Consumption bands used by suppliers
Most business energy suppliers classify sites into broad consumption bands to price contracts efficiently. These bands are not official regulatory categories but reflect how wholesale purchasing and billing systems are structured internally.
The table below gives an indicative view of how bands are typically split for electricity, though gas bands are usually higher in kWh terms because gas is used less efficiently and often for heating.
| Band | Annual usage (kWh) | Typical premises |
|---|---|---|
| Micro | Under 15,000 | Small shop, café, single office |
| Small | 15,000 - 50,000 | Larger retail unit, small restaurant |
| Medium | 50,000 - 200,000 | Multi-floor office, small factory |
| Large | Above 200,000 | Manufacturing site, large retail store |
Why unit rates vary by band
Lower-usage sites tend to see a higher proportion of their bill made up of standing charges, because these fixed costs do not shrink with lower consumption. As a result, the effective cost per kWh can look higher for micro and small band customers even where the underlying unit rate is similar.
Larger consumers benefit from economies of scale in supplier administration and can sometimes access more competitive wholesale-linked pricing, though this comes with more exposure to market movements on flexible contracts.
Fixed versus variable pricing for small businesses
- Fixed-rate contracts lock in a unit rate for the contract term, typically one to three years
- Variable rates move with wholesale market changes and suit businesses comfortable with fluctuation
- Deemed rates apply automatically when a contract ends without renewal and are usually the most expensive option
- Rollover contracts can extend an old rate automatically unless a business acts before the notice window
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Regional variation
Distribution costs differ across the fourteen regional electricity distribution areas in Great Britain, meaning the same consumption profile in Scotland can price differently to one in the South East of England. Gas distribution zones follow a similar principle.
This regional layer sits alongside wholesale costs and supplier margin, so any indicative price comparison should always be treated as a starting point rather than a guaranteed figure.
Meter type and its effect on price
Small businesses typically operate on standard non-half-hourly meters, which are billed on estimated or actual meter reads rather than continuous half-hourly data. This keeps administration simpler but means suppliers price in a degree of estimation risk.
Smart meters that submit automatic readings tend to reduce billing disputes and can support more accurate quoting, since suppliers are working from real consumption data rather than estimates carried over from a previous occupier.
How to get a competitive small business quote
- Have at least one full year of consumption data, or an accurate estimate, ready before requesting quotes
- Start the renewal process 3 to 6 months before your current contract ends
- Compare like-for-like contract lengths rather than comparing a 1-year rate to a 3-year rate
- Check standing charges as well as unit rates, particularly for micro and small band usage