Your MPAN (electric) and MPRN (gas) are needed by your new supplier to ensure it switches the correct supply for you.
They consist of numbers only and no letters. You should be able to find these either by looking on your bills or by asking your current supplier.
Your MPAN is your 13 digit electricity supply number and looks like this:
Your MPRN is your 6-10 digit gas supply number and will look like this:
It's worth noting that these numbers differ from your serial number which will include letters and numbers.
Do your figures include VAT?
How does the comparison calculator work?
How is Ofgem's price cap factored in to my results?
How does energy switching work?
I've called the supplier and it knows nothing about the switch
When will I get my cashback?
How do I update my usage or tariff details on my Cheap Energy Club account?