Business gas unit rates comparison (UK)
Understand today’s business gas unit rates, what changes your p/kWh, and how to compare like-for-like quotes across UK suppliers.
- What “unit rate” and “standing charge” mean for business gas bills
- UK factors that move your rate: usage, meter type, contract length, credit checks, region
- Two realistic cost examples and a comparison checklist to avoid nasty surprises
Rates shown are examples only. Your business gas prices depend on your meter, usage, credit checks, location, contract terms and market conditions.
Fast answer: what are business gas unit rates in the UK?
A business gas unit rate is the price you pay for each unit of gas used, usually shown in pence per kWh (p/kWh). Your bill is typically:
1) Usage charge
Your kWh used × your unit rate (p/kWh)
2) Fixed charges
Your standing charge (p/day) + any agreed contract/industry charges
Key takeaway: the lowest unit rate isn’t always the cheapest overall. A higher p/kWh with a lower standing charge (or better contract fit) can cost less depending on how much gas you use.
What moves your rate most
- Annual usage (kWh) and profile
- Meter type (standard vs AMR/SMART) and data quality
- Contract length and start date
- Payment terms and credit checks
- Location/region and network costs
When to compare
- Within the last 6 months of your contract
- If you’re on out-of-contract or deemed rates
- If usage has changed (opening hours, equipment, occupancy)
- After a change of tenancy or business name
What you’ll need
- Business postcode
- Current supplier + contract end date (if known)
- Estimated annual usage (kWh) or recent bill
- Your MPRN (if available)
Compare business gas unit rates with EnergyPlus
We’ll use your details to request estimated quotes from relevant UK business energy suppliers and present options you can compare on a like-for-like basis.
What we prioritise: clear unit rate (p/kWh), standing charge (p/day), contract length, start date, and any important terms (for example, credit requirements and exit fees if stated).
What happens after you submit?
- We confirm your basics (postcode, contact details) to find the right tariff types for your site.
- We compare available business gas quotes based on your usage and preferences (where provided).
- You review options and decide whether to proceed. No obligation.
If you’re mid-contract, you may have an exit fee. We’ll highlight this so you can decide whether to switch now or line up a renewal.
Get your business gas quotes
Tell us where you are and how to reach you. We’ll do the comparison.
How to compare business gas unit rates (like-for-like)
To make sure you’re comparing fairly, focus on the total cost for your estimated usage, not the headline p/kWh alone. Here’s a practical approach used by many procurement teams, simplified for SMEs.
Step 1: Check what’s included
- Is the quote gas-only or part of a dual-fuel bundle?
- Are prices shown ex VAT or inc VAT?
- Is it a fixed unit rate for the term, or variable/deemed?
Step 2: Compare total annual cost
Use the same annual kWh figure across quotes:
Estimated annual cost ≈ (kWh × unit rate) + (standing charge × 365)
Some businesses are billed on 366 days in leap years; standing charge is typically daily.
Step 3: Confirm contract details
- Contract length (e.g., 12/24/36 months)
- Start date and any uplifts or pass-through items (if applicable)
- Termination notice and auto-renewal behaviour
- Exit fees and what triggers them
Important: Business energy prices are not price-capped in the same way as domestic tariffs. That’s why comparing terms and total cost matters.
Business gas rate comparison: what to check (table)
Use this table to compare quotes consistently. It’s designed to help you spot trade-offs between unit rate, standing charge and contract risk.
| What you’re comparing | Why it matters | What to ask the supplier/broker |
|---|---|---|
| Unit rate (p/kWh) | Drives the bulk of costs for higher-usage sites. | Is it fixed for the full term? Ex VAT or inc VAT? |
| Standing charge (p/day) | Can be significant for low-usage or seasonal businesses. | Is it fixed? Any minimum monthly charges? |
| Contract length | Longer terms can mean stability but more commitment. | What are the renewal/termination rules? |
| Payment method & terms | Direct Debit and faster payment can affect pricing. | Any discounts or charges based on payment timing? |
| Meter type & reads | Better data can reduce billing disputes and estimation. | Do you need AMR/SMART? Who provides the meter service? |
| Credit requirements | May change eligibility, deposits, or available rates. | Is a deposit required? Are directors’ guarantees requested? |
| Exit fees / termination fees | Can make switching mid-term uneconomical. | What are the fees and the notice period? Any roll-over terms? |
Decision checklist: who this suits
- SMEs renewing soon who want predictable monthly costs
- Multi-site operators who need consistent terms across locations
- Businesses moving from deemed/out-of-contract rates to a fixed deal
- Seasonal users who want to balance standing charge vs unit rate
Who it may not suit (without extra checks)
- Sites with complex metering or disputed reads (get this resolved first)
- Very new businesses with limited credit history (you may face deposits)
- Businesses planning to relocate soon (watch exit fees and contract end dates)
- Users unsure of consumption (get a realistic kWh estimate before committing)
Two realistic scenarios (with numbers)
These are illustrative examples to show how unit rate and standing charge interact. They are not live market prices and exclude VAT and any supplier-specific pass-through items unless stated.
Scenario A: Small café (low-to-medium usage)
- Assumed annual usage
- 30,000 kWh
- Quote 1
- Unit rate 7.2p/kWh, standing charge 40p/day
- Quote 2
- Unit rate 6.8p/kWh, standing charge 65p/day
Estimated annual cost
- Quote 1: (30,000 × £0.072) + (365 × £0.40) ≈ £2,306
- Quote 2: (30,000 × £0.068) + (365 × £0.65) ≈ £2,277
Despite the higher standing charge, Quote 2 is slightly lower at this usage. If usage drops, Quote 1 may win.
Scenario B: Small manufacturing unit (higher usage)
- Assumed annual usage
- 180,000 kWh
- Quote 1
- Unit rate 6.1p/kWh, standing charge 55p/day
- Quote 2
- Unit rate 6.4p/kWh, standing charge 25p/day
Estimated annual cost
- Quote 1: (180,000 × £0.061) + (365 × £0.55) ≈ £11,181
- Quote 2: (180,000 × £0.064) + (365 × £0.25) ≈ £11,613
At higher usage, the unit rate difference dominates: the lower p/kWh can outweigh a higher standing charge.
Caveat: Some business gas contracts can include additional items (for example, metering-related services or specific pass-through charge structures). Always compare on the supplier’s full written quote and terms.
Costs, exclusions and common pitfalls (UK)
This is where businesses most often get caught out when comparing “cheap” gas unit rates. Use these checks before you commit.
1) Out-of-contract (deemed) rates
If you’ve moved in, rolled off a contract, or haven’t agreed new terms, you can be placed on deemed (out-of-contract) rates. These are often higher and can change.
2) VAT and eligibility
Most business energy quotes are shown ex VAT. Some businesses may qualify for 5% VAT (for example, certain charities). If you don’t qualify, VAT may be 20%.
If VAT treatment matters to you, confirm it in writing. HMRC rules can be nuanced.
3) Contract rollovers and notice periods
Business contracts can include specific renewal windows and termination notice requirements. Missing the window can reduce options or trigger rollovers.
4) Estimated bills due to missing reads
If you don’t submit reads (or your meter data is poor), bills may be estimated. That can make comparisons look wrong and can cause catch-up bills later.
5) Credit checks, deposits, guarantees
Some suppliers may request a deposit, shorter terms, or different payment conditions after credit checks—changing the rate you’re offered.
6) Extra services and pass-through items
Some quotes include extra services (for example, metering support) or handle industry charges differently. This can affect the “true” comparison.
Practical tip: Ask for the quote in writing with unit rate, standing charge, term, start date, and any termination/exit wording included. That’s the easiest way to compare fairly.
Business gas unit rates: FAQs
Are business gas unit rates the same as domestic?
No. Business energy pricing is typically negotiated and can vary more by usage, risk, payment terms and contract structure. Domestic tariffs are marketed differently and follow separate rules.
What’s a standing charge on business gas?
A standing charge is a daily fixed cost for keeping your supply connected and covering certain fixed costs. Even if you use very little gas, standing charges still apply.
Why do two suppliers quote different unit rates for the same business?
Rates can differ due to wholesale purchasing strategies, risk appetite, credit requirements, metering assumptions, contract length, and the supplier’s operational costs. The same business may also be placed into a different usage band depending on data quality.
Can I switch business gas if I’m in contract?
Usually you can, but you may face termination/exit fees. Many businesses compare in advance and line up a new contract to start when the current one ends, to avoid penalties.
How do I find my MPRN for business gas?
Your Meter Point Reference Number (MPRN) is often shown on your gas bill. If you can’t locate it, we can still start a comparison using your postcode and business details, then confirm the identifier during the quoting process.
Are quotes shown including VAT?
Many business quotes are presented excluding VAT. VAT may be 20% for standard-rated businesses, while some organisations may qualify for reduced rates (such as certain charities). Always confirm how VAT is treated on your quote.
What if my business uses gas seasonally?
Seasonal users should pay close attention to the standing charge and any minimum charges. A slightly higher unit rate with a lower daily charge can be better if usage drops significantly for part of the year.
What’s the difference between fixed and variable business gas rates?
A fixed contract typically keeps your unit rate (and often standing charge) the same for the agreed term. Variable or deemed rates can change, sometimes with limited notice, which can make budgeting harder.
Trust, methodology and sources
Page accountability
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- May 2026
How we assess business gas unit rates on this page
This guide focuses on how to compare unit rates accurately rather than publishing live prices (which change frequently and depend on business-specific eligibility). Where we include numbers, they are illustrative to demonstrate the maths and trade-offs.
- Assumptions used in examples: annual kWh is known; unit rate and standing charge are fixed for the year; 365-day standing charge; VAT excluded; no additional bespoke charges.
- What can change your real quote: credit checks/deposits, meter read quality, contract start date, contract structure, and supplier availability.
- Limitations: business energy contracts can include terms that affect total cost beyond unit rate and standing charge. Always review the full written contract and sales confirmation.
Independent UK sources we rely on
- Ofgem (UK energy regulator) – regulatory context and consumer/business energy guidance
- Citizens Advice: Energy – practical guidance on bills, switching and complaints
- GOV.UK – business guidance and official information (including VAT and support schemes where applicable)
We link to external sources for reference. Supplier terms and market conditions can change at short notice.
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