def map_compat_fueltech(fueltech: str) -> str:
    """
        Map old opennem fueltechs to new fueltechs

    """
    if fueltech == "brown_coal":
        return "coal_brown"

    if fueltech == "black_coal":
        return "coal_black"

    if fueltech == "solar":
        return "solar_utility"

    if fueltech == "biomass":
        return "bioenergy_biomass"

    return fueltech