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Fix loss of units with same name and prepare release 0.9.1 #328

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fneum merged 2 commits into from
Oct 7, 2026
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Fix loss of units with same name and prepare release 0.9.1 #328

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1151182
Fix loss of units with same name and prepare release 0.9.1
fneum Oct 7, 2026
83319a4
Add PR number to release notes
fneum Oct 7, 2026
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5 changes: 5 additions & 0 deletions docs/release-notes.md
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Expand Up @@ -10,6 +10,11 @@ SPDX-License-Identifier: MIT

*

## [v0.9.1](https://github.com/PyPSA/powerplantmatching/releases/tag/v0.9.1) (7th October 2026)

* Bugfix: `pm.powerplants()` no longer drops entries that share name, fuel type and country. In v0.9.0, this removed all but one unit of each wind park in the Marktstammdatenregister. The operating wind capacity in Germany fell from 77 GW to 18 GW, and biogas from 7 GW to 3 GW. ([PR #328](https://github.com/PyPSA/powerplantmatching/pull/328))
* For OPSD EU, use the most specific fuel classification (`energy_source_level_3`) for `Fueltype` when available. Correct the capacity of Borssele 1 nuclear power plant to the net value of 485 MW. ([PR #288](https://github.com/PyPSA/powerplantmatching/pull/288))

## [v0.9.0](https://github.com/PyPSA/powerplantmatching/releases/tag/v0.9.0) (3rd October 2026)

* Updated BEYONDCOAL, IRENASTAT, ENTSOE, JRC, Marktstammdatenregister (August 2026), European Energy Storage Inventory and the Global Energy Monitor datasets (oil and gas, coal, geothermal, nuclear, hydropower) to the latest versions. ([PR #319](https://github.com/PyPSA/powerplantmatching/pull/319))
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9 changes: 0 additions & 9 deletions powerplantmatching/collection.py
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Expand Up @@ -243,15 +243,6 @@ def powerplants(
else:
matched = matched[matched.lat.notnull()]

if isinstance(matched.columns, pd.MultiIndex):
matched = (
matched.stack(future_stack=True)
.drop_duplicates(["Name", "Fueltype", "Country"])
.unstack(-1)
)
else:
matched = matched.drop_duplicates(["Name", "Fueltype", "Country"])

matched.reset_index(drop=True).to_csv(fn, index_label="id", encoding="utf-8")

if extend_by_vres:
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28 changes: 28 additions & 0 deletions test/test_collection.py
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@@ -0,0 +1,28 @@
# SPDX-FileCopyrightText: Contributors to powerplantmatching <https://github.com/pypsa/powerplantmatching>
#
# SPDX-License-Identifier: MIT

import pandas as pd

import powerplantmatching as pm
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from powerplantmatching import collection


def test_powerplants_keeps_units_with_same_name(monkeypatch):
turbines = pd.DataFrame(
{
"Name": ["Windpark Nord", "Windpark Nord"],
"Fueltype": "Wind",
"Country": "Germany",
"Capacity": [3.0, 4.0],
"lat": [54.0, 54.1],
"lon": [9.0, 9.1],
"projectID": [{"MASTR": {"SEE1"}}, {"MASTR": {"SEE2"}}],
}
)
monkeypatch.setattr(collection, "collect", lambda *args, **kwargs: turbines)
config = pm.get_config(fully_included_sources=[], variant="test-same-name")

df = pm.powerplants(config=config, update=True, fill_geopositions=False)

assert df.Capacity.sum() == turbines.Capacity.sum()
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