Locating your MPRN
The MPRN is a numeric reference, usually between 6 and 10 digits, found on your gas bill. It identifies your specific meter and supply point independently of who currently supplies you. Suppliers need it to check network charges for your location and to generate a firm rather than indicative quote.
How gas consumption bands work
Gas suppliers typically split business customers into consumption bands, often described loosely as micro, small and large usage. A business using under around 293,000 kWh a year sits in a different pricing band to one using several million kWh, and the unit rate per kWh generally falls as consumption rises, reflecting lower relative supply costs at volume.
This means two businesses on the same postcode can receive different unit rates purely because of how much gas they use, which is why a comparison needs an accurate annual figure rather than a rounded estimate.
What a gas comparison shows
| Band | Approx annual usage | Typical rate direction |
|---|---|---|
| Micro | Under 25,000 kWh | Higher unit rate |
| Small | 25,000 to 293,000 kWh | Mid-range unit rate |
| Large | Over 293,000 kWh | Lower unit rate, may need half-hourly review |
Compare business energy prices
Enter your postcode and business details to compare available commercial energy prices.
Standing charges on gas contracts
Alongside the unit rate, gas contracts carry a daily standing charge that covers fixed costs such as meter maintenance and network access, regardless of how much gas you use. A low unit rate paired with a high standing charge can cost more overall for a low-usage business than a slightly higher unit rate with a lower standing charge, so both figures need comparing together.
Seasonal usage and comparison timing
- Gas usage is typically higher in winter for heating-dependent businesses
- Suppliers average annual consumption rather than pricing by season
- Comparing using a full 12 months of billing gives the most accurate picture
- Renewing 3 to 6 months ahead avoids a default deemed rate
Switching gas supplier
A gas supplier switch changes only the commercial and billing arrangement, not the physical pipework or meter. Gas continues to flow uninterrupted during the switch, which typically completes within around three to five weeks from agreeing a new contract.