3 gas meters and 3 electric meters = 3 x £67 rebate not taken into account in below numbers.
Elec day rate = 39.702p/kwh ex 5% VAT
Elec night rate = 23.494p/kwh ditto
Elec standing charge = 37.169p/day
Gas rate = 9.818p/kwh exc 5% VAT
Gas standing charge = 27.128p/day
Bulb
1x 87-year old who...