Bugfix prepare_sector_network.py (#33)

* Bugfix prepare_sector_network.py

wrongfully set comma leads to an error in `prepare_sector_network` when `config[sector][methanol][methanol_to_power][ccgt]` is activated

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: toniseibold

scripts/prepare_sector_network.py

@@ -972,8 +972,8 @@ def add_methanol_to_power(n, costs, types=None):
             carrier="CCGT methanol",
             p_nom_extendable=True,
             capital_cost=capital_cost,
-            overnight_cost=costs.at["CCGT", "investment"],
-            *costs.at["CCGT", "efficiency"],
+            overnight_cost=costs.at["CCGT", "investment"]
+            * costs.at["CCGT", "efficiency"],
             marginal_cost=costs.at["CCGT", "VOM"],
             efficiency=costs.at["CCGT", "efficiency"],
             efficiency2=costs.at["methanolisation", "carbondioxide-input"],