CI: use scip and highs as solvers for clustering and solving, instead of ipopt and glpk

.github/workflows/ci.yaml

@@ -46,16 +46,6 @@ jobs:
       run: |
         echo -ne "url: ${CDSAPI_URL}\nkey: ${CDSAPI_TOKEN}\n" > ~/.cdsapirc
 
-    - name: Add solver to environment
-      run: |
-        echo -e "- glpk\n- ipopt<3.13.3" >> envs/environment.yaml
-      if: ${{ matrix.os }} == 'windows-latest'
-
-    - name: Add solver to environment
-      run: |
-        echo -e "- glpk\n- ipopt" >> envs/environment.yaml
-      if: ${{ matrix.os }} != 'windows-latest'
-
     - name: Setup micromamba
       uses: mamba-org/setup-micromamba@v1
       with:

config/test/config.electricity.yaml

@@ -69,8 +69,8 @@ lines:
 
 solving:
   solver:
-    name: glpk
-    options: "glpk-default"
+    name: highs
+    options: "highs-default"
 
 
 plotting:

config/test/config.myopic.yaml

@@ -73,8 +73,8 @@ industry:
 
 solving:
   solver:
-    name: glpk
-    options: glpk-default
+    name: highs
+    options: highs-default
   mem: 4000
 
 plotting:

config/test/config.overnight.yaml

@@ -65,8 +65,8 @@ sector:
 
 solving:
   solver:
-    name: glpk
-    options: glpk-default
+    name: highs
+    options: highs-default
   mem: 4000
 
 plotting:

config/test/config.perfect.yaml

@@ -75,8 +75,8 @@ industry:
 
 solving:
   solver:
-    name: glpk
-    options: glpk-default
+    name: highs
+    options: highs-default
   mem: 4000
 
 plotting:

doc/release_notes.rst

@@ -62,6 +62,11 @@ Upcoming Release
 
 * To determine the optimal topology to meet the number of clusters, the workflow used pyomo in combination with ``ipopt`` or ``gurobi``. This dependency has been replaced by using ``linopy`` in combination with ``scipopt`` or ``gurobi``. The environment file has been updated accordingly.
 
+* The ``highs`` solver was added to the default environment file.
+
+* The default solver for testing the workflow in the CI has been changed from ``glpk`` to ``highs``.
+
+
 
 PyPSA-Eur 0.9.0 (5th January 2024)
 ==================================

envs/environment.yaml

@@ -59,3 +59,4 @@ dependencies:
 
 - pip:
   - tsam>=2.3.1
+  - highspy