diff --git a/.readthedocs.yml b/.readthedocs.yml
index 173d21d7..d6b81a40 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -4,5 +4,8 @@
 
 version: 2
 
-conda:
-    environment: envs/environment.docs.yaml
+python:
+  version: 3.8
+  install:
+    - requirements: doc/requirements.txt
+  system_packages: true
diff --git a/doc/configuration.rst b/doc/configuration.rst
index a75669cd..a6683046 100644
--- a/doc/configuration.rst
+++ b/doc/configuration.rst
@@ -50,7 +50,8 @@ An exemplary dependency graph (starting from the simplification rules) then look
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 14-18
+   :start-at: scenario:
+   :end-before: countries:
 
 .. csv-table::
    :header-rows: 1
@@ -66,7 +67,8 @@ Specifies the temporal range to build an energy system model for as arguments to
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 22-25
+   :start-at: snapshots:
+   :end-before: enable:
 
 .. csv-table::
    :header-rows: 1
@@ -80,7 +82,8 @@ Specifies the temporal range to build an energy system model for as arguments to
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 36-60
+   :start-at: electricity:
+   :end-before: atlite:
 
 .. csv-table::
    :header-rows: 1
@@ -117,7 +120,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 77-94
+   :start-at: renewable:
+   :end-before:   offwind-ac:
 
 .. csv-table::
    :header-rows: 1
@@ -129,7 +133,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 77,95-107
+   :start-at:   offwind-ac:
+   :end-before:   offwind-dc:
 
 .. csv-table::
    :header-rows: 1
@@ -141,7 +146,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 77,108-121
+   :start-at:   offwind-dc:
+   :end-before:   solar:
 
 .. csv-table::
    :header-rows: 1
@@ -153,7 +159,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 77,122-141
+   :start-at:   solar:
+   :end-before:   hydro:
 
 .. csv-table::
    :header-rows: 1
@@ -165,7 +172,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 77,142-147
+   :start-at:   hydro:
+   :end-before: lines:
 
 .. csv-table::
    :header-rows: 1
@@ -179,7 +187,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 149-157
+   :start-at: lines:
+   :end-before: links:
 
 .. csv-table::
    :header-rows: 1
@@ -193,7 +202,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 159-163
+   :start-at: links:
+   :end-before: transformers:
 
 .. csv-table::
    :header-rows: 1
@@ -207,7 +217,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 165-168
+   :start-at: transformers:
+   :end-before: load:
 
 .. csv-table::
    :header-rows: 1
@@ -221,7 +232,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 170-176
+   :start-at: load:
+   :end-before: costs:
 
 .. csv-table::
    :header-rows: 1
@@ -235,7 +247,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 178-190
+   :start-after: scaling_factor:
+   :end-before: solving:
 
 .. csv-table::
    :header-rows: 1
@@ -256,7 +269,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 192-202
+   :start-at: solving:
+   :end-before:   solver:
 
 .. csv-table::
    :header-rows: 1
@@ -268,7 +282,8 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 192,203-219
+   :start-at:   solver:
+   :end-before: plotting:
 
 .. csv-table::
    :header-rows: 1
@@ -282,7 +297,7 @@ Define and specify the ``atlite.Cutout`` used for calculating renewable potentia
 
 .. literalinclude:: ../config.default.yaml
    :language: yaml
-   :lines: 221-299
+   :start-at: plotting:
 
 .. csv-table::
    :header-rows: 1
diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 00000000..890eda95
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,17 @@
+sphinx
+sphinx_rtd_theme
+
+pypsa
+vresutils>=0.3.1
+powerplantmatching>=0.4.8
+atlite>=0.2.2
+dask<=2021.3.1
+
+# cartopy
+scikit-learn
+pycountry
+pyyaml
+seaborn
+memory_profiler
+tables
+descartes
\ No newline at end of file
diff --git a/envs/environment.docs.yaml b/envs/environment.docs.yaml
deleted file mode 100755
index 9edf0118..00000000
--- a/envs/environment.docs.yaml
+++ /dev/null
@@ -1,33 +0,0 @@
-# SPDX-FileCopyrightText: : 2017-2020 The PyPSA-Eur Authors
-#
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-name: pypsa-eur-docs
-channels:
-  - conda-forge
-dependencies:
-  - python<=3.7
-  - pip
-  #- pypsa>=0.17.1
-  - atlite>=0.2.2
-  - dask<=2021.3.1 # until https://github.com/dask/dask/issues/7583 is solved
-  - pre-commit
-
-  # Dependencies of the workflow itself
-  - scikit-learn
-  - pycountry
-  - seaborn
-  - memory_profiler
-  - yaml
-  - pytables
-  - powerplantmatching>=0.4.8
-
-  # GIS dependencies have to come all from conda-forge
-  - cartopy
-  - descartes
-
-  - pip:
-    - git+https://github.com/pypsa/pypsa.git#egg=pypsa
-    - vresutils==0.3.1
-    - sphinx
-    - sphinx_rtd_theme