This is a surprisingly common question, particularly if you’ve just moved into a new property, taken over an existing site, or inherited responsibility for energy procurement.

If you don’t know who supplies your electricity or gas, don’t worry. There are clear steps you can take to find out quickly and avoid unnecessary delays, billing issues, or out-of-contract rates.
1. Check Recent Bills or Tenancy Documents
If the property has been occupied recently, the simplest place to start is with a previous energy bill. This will confirm:
- The supplier name
- Your account number
- The supply address
- Your MPAN (electricity) or MPRN (gas)
If you’ve just moved in, your landlord, managing agent, or outgoing tenant may also be able to confirm the supplier.
2. Use the National Databases
If no bills are available, you can use the industry’s central databases.
For electricity, contact your local Distribution Network Operator (DNO). In England, Scotland and Wales, you can find your DNO via the
Energy Networks Association website. They can confirm your current electricity supplier and provide your MPAN.
For gas, you can contact the Meter Point Administration Service (MPAS) via the Xoserve database, or use the
find my supplier tool.
These services are free and typically provide confirmation immediately.
3. Contact the Meter Operator
In some cases, particularly with larger commercial sites, your appointed meter operator may be able to confirm the registered supplier. This is more common where contracts have been arranged historically through brokers or third parties. Common meter operators include IMServ, Npower, and Stark.
4. Act Quickly to Avoid Out-of-Contract Rates
If you’ve taken over a site and haven’t agreed a contract, you could be placed on
deemed or out-of-contract rates. These are usually significantly higher than negotiated market rates.
Confirming your supplier allows you to:
- Request historic consumption data
- Understand your current contract status
- Avoid unexpected charges
- Begin procurement discussions
Why It Matters
Knowing your supplier isn’t just administrative, it’s commercially important. Without clarity on who supplies your energy, you can’t properly review your costs, assess renewal timing, or manage market exposure.
If you’re unsure where to start, or if you’ve identified your supplier but don’t know what contract you’re on, SeeMore Energy can help you interpret the position and plan your next steps with confidence.
Getting clarity is the first step towards controlling your energy strategy.
