diff --git a/src/muse/data/example/default_timeslice/output.py b/src/muse/data/example/default_timeslice/output.py
deleted file mode 100644
index 68225919d..000000000
--- a/src/muse/data/example/default_timeslice/output.py
+++ /dev/null
@@ -1,45 +0,0 @@
-from typing import Optional
-
-import xarray as xr
-
-from muse.outputs.sector import market_quantity, register_output_quantity
-
-
-@register_output_quantity
-def supply_timeslice(
-    market: xr.Dataset,
-    capacity: xr.DataArray,
-    technologies: xr.Dataset,
-    sum_over: Optional[list[str]] = None,
-    drop: Optional[list[str]] = None,
-    rounding: int = 4,
-) -> xr.DataArray:
-    """Current supply."""
-    market = market.reset_index("timeslice")
-    result = (
-        market_quantity(market.supply, sum_over=sum_over, drop=drop)
-        .rename("supply")
-        .to_dataframe()
-        .round(rounding)
-    )
-    return result[result.supply != 0]
-
-
-@register_output_quantity
-def consumption_timeslice(
-    market: xr.Dataset,
-    capacity: xr.DataArray,
-    technologies: xr.Dataset,
-    sum_over: Optional[list[str]] = None,
-    drop: Optional[list[str]] = None,
-    rounding: int = 4,
-) -> xr.DataArray:
-    """Current consumption."""
-    market = market.reset_index("timeslice")
-    result = (
-        market_quantity(market.consumption, sum_over=sum_over, drop=drop)
-        .rename("consumption")
-        .to_dataframe()
-        .round(rounding)
-    )
-    return result[result.consumption != 0]
diff --git a/src/muse/examples.py b/src/muse/examples.py
index df6293d6f..fb81e0647 100644
--- a/src/muse/examples.py
+++ b/src/muse/examples.py
@@ -315,10 +315,6 @@ def _copy_default_timeslice(path: Path):
         example_data_dir() / "default_timeslice" / "settings.toml",
         path / "settings.toml",
     )
-    copyfile(
-        example_data_dir() / "default_timeslice" / "output.py",
-        path / "output.py",
-    )
 
 
 def _copy_multiple_agents(path: Path):
diff --git a/src/muse/readers/csv.py b/src/muse/readers/csv.py
index 4eea66108..600715b7b 100644
--- a/src/muse/readers/csv.py
+++ b/src/muse/readers/csv.py
@@ -875,33 +875,6 @@ def read_trade(
     return result.rename(src_region="region")
 
 
-def read_finite_resources(path: Union[str, Path]) -> xr.DataArray:
-    """Reads finite resources from csv file.
-
-    The CSV file is made up of columns "Region", "Year", as well
-    as three timeslice columns ("Month", "Day", "Hour"). All three sets of columns are
-    optional. The timeslice set should contain a full set of timeslices, if present.
-    Other columns correspond to commodities.
-    """
-    from muse.timeslices import TIMESLICE
-
-    data = pd.read_csv(path)
-    data.columns = [c.lower() for c in data.columns]
-    ts_levels = TIMESLICE.get_index("timeslice").names
-
-    if set(data.columns).issuperset(ts_levels):
-        timeslice = pd.MultiIndex.from_arrays(
-            [data[u] for u in ts_levels], names=ts_levels
-        )
-        timeslice = pd.DataFrame(timeslice, columns=["timeslice"])
-        data = pd.concat((data, timeslice), axis=1)
-        data.drop(columns=ts_levels, inplace=True)
-    indices = list({"year", "region", "timeslice"}.intersection(data.columns))
-    data.set_index(indices, inplace=True)
-
-    return xr.Dataset.from_dataframe(data).to_array(dim="commodity")
-
-
 def check_utilization_and_minimum_service_factors(data, filename):
     if "utilization_factor" not in data.columns:
         raise ValueError(
diff --git a/tests/conftest.py b/tests/conftest.py
index f7d52adb8..3c223b50a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -19,20 +19,6 @@ def logger():
     return logger
 
 
-@fixture()
-def sectors_dir(tmpdir):
-    """Copies sectors directory to new dir.
-
-    This gives some assurance the machinery for specifying sectors data actually works.
-    """
-    from shutil import copytree
-
-    from muse.defaults import DEFAULT_SECTORS_DIRECTORY
-
-    copytree(DEFAULT_SECTORS_DIRECTORY, tmpdir.join("sectors_data_dir"))
-    return tmpdir.join("sectors_data_dir")
-
-
 def compare_df(
     expected: DataFrame,
     actual: DataFrame,
@@ -376,17 +362,6 @@ def retro_agent(agent_args, technologies, stock) -> Agent:
     return create_agent(agent_args, technologies, stock.capacity, "retrofit")
 
 
-@fixture
-def objective(retro_agent, coords) -> DataArray:
-    from numpy.random import choice, rand
-
-    asset = retro_agent.assets.technology.rename(technology="asset")
-    techs = [i for i in coords["technology"] if choice((True, False))]
-    data = rand(len(asset), len(techs))
-    coords = {"asset": asset, "technology": techs}
-    return DataArray(data, coords=coords, dims=("asset", "technology"))
-
-
 @fixture
 def stock(coords, technologies) -> Dataset:
     return _stock(coords, technologies)
@@ -447,21 +422,6 @@ def _stock(
     return result
 
 
-@fixture
-def assets(coords, technologies) -> Dataset:
-    """Stock with repeat technologies."""
-    from xarray import concat
-
-    return concat(
-        (
-            _stock(coords, technologies),
-            _stock(coords, technologies),
-            _stock(coords, technologies),
-        ),
-        dim="technology",
-    )
-
-
 @fixture
 def search_space(retro_agent, technologies):
     """Example search space, as would be computed by an agent."""
diff --git a/tests/test_investments.py b/tests/test_investments.py
index 38f49a261..d22909a8e 100644
--- a/tests/test_investments.py
+++ b/tests/test_investments.py
@@ -1,33 +1,4 @@
-from pytest import fixture, mark
-
-
-@fixture
-def capacity_expansion():
-    from numpy import arange
-    from numpy.random import rand
-    from xarray import Dataset
-
-    from muse.investments import CapacityAddition
-
-    data = Dataset()
-    data["asset"] = "asset", arange(5, 10)
-    data["replacement"] = "replacement", arange(0, 6)
-    data["ranks"] = data.asset + data.replacement // 2
-    data["ranks"] = data.ranks.rank("replacement").astype(int)
-    data["deltas"] = (
-        ("asset", "replacement"),
-        rand(data.asset.size, data.replacement.size),
-    )
-    data["deltas"] *= rand(*data.deltas.shape) > 0.25
-
-    return CapacityAddition(data.ranks, data.deltas)
-
-
-def add_var(coordinates, *dims, factor=100.0):
-    from numpy.random import rand
-
-    shape = tuple(len(coordinates[u]) for u in dims)
-    return dims, (rand(*shape) * factor).astype(type(factor))
+from pytest import mark
 
 
 def test_cliff_retirement_known_profile():
diff --git a/tests/test_outputs.py b/tests/test_outputs.py
index dd4fa5d51..db011e150 100644
--- a/tests/test_outputs.py
+++ b/tests/test_outputs.py
@@ -28,33 +28,6 @@ def streetcred(*args, **kwargs):
         )
 
 
-@fixture
-def limits_path(tmp_path):
-    from textwrap import dedent
-
-    path = tmp_path / "limits.csv"
-    path.write_text(
-        dedent(
-            """
-            Year,Month,Day,Hour,Region,Gas
-            2020,all-year,all-week,night,R1,5
-            2020,all-year,all-week,morning,R1,5
-            2020,all-year,all-week,afternoon,R1,5
-            2020,all-year,all-week,early-peak,R1,5
-            2020,all-year,all-week,late-peak,R1,5
-            2020,all-year,all-week,evening,R1,5
-            2050,all-year,all-week,night,R1,8
-            2050,all-year,all-week,morning,R1,8
-            2050,all-year,all-week,afternoon,R1,8
-            2050,all-year,all-week,early-peak,R1,8
-            2050,all-year,all-week,late-peak,R1,8
-            2050,all-year,all-week,evening,R1,8
-            """
-        )
-    )
-    return path
-
-
 @mark.usefixtures("streetcred")
 def test_save_with_dir(tmpdir):
     from pandas import read_csv
diff --git a/tests/test_quantities.py b/tests/test_quantities.py
index 8e1238342..9f89f16b4 100644
--- a/tests/test_quantities.py
+++ b/tests/test_quantities.py
@@ -5,24 +5,6 @@
 from pytest import approx, fixture
 
 
-@fixture
-def demand(
-    technologies: xr.Dataset, capacity: xr.DataArray, market: xr.DataArray
-) -> xr.DataArray:
-    from collections.abc import Hashable, Mapping
-    from typing import Any
-
-    region = xr.DataArray(list(set(capacity.region.values)), dims="region")
-    coords: Mapping[Hashable, Any] = {
-        "commodity": technologies.commodity,
-        "year": capacity.year,
-        "region": region,
-        "timeslice": market.timeslice,
-    }
-    data = np.random.randint(0, 5, tuple(len(u) for u in coords.values()))
-    return xr.DataArray(data, coords=coords, dims=tuple(coords.keys()))
-
-
 @fixture
 def production(
     technologies: xr.Dataset, capacity: xr.DataArray, timeslice
@@ -39,11 +21,6 @@ def production(
     return broadcast_timeslice(capacity) * distribute_timeslice(comms)
 
 
-def make_array(array):
-    data = np.random.randint(1, 5, len(array))
-    return xr.DataArray(data, dims=array.dims, coords=array.coords)
-
-
 def test_supply_enduse(technologies, capacity, timeslice):
     """End-use part of supply."""
     from muse.commodities import is_enduse
diff --git a/tests/test_readers.py b/tests/test_readers.py
index 87589d1dc..084d37b14 100644
--- a/tests/test_readers.py
+++ b/tests/test_readers.py
@@ -22,21 +22,6 @@ def user_data_files(settings: dict) -> None:
         new_file.write_text("Some data")
 
 
-@fixture
-def sectors_files(settings: dict):
-    """Creates the files related to the sector."""
-    for data in settings["sectors"].values():
-        for path in data.values():
-            if not isinstance(path, (Path, str)):
-                continue
-            path = Path(path)
-            if path.suffix != ".csv":
-                continue
-
-            path.parent.mkdir(parents=True, exist_ok=True)
-            path.write_text("Some data")
-
-
 @fixture
 def plugins(settings: dict, tmp_path) -> Path:
     """Creates the files related to the custom modules."""
@@ -48,21 +33,6 @@ def plugins(settings: dict, tmp_path) -> Path:
     return plugin
 
 
-@fixture
-def input_file(settings: dict, tmpdir, plugins, user_data_files, sectors_files) -> Path:
-    """Creates a whole set of MUSE input files in a temporary directory.
-
-    This fixture creates a temporal directory with all the folders and files required
-    for a successful run of the read_settings function.
-    """
-    # Finally we create the settings file
-    input_file = tmpdir.join("settings.toml")
-    with open(input_file, "w") as f:
-        toml.dump(settings, f)
-
-    return input_file
-
-
 def test_add_known_parameters(settings: dict):
     """Test the add_known_parameters function.