diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 539ad48f9..84d191d61 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -28,7 +28,7 @@ concurrency:
 env:
   PYTHON_VERSION: "3.11"
   MPLBACKEND: Agg
-  PLOTLY_RENDERER: json
+  PLOTLY_RENDERER: notebook_connected
 
 jobs:
   build:
@@ -72,14 +72,14 @@ jobs:
           path: docs/notebooks/**/*.ipynb
           key: notebooks-${{ steps.notebook-cache-key.outputs.hash }}
 
-      - name: Execute notebooks in parallel
+      - name: Execute fast notebooks
         if: steps.notebook-cache.outputs.cache-hit != 'true'
         run: |
           set -eo pipefail
-          # Execute all notebooks in parallel (4 at a time)
-          # Run from notebooks directory so relative imports work
-          cd docs/notebooks && find . -name '*.ipynb' -print0 | \
-            xargs -0 -P 4 -I {} sh -c 'jupyter execute --inplace "$1" || exit 255' _ {}
+          # Execute fast notebooks in parallel (4 at a time), excluding slow ones
+          cd docs/notebooks && find . -name '*.ipynb' | \
+            grep -vFf slow_notebooks.txt | \
+            xargs -P 4 -I {} sh -c 'jupyter execute --inplace "$1" || exit 255' _ {}
 
       - name: Build docs
         env:
@@ -136,12 +136,22 @@ jobs:
           path: docs/notebooks/**/*.ipynb
           key: notebooks-${{ steps.notebook-cache-key.outputs.hash }}
 
-      - name: Execute notebooks in parallel
+      - name: Execute fast notebooks
         if: steps.notebook-cache.outputs.cache-hit != 'true'
         run: |
           set -eo pipefail
-          cd docs/notebooks && find . -name '*.ipynb' -print0 | \
-            xargs -0 -P 4 -I {} sh -c 'jupyter execute --inplace "$1" || exit 255' _ {}
+          # Execute fast notebooks in parallel (4 at a time), excluding slow ones
+          cd docs/notebooks && find . -name '*.ipynb' | \
+            grep -vFf slow_notebooks.txt | \
+            xargs -P 4 -I {} sh -c 'jupyter execute --inplace "$1" || exit 255' _ {}
+
+      - name: Execute slow notebooks
+        if: steps.notebook-cache.outputs.cache-hit != 'true'
+        run: |
+          set -eo pipefail
+          # Execute slow notebooks (only on release)
+          cd docs/notebooks && cat slow_notebooks.txt | \
+            xargs -I {} sh -c 'jupyter execute --inplace "$1" || exit 255' _ {}
 
       - name: Configure Git
         run: |
diff --git a/docs/notebooks/slow_notebooks.txt b/docs/notebooks/slow_notebooks.txt
new file mode 100644
index 000000000..974b4f54b
--- /dev/null
+++ b/docs/notebooks/slow_notebooks.txt
@@ -0,0 +1,2 @@
+08b-rolling-horizon.ipynb
+08c2-clustering-storage-modes.ipynb
diff --git a/flixopt/config.py b/flixopt/config.py
index c0029b609..bae75c5f0 100644
--- a/flixopt/config.py
+++ b/flixopt/config.py
@@ -818,11 +818,15 @@ def notebook(cls) -> type[CONFIG]:
         """Configure for Jupyter notebook environments.
 
         Optimizes settings for notebook usage:
-        - Sets plotly renderer to 'notebook' for inline display
+        - Sets plotly renderer to 'notebook' for inline display (unless PLOTLY_RENDERER env var is set)
         - Disables automatic plot.show() calls (notebooks display via _repr_html_)
         - Enables SUCCESS-level console logging
         - Disables solver console output for cleaner notebook cells
 
+        Note:
+            The plotly renderer can be overridden by setting the PLOTLY_RENDERER
+            environment variable (e.g., 'notebook_connected' for CDN-based rendering).
+
         Examples:
             ```python
             # At the start of your notebook
@@ -836,8 +840,9 @@ def notebook(cls) -> type[CONFIG]:
         """
         import plotly.io as pio
 
-        # Set plotly to render inline in notebooks
-        pio.renderers.default = 'notebook'
+        # Set plotly to render inline in notebooks (respect PLOTLY_RENDERER env var)
+        if 'PLOTLY_RENDERER' not in os.environ:
+            pio.renderers.default = 'notebook'
         pio.templates.default = 'plotly_white'
 
         # Disable default show since notebooks render via _repr_html_