A small script to calculate energy costs per year

energy_plan_rate_calculator.py

# Cost per units and standard day charge
ELEC_PKWH = 12.2
ELEC_DAILY = 11.420

GAS_PKWH = 2.973
GAS_DAILY = 12.910

# Number of units i use
ELEC_USAGE = 4000
GAS_USAGE = 8000


def standing_charge(ppd):
    return (ppd*365) / 100

def cost_for_x_units(units, ppkwh):
    return (units * ppkwh) / 100

if __name__ == '__main__':
    elec_sc = standing_charge(ELEC_DAILY)
    gas_sc = standing_charge(GAS_DAILY)

    elec_kwh = cost_for_x_units(ELEC_PKWH, ELEC_USAGE)
    gas_kwh = cost_for_x_units(GAS_PKWH, GAS_USAGE)

    print 'Gas: --------------------'
    print 'Standing charge:', gas_sc
    print 'PKW hour', gas_kwh
    print 'Yearly total:', gas_kwh + gas_sc

    print 'Elec: -------------------'
    print 'Standing charge:', elec_sc
    print 'PKW hour', elec_kwh
    print 'Yearly total:', elec_kwh + elec_sc