@staticmethod
def _change_columns(column):
    """
        Function which converts variable names from UK power plant data, to PowerPlant instance variable names for easy
        conversion
        :param column (str): String name of variable from UK power plant data
        :return (str): Name in PowerPlant instance variable name format
        """
    if 'Connect_system_cost' in column:
        return 'connection_cost_per_mw'
    elif 'Constr_cost' in column:
        return 'construction_cost_per_mw'
    elif 'Fixed_cost' in column:
        return 'fixed_o_and_m_per_mw'
    elif 'Infra_cost' in column:
        return 'infrastructure'
    elif 'Insurance_cost' in column:
        return 'insurance_cost_per_mw'
    elif 'Pre_dev_cost' in column:
        return 'pre_dev_cost_per_mw'
    elif 'Var_cost' in column:
        return 'variable_o_and_m_per_mwh'
    elif 'Pre_Dur' in column:
        return 'pre_dev_period'
    elif 'Operating_Period' in column:
        return 'operating_period'
    elif 'Constr_Dur' in column:
        return 'construction_period'
    elif 'Constr' in column:
        return 'construction_spend_years'
    elif 'Pre' in column:
        return 'pre_dev_spend_years'
    elif 'Efficiency' in column:
        return 'efficiency'
    elif 'Average_Load_Factor' in column:
        return 'average_load_factor'
    else:
        raise ValueError('Plant cost data not found')
