Help with different tariffs.

I am updating my spreadsheet for anyone that wants a copy to take account on separate pages for dual fuel, electricity only, and day/night rates.
I am looking for some confirmation to keep me on the right path, if anyone can help I am doing the various versions based on:

  1. Electricity only tariff will lose the daily fuel allowance, vol correction and the conversion to kWh.
  2. Day/night rates on electric only will lose the same as above.
    3.Dual fuel with day/night rates for electricity would include daily fuel allowance, vol correction and the conversion to kWh.
  3. Are there other options that I am missing that should be included.

Thanks.