Let’s make the numbers clearer.

A useful calculation report includes

• Which calculator you used.
• The units, time period and non-sensitive example inputs.
• The result you expected and the result displayed.
• Your browser name, if the problem looks technical.

Don’t include electricity account numbers, billing addresses, passwords, payment details or copies of your bill. We only need the figures relevant to reproducing the calculation.

You may find the answer in How we calculate or the energy guides.