Having more than one electricity meter in your property can cause complications with your switch. This is most common where a property's heating is wired to a different meter from the one for general electricity usage, or where a property has been converted.
If both meters are linked to a single MPAN (electricity supply number), known officially as 'related or complex metering', then you'd normally only be able to switch by talking directly to your chosen supplier. Unfortunately this'd mean you wouldn't be able to switch through Cheap Energy Club (including our collective switches).
However, if the meters have separate supply numbers, then you'd need to submit two separate switches via Cheap Energy Club using separate accounts. To help this go smoothly please select each address as 'not listed' when registering, which will allow you to manually enter your address and add any extra details, eg, garage or annexe, for clarity. You'll then be asked to confirm the MPAN on the switch application form.