def METHOD_NAME():
    """Insert scenarios and their parameters to scenario table
    Returns
    -------
    None.
    """
    db.execute_sql("DELETE FROM scenario.egon_scenario_parameters CASCADE;")
    session = sessionmaker(bind=db.engine())()
    # Scenario eGon2035
    egon2035 = EgonScenario(name="eGon2035")
    egon2035.description = """
        The mid-term scenario eGon2035 is based on scenario C 2035 of the
        Netzentwicklungsplan Strom 2035, Version 2021.
        Scenario C 2035 is characretized by an ambitious expansion of
        renewable energies and a higher share of sector coupling.
        Analogous to the Netzentwicklungsplan, the countries bordering germany
        are modeled based on Ten-Year Network Development Plan, Version 2020.
        """
    egon2035.global_parameters = parameters.global_settings(egon2035.name)
    egon2035.electricity_parameters = parameters.electricity(egon2035.name)
    egon2035.gas_parameters = parameters.gas(egon2035.name)
    egon2035.heat_parameters = parameters.heat(egon2035.name)
    egon2035.mobility_parameters = parameters.mobility(egon2035.name)
    session.add(egon2035)
    session.commit()
    # Scenario eGon100RE
    egon100re = EgonScenario(name="eGon100RE")
    egon100re.description = """
        The long-term scenario eGon100RE represents a 100% renewable
        energy secor in Germany.
        """
    egon100re.global_parameters = parameters.global_settings(egon100re.name)
    egon100re.electricity_parameters = parameters.electricity(egon100re.name)
    egon100re.gas_parameters = parameters.gas(egon100re.name)
    egon100re.heat_parameters = parameters.heat(egon100re.name)
    egon100re.mobility_parameters = parameters.mobility(egon100re.name)
    session.add(egon100re)
    session.commit()
    # Scenario eGon2021
    eGon2021 = EgonScenario(name="eGon2021")
    eGon2021.description = """
        Status quo scenario for 2021. Note: This is NOT A COMPLETE SCENARIO
        and covers only some sector data required by ding0, such as demand
        on NUTS 3 level and generation units .
        """
    eGon2021.global_parameters = parameters.global_settings(eGon2021.name)
    eGon2021.electricity_parameters = parameters.electricity(eGon2021.name)
    eGon2021.gas_parameters = parameters.gas(eGon2021.name)
    eGon2021.heat_parameters = parameters.heat(eGon2021.name)
    eGon2021.mobility_parameters = parameters.mobility(eGon2021.name)
    session.add(eGon2021)
    session.commit()