diff --git a/src/calliope/backend/latex_backend_model.py b/src/calliope/backend/latex_backend_model.py
index 0256af5a..651be3cb 100644
--- a/src/calliope/backend/latex_backend_model.py
+++ b/src/calliope/backend/latex_backend_model.py
@@ -11,6 +11,7 @@
 
 import jinja2
 import numpy as np
+import pandas as pd
 import xarray as xr
 
 from calliope.backend import backend_model, parsing
@@ -424,11 +425,13 @@ def add_parameter(  # noqa: D102, override
             "math_repr": rf"\textit{{{parameter_name}}}"
             + self._dims_to_var_string(parameter_values),
         }
+        if pd.notna(default):
+            attrs["default"] = default
 
         self._add_to_dataset(parameter_name, parameter_values, "parameters", attrs)
 
     def add_constraint(  # noqa: D102, override
-        self, name: str, constraint_dict: parsing.UnparsedConstraint | None = None
+        self, name: str, constraint_dict: parsing.UnparsedConstraint
     ) -> None:
         equation_strings: list = []
 
@@ -488,7 +491,7 @@ def _constraint_setter(where: xr.DataArray, references: set) -> xr.DataArray:
         )
 
     def add_global_expression(  # noqa: D102, override
-        self, name: str, expression_dict: parsing.UnparsedExpression | None = None
+        self, name: str, expression_dict: parsing.UnparsedExpression
     ) -> None:
         equation_strings: list = []
 
@@ -515,7 +518,7 @@ def _expression_setter(
         )
 
     def add_variable(  # noqa: D102, override
-        self, name: str, variable_dict: parsing.UnparsedVariable | None = None
+        self, name: str, variable_dict: parsing.UnparsedVariable
     ) -> None:
         domain_dict = {"real": r"\mathbb{R}\;", "integer": r"\mathbb{Z}\;"}
         bound_refs: set = set()
@@ -544,7 +547,7 @@ def _variable_setter(where: xr.DataArray, references: set) -> xr.DataArray:
         )
 
     def add_objective(  # noqa: D102, override
-        self, name: str, objective_dict: parsing.UnparsedObjective | None = None
+        self, name: str, objective_dict: parsing.UnparsedObjective
     ) -> None:
         sense_dict = {
             "minimize": r"\min{}",
diff --git a/tests/conftest.py b/tests/conftest.py
index 55373c78..6719e299 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -289,9 +289,13 @@ def dummy_model_data(config_defaults, model_defaults):
             "all_nan": np.nan,
             "with_inf": 100,
             "only_techs": 5,
+            "no_dims": 0,
             **model_defaults,
         }
     )
+    # This value is set on the parameter directly to ensure it finds its way through to the LaTex math.
+    model_data.no_dims.attrs["default"] = 0
+
     model_data.attrs["math"] = AttrDict(
         {"constraints": {}, "variables": {}, "global_expressions": {}, "objectives": {}}
     )
diff --git a/tests/test_backend_latex_backend.py b/tests/test_backend_latex_backend.py
index 0b6220a4..f2730f4e 100644
--- a/tests/test_backend_latex_backend.py
+++ b/tests/test_backend_latex_backend.py
@@ -383,6 +383,8 @@ def test_create_obj_list(self, dummy_latex_backend_model):
                     \begin{itemize}
                         \item expr
                     \end{itemize}
+
+                    \textbf{Default}: 0
                     \end{document}"""
                 ),
             ),
@@ -421,6 +423,8 @@ def test_create_obj_list(self, dummy_latex_backend_model):
                     **Used in**:
 
                     * expr
+
+                    **Default**: 0
                     """
                 ),
             ),
@@ -454,6 +458,8 @@ def test_create_obj_list(self, dummy_latex_backend_model):
                     **Used in**:
 
                     * [expr](#expr)
+
+                    **Default**: 0
                     """
                 ),
             ),
@@ -589,6 +595,8 @@ def test_generate_math_doc_mkdocs_features_admonition(self, dummy_model_data):
                     ??? info "Used in"
 
                         * [expr](#expr)
+
+                    **Default**: 0
                     """
         )