Merge pull request #814 from yerbol-akhmetov/no_gas_gen

No gas generators

scripts/prepare_sector_network.py

@@ -467,6 +467,9 @@ def add_carrier_buses(n, carrier, nodes=None):
         * costs.at[carrier, "discount rate"],  # preliminary value to avoid zeros
     )
 
+    if carrier == "gas":
+        return
+
     n.madd(
         "Generator",
         nodes,