buses.y != 0, n.buses.location.map(n.buses.y))
-    n.buses["country"] = n.buses.country.where(
-        n.buses.country.ne("") & n.buses.country.notnull(),
-        n.buses.location.map(n.buses.country),
-    )
+    if "location" in n.buses.columns:
+        n.buses["x"] = n.buses.x.where(n.buses.x != 0, n.buses.location.map(n.buses.x))
+        n.buses["y"] = n.buses.y.where(n.buses.y != 0, n.buses.location.map(n.buses.y))
+        n.buses["country"] = n.buses.country.where(
+            n.buses.country.ne("") & n.buses.country.notnull(),
+            n.buses.location.map(n.buses.country),
+        )
 
 
 def add_co2_emissions(n, costs, carriers):
diff --git a/scripts/prepare_perfect_foresight.py b/scripts/prepare_perfect_foresight.py
index f7e8495e..fea0cef4 100644
--- a/scripts/prepare_perfect_foresight.py
+++ b/scripts/prepare_perfect_foresight.py
@@ -537,5 +537,8 @@ if __name__ == "__main__":
     # set carbon constraints
     n = set_carbon_constraints(n)
 
+    # update meta
+    n.meta = dict(snakemake.config, **dict(wildcards=dict(snakemake.wildcards)))
+
     # export network
     n.export_to_netcdf(snakemake.output[0])
diff --git a/scripts/retrieve_cost_data.py b/scripts/retrieve_cost_data.py
index eb1ef041..39fcab7c 100644
--- a/scripts/retrieve_cost_data.py
+++ b/scripts/retrieve_cost_data.py
@@ -25,9 +25,10 @@ if __name__ == "__main__":
     set_scenario_config(snakemake)
 
     version = snakemake.params.version
-    baseurl = (
-        f"https://raw.githubusercontent.com/PyPSA/technology-data/{version}/outputs/"
-    )
+    if "/" in version:
+        baseurl = f"https://raw.githubusercontent.com/{version}/outputs"
+    else:
+        baseurl = f"https://raw.githubusercontent.com/PyPSA/technology-data/{version}/outputs/"
     filepath = Path(snakemake.output[0])
     url = baseurl + filepath.name
 
diff --git a/test.sh b/test.sh
index d6007750..a3dfb65f 100755
--- a/test.sh
+++ b/test.sh
@@ -2,8 +2,12 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
+set -x && \
+
 snakemake -call solve_elec_networks --configfile config/test/config.electricity.yaml --rerun-triggers=mtime && \
 snakemake -call all --configfile config/test/config.overnight.yaml --rerun-triggers=mtime && \
 snakemake -call all --configfile config/test/config.myopic.yaml --rerun-triggers=mtime && \
 snakemake -call all --configfile config/test/config.perfect.yaml --rerun-triggers=mtime && \
-snakemake -call all --configfile config/test/config.scenarios.yaml --rerun-triggers=mtime -n
+snakemake -call all --configfile config/test/config.scenarios.yaml --rerun-triggers=mtime -n && \
+
+set +x