A UK restaurant bill is rarely large because of poor procurement alone. The structural drivers are kitchen peak demand, refrigeration baseload, cellar cooling in pubs, and standing charges that sit higher on small-site meters than most owners notice. Benchmarking against published industry references rather than against an arbitrary previous bill is the move that consistently identifies where the cost is genuinely escaping.
TL;DR
- CIBSE TM46 benchmark categories for restaurants and pubs sit substantially above general retail per square metre, reflecting heavy kitchen and refrigeration loads.
- Kitchen peak demand frequently sets the maximum demand figure on a half-hourly meter; cellar cooling sets the overnight baseload in pubs.
- Standing charges can account for 20 to 40 per cent of a small restaurant's electricity bill depending on the distribution region and supply capacity.
- Refrigeration typically runs 24 hours per day and is the single largest baseload line in most casual dining sites.
- Capacity charges and Distribution Use of System recovery have shifted significantly under Ofgem's targeted charging review since 2022, with material implications for half-hourly metered hospitality sites.
Last reviewed: May 2026
Benchmark ranges from published industry references
CIBSE TM46 sets benchmark energy use figures for non-domestic building types in the UK, including specific categories for restaurants and public houses, expressed in kWh per square metre per year for both electricity and fossil thermal use. The published TM46 reference values place restaurants and pubs well above general retail and well above office buildings per square metre, reflecting the heat, ventilation and refrigeration loads concentrated in a small footprint.
The Energy Saving Trust hospitality benchmark work, drawn from BEIS and now DESNZ non-domestic energy survey data, points in the same direction.
Restaurants typically report higher gas-equivalent kWh per square metre than general retail because of cooking thermal load. Pubs typically report higher electricity kWh per square metre than restaurants of similar size because of cellar cooling running continuously.
Kitchen peak demand and the induction-versus-gas split
Kitchen design drives both peak demand and the energy split. An all-gas commercial kitchen uses gas for ranges, ovens, salamanders and water boilers, with electricity restricted to ventilation, refrigeration, dishwashing and small power. An all-electric kitchen, increasingly built around induction hobs, electric combi ovens and electric water boilers, shifts almost everything to the electricity bill.
The shift matters at the meter. An all-electric kitchen pushes peak demand up sharply during service, and the supply capacity at the meter has to be sized to handle that peak. A 40-cover restaurant that switches from gas to induction during a refurbishment can move from a low-voltage single-phase supply rating into a three-phase upgrade.
The catch is that the upfront cost of an electrical capacity upgrade can easily exceed the cooking equipment cost itself. Distribution network operators charge connection works on a recovered-cost basis and the figure is site-specific.
Owners often assume induction is automatically cheaper because of higher hob efficiency. Hob efficiency is genuinely higher, but if the kitchen also adds an electric combi oven running on the same supply during peak service, the half-hourly capacity charge can offset the unit-rate saving.
Refrigeration as the silent baseload
Refrigeration runs while the restaurant is closed. Walk-in cold rooms, undercounter fridges, display chillers and freezers operate 24 hours a day, with compressors cycling on thermostatic control. For a casual dining site the refrigeration line frequently sits as the largest single baseload, ahead of lighting or small power.
Refrigeration efficiency drops sharply with poor door discipline, dirty condensers and unmonitored door seals. A two-degree set-point that drifts to minus-one or plus-one over time pushes runtime up materially without changing anything visible on the kitchen floor.
Half-hourly metered restaurants can identify refrigeration baseload by looking at the 02:00 to 05:00 consumption profile, which represents close to pure refrigeration load.
Cellar cooling and the pub-specific load
Pubs carry a separate continuous load that restaurants do not: the cellar cooling system. Beer cellars are typically held at around 11 to 13 degrees Celsius, with cellar cooling units running year-round to maintain the temperature against ambient ground heat and the warmth of incoming product.
The cellar cooling unit is often older than the rest of the pub's equipment because it was specified when the building's licence was first issued and rarely upgraded since. Older units carry higher power draw per unit of cooling and lower efficiency.
A 2024 Energy Saving Trust hospitality study noted that cellar cooling can represent a disproportionate share of total pub electricity use, particularly in smaller community pubs where dispense volume does not justify the original cellar sizing.
Standing charges as a share of the small-site bill
Standing charges on a small restaurant electricity supply often sit between 60p and 90p per day, and on gas between 30p and 50p per day, depending on supplier, region and meter type. Multiplied across 365 days these charges total several hundred pounds per year before any kWh is consumed.
For a small site with annual electricity consumption of, say, 30,000 kWh, standing charges can represent 20 to 40 per cent of the total bill once the unit rate component is calculated. The proportion falls as consumption rises; a busier site with 80,000 kWh per year sees the same standing charge fall to a smaller proportion of the total.
In practice this means the lowest unit rate is not always the lowest bill. A supplier with a 24p per kWh unit rate and a 78p per day standing charge can be more expensive overall than one with a 25p per kWh unit rate and a 56p per day standing charge for a small low-consumption site.
Half-hourly meters and capacity charges
Restaurants and pubs with electricity demand above the 100 kW threshold typically operate on half-hourly metering. Half-hourly metered sites are billed not just on consumption but on capacity and Distribution Use of System charges. Capacity charges relate to the maximum agreed import capacity at the supply point and apply whether the capacity is used or not. Distribution Use of System charges have been restructured under Ofgem's targeted charging review, which moved more recovery onto fixed charges from 2022 onwards.
For a busy restaurant the capacity charge can be a meaningful annual figure on its own, separate from the unit-rate consumption charge. Sites that have downgraded equipment but kept the original capacity rating can pay capacity charges against headroom that is no longer used.
A formal capacity reduction request to the distribution network operator can lower this charge, but it has to be requested and confirmed; it does not happen automatically.
Benchmark comparison table
| Building type | Electricity intensity range | Fossil thermal intensity range | Source category |
|---|---|---|---|
| Restaurant | High electricity intensity per square metre under TM46 restaurant category | High gas intensity per square metre under TM46 restaurant category | CIBSE TM46 |
| Public house | High electricity intensity per square metre under TM46 public house category | Moderate to high gas intensity per square metre under TM46 public house category | CIBSE TM46 |
| Cafe | Moderate electricity intensity per square metre | Lower gas intensity per square metre than full restaurant category | CIBSE TM46 / Energy Saving Trust hospitality |
| General retail | Lower electricity intensity per square metre than hospitality categories | Lower gas intensity per square metre than hospitality categories | CIBSE TM46 |
| Office | Materially lower than hospitality categories per square metre | Lower than hospitality categories per square metre | CIBSE TM46 Office |
Exact figures for each category are published in CIBSE TM46 and should be read from the document directly. Treating any single number quoted online as definitive is a common error; the ranges are the meaningful comparison.
Regional layers and a worked dimensional example
A 90 square metre restaurant in the Yorkshire distribution region with a gas-led kitchen and standard refrigeration setup will not have the same bill as the same footprint in the Southern Electric region with an induction-led kitchen. Regional Distribution Use of System charges differ, gas standing charges differ between the Northern and Southern transmission zones, and supplier risk premium loaded into the unit rate also varies.
The DESNZ March 2026 statistical release on non-domestic energy prices gives the broad average UK non-domestic price by consumption band and is the public benchmark against which any individual quote can be cross-checked.
For a Sheffield restaurant operator running three sites, the variation between sites on the same supplier tariff can still be 10 to 15 per cent on the standing charge component alone because each site sits in a slightly different network position.
Where the restaurant bill most often goes wrong
The recurring patterns are visible across the published energy survey work. Sites pay an out-of-contract variable rate for months because a renewal letter was missed. Sites carry capacity ratings far above current demand and pay capacity charges against unused headroom. Sites run aged cellar cooling or refrigeration plant well past efficient life. Sites accept an induction-led kitchen refurbishment without recosting the electrical supply capacity in advance. Sites take a single broker-led quote as the market rate without testing it against the supplier's own published business pricing or a second quote. Sites neglect the half-hourly meter profile entirely and miss the overnight refrigeration creep that a 15-minute review would have caught. Each pattern is reversible and each one carries a meaningful annual cost when left in place.
Each of these is structural rather than tactical. None is fixed by switching supplier alone, although switching is often where the conversation starts. The combination of benchmarking against TM46 and Energy Saving Trust references, reading the half-hourly profile, and verifying capacity ratings is the diagnostic that consistently surfaces what is actually driving the figure.
A small restaurant that completes this exercise once a year does more for its energy line than one that runs three supplier comparisons in the same period.
Editorial disclaimer. KaelTripton is an independent UK publisher. This article is editorial, not personal financial or energy procurement advice. Rates, caps, grant levels and supplier offers move; verify any figure with the named primary source before acting on it. KaelTripton does not earn commission from suppliers or brokers mentioned.
Frequently asked questions
What is the typical share of a restaurant electricity bill taken by refrigeration?
Refrigeration typically dominates the overnight baseload and is frequently the single largest electricity line in a casual dining site. The exact share varies with site profile and equipment age.
Is an induction kitchen always cheaper than gas?
Hob efficiency is higher on induction, but total cost depends on tariff structure, capacity charges and refurbishment cost for the electrical supply. The energy split shifts to electricity, which has a higher unit rate than gas in most UK supplier tariffs.
How big is the standing charge on a small restaurant supply?
Electricity standing charges on small restaurant supplies often sit between 60p and 90p per day; gas between 30p and 50p per day. Across 365 days these total several hundred pounds before any consumption is billed.
What is a half-hourly capacity charge?
A charge linked to the maximum import capacity agreed at the supply point. It applies whether the capacity is used in full or not, and was restructured under Ofgem's targeted charging review from 2022 onwards.
Why are cellar cooling units a particular issue for pubs?
Cellar cooling runs continuously at around 11 to 13 degrees Celsius, often through older plant carried over from the original licence. Older units carry higher power draw per unit of cooling than current models.
Which UK source is best for benchmarking restaurant kWh per square metre?
CIBSE TM46 is the standard published benchmark categorisation. Energy Saving Trust hospitality publications and DESNZ non-domestic energy use surveys provide complementary data.
Sources
- CIBSE - TM46 energy benchmarks for non-domestic buildings (referenced May 2026)
- Energy Saving Trust - hospitality energy benchmarks (referenced May 2026)
- DESNZ - non-domestic energy prices statistics, March 2026 release
- DESNZ - non-domestic energy use surveys (legacy BEIS publications, accessed May 2026)
- Ofgem - targeted charging review and Distribution Use of System reforms (2022 to 2026)
- Ofgem - energy advice for businesses, half-hourly metering (May 2026)