noded["fixed_chp_gas"] = solph.components.Converter(
        label="fixed_chp_gas",
        inputs={noded["bgas"]: solph.Flow(nominal_value=0)},
        outputs={noded["bel"]: solph.Flow(), noded["bth"]: solph.Flow()},
        conversion_factors={noded["bel"]: 0.3, noded["bth"]: 0.5},