The cheapest business energy deal is rarely the one flashing the lowest pence-per-kWh on a glossy comparison page. That headline figure is merely the sticker price, and no sensible owner would buy a van on the sticker alone. Your true bill is the unit rate multiplied by every kWh you burn, plus 365 days of standing charges, plus the Climate Change Levy, all crowned with 20% VAT. A tariff that looks like a bargain can quietly bleed hundreds, even thousands, of pounds from your business before the first invoice lands.
Then there’s the sneaky extra nobody advertises. Many brokers slip their commission straight into your unit rate, often 0.5p to 2p per kWh, and on a busy site that silent markup can dwarf the savings you thought you’d won. These hidden costs leave fingerprints, though, and you can learn to spot them. Below, we’ll show you exactly how to expose the real price of any quote before your signature binds you to it for years.
Define Cheap Business Energy Before You Compare
Cheap business energy isn’t the lowest number on a comparison site’s shiny banner. That’s the showroom sticker, not the drive-away price. A low unit rate paired with a fat standing charge can cost you more over twelve months. Take a small shop using 8,000 kWh of electricity a year. A 21p per kWh deal with a £1.50 daily standing charge comes to £2,227.50 before taxes. A 24p per kWh deal with a 40p daily standing charge comes to £2,066. The “cheaper” unit rate costs £161.50 more. Funny, that.
So define “cheap” first. Cheap commercial energy means the lowest total annual cost, including standing charges, VAT and Climate Change Levy, currently 0.801p per kWh on electricity. On that same 8,000 kWh, CCL adds £64.08, and 20% VAT then pushes the 24p deal to £2,556.10 and the 21p deal to £2,749.90. It also means a contract that fits your appetite for risk. Fixed gives certainty. Variable gives you a wobbly steering wheel.
Every business like yours, from corner cafés to workshops, faces the same maths. Cheap business gas follows identical rules. A 6p per kWh gas deal with a 30p daily standing charge on 15,000 kWh comes to £1,009.50 before CCL (0.672p per kWh, or £100.80) and VAT. Ask whether business energy quotes include VAT and CCL, then compare projected yearly totals. Simple. Enerbiz offers transparent pricing and compares over 20 suppliers to help SMEs find competitive rates. Shall we get comparing?
Gather Your Usage Data and Contract End Date
Before you compare a single quote, grab your numbers, because a quote built on guesswork is like a sat-nav with no postcode. You’ll end up somewhere, just not where you wanted.
We’ve all been there. Gather these:
- 12 months of kWh figures, so seasonal demand shows up.
- Actual meter readings, not supplier estimates.
- Your MPAN (electricity) and MPRN (gas).
- Your contract end date, notice period and switching window.
- Latest bills, with site address and account number.
Miss your window and you’ll roll onto a default contract, which costs noticeably more. Switching before a fixed term ends can also trigger exit fees, so time your move carefully.
A small business using 15,000 kWh a year on a fixed rate of around 25p/kWh pays roughly £3,750 before standing charges. On an out-of-contract rate of 40p/kWh, that jumps to about £6,000, and standing charges can rise from around 60p a day (£219 a year) to over £1 a day (£365+ a year).
Suppliers must send renewal details 60 days before your term ends. Rely on that? Bold. Accurate data gets you sharper commercial energy quotes, and a fair shot at cheap business electricity from any business energy supplier.
For larger sites, a bespoke tendering process can also help you compare offers on clearer terms and improve the quality of the final recommendation.
Compare Unit Rates and Standing Charges
Once your usage data’s sorted, you can compare quotes properly, and the first trap is staring at the unit rate like it’s the whole story. It isn’t. Every commercial energy supplier charges twice: a price per kWh, plus a daily standing charge.
Don’t stare at the unit rate like it’s the whole story. Every commercial supplier charges twice: per kWh, plus a daily standing charge.
October 2026 electricity ran £0.261 to £0.284/kWh. Gas sat at £0.085 to £0.088/kWh. Standing charges? Electricity swung from £0.58 to £1.73 a day. A £1.00 daily charge adds £365 a year, whether you burn anything or not.
Run the sum: annual kWh times unit rate, plus standing charge times 365. At 20,000 kWh and £0.27/kWh, that’s £5,400. Add a £1.00 daily standing charge and you’re at £5,765 before extras.
Low-use shop? The standing charge bites. At 5,000 kWh and £0.27/kWh, you’d pay £1,350 in usage, but a £1.73 daily charge tacks on another £631.45, nearly a third of the £1,981.45 total.
Chasing the cheapest business gas? Same maths. At 30,000 kWh and £0.087/kWh, that’s £2,610, plus £219 for a £0.60 daily charge, totalling £2,829. Compare commercial utility rates on total annual cost, and you’ll join the savvy lot. Enerbiz’s energy data analytics can help you standardize usage data and compare offers on a fair like-for-like basis.
Choose Fixed or Flexible Business Energy Rates
Fixed rates lock your unit price for the whole term, usually one to three years, so you know what you’re paying even if wholesale markets go haywire.
Flexible contracts let you buy energy in chunks, which can pay off if you’ve got big consumption and someone who actually watches the market. Without that someone, you’re basically gambling with the company’s money, so ask yourself honestly: are you a seasoned energy trader, or just a bloke with a spreadsheet and a hunch?
A good supplier review also helps you compare unit rates and standing charges clearly before you commit.
How Fixed Rates Work
Although wholesale markets wobble like a shopping trolley with a dodgy wheel, a fixed-rate contract keeps your unit rate and standing charge exactly where you signed them for the whole term.
For example, you might lock in 26p per kWh and a 60p daily standing charge for two years.
Your business electricity supplier can’t nudge the price up mid-contract. Simple, isn’t it?
- Unit rates stay put, whatever the wholesale market does. 26p per kWh stays 26p per kWh.
- Standing charges still apply daily, even on closed days. At 60p a day, that’s about £219 a year, whether you open or not.
- Your total bill still moves with consumption. Use 1,500 kWh one month and 1,000 kWh the next, and your bill drops from £390 to £260 in unit charges.
- Seasonal usage still makes some months dearer. A shop paying £250 in June could easily see £450 in December once heating and lighting kick in.
- You’re outside the domestic price cap.
Don’t confuse a fixed rate with a fixed bill. That’s like thinking cruise control caps your fuel spend.
Budget by multiplying estimated consumption by your unit rate, then add the standing charge. A business using 15,000 kWh a year at 26p would pay £3,900, plus £219 in standing charges, for roughly £4,119 before VAT and the Climate Change Levy.
The catch? If wholesale prices fall, you’re stuck paying the old rate, risk premium included.
If new deals drop to 22p per kWh, that same 15,000 kWh costs you £600 more than a newcomer would pay. A quarterly review can help compare your actual savings against a baseline and spot when a renewal opportunity may improve your budget.
When Flexible Rates Suit
Fixed rates are the sensible family saloon: dull, dependable, and nobody’s embarrassed to be seen in one.
Flexible rates are the track-day special. Brilliant, if you know what you’re doing. Otherwise, mind the barriers.
Flexible suits you if you use serious volumes, can stomach price swings, and employ someone who actually understands the market. Think a site burning 2 GWh a year, with an annual energy bill north of £500,000, and either an in-house energy buyer on £50,000–£70,000 a year or a specialist consultancy charging £5,000–£15,000 annually to manage the trades.
Ofgem points big consumers towards structured contracts for a reason. You buy in tranches, not one lump, so you spread the risk and average out the price. Clever, isn’t it?
Don’t expect miracles. Wholesale is roughly 40% of your bill, so a sharp trade won’t halve it.
On that £500,000 bill, wholesale accounts for about £200,000. Beat the market by 10% and you save around £20,000, not £250,000.
If your cashflow can’t survive a price spike, stay in the saloon. Should wholesale power leap from £100/MWh to £300/MWh for a quarter, an unhedged 500 MWh could add £100,000 to your costs. Neglect the purchasing, and you’ll pay for it at the pump.
Match Contract Length to Business Energy Rates
Contract length is the gearbox of your energy deal, and picking the wrong ratio will leave you either stalling or screaming. Fixed terms of 12, 24 or 36 months each suit a different road. Forum rumours say “always go long.” Nonsense. Does your business stay put?
- 12 months: You’ll reassess often and catch falling prices sooner, but renewals bring fresh risk. Expect unit rates of around 25p–28p/kWh for electricity.
- 24 months: A sensible middle gear for steady budgets, typically priced at around 24p–27p/kWh.
- 36 months: Great shield against price spikes, painful if markets drop. Rates of around 23p–26p/kWh can look tempting, but you’re locked in if wholesale prices fall.
- Relocating or closing? Exit fees will bite, often £500–£2,000+ depending on remaining term and usage, so stay short.
- Unstable usage? Forecast badly and you’ll pay imbalance charges, which can add hundreds of pounds a year on flexible or volume-tolerance contracts.
Compare total cost, not just unit rate. A small business using 15,000kWh a year at 26p/kWh pays £3,900, but a 60p/day standing charge adds another £219, bringing the total to £4,119. A cheaper unit rate with a £1.20/day standing charge can quietly cost more.
Diarise your end date, because missing it dumps you on deemed or out-of-contract rates of around 35p–50p/kWh. On the same 15,000kWh, that’s up to £7,500 a year. Don’t coast into that ditch.
Spot Broker Commissions Hidden in Your Quote
Broker commission isn’t a mystery fee hiding under the bonnet. It’s usually baked straight into your unit rate. The supplier pays the broker, then you repay the supplier, pence by pence. Sneaky? Not illegal, just quietly expensive.
Here’s how savvy business owners spot it. Ask for an itemised quote, then compare it with the Principal Terms. Since 1 October 2024, suppliers must show third-party costs per kWh for every non-domestic customer. If the final rate differs from the quote, say 26.5p/kWh instead of the 25p/kWh you were promised, you’ve found your gremlin. Any broker should give you their commission in writing on the quote, in p/kWh and £ per year.
Do the maths. A 1.5p/kWh commission on 100,000 kWh costs you £1,500 a year, or £4,500 over a three-year contract. On a £25,000 annual electricity bill, that’s 6% going straight to the middleman.
Commissions commonly range from 0.5p to 2p/kWh, so the same usage could cost you anywhere from £500 to £2,000 a year. Ask your broker for the exact figure in pence per kWh. If they waffle, you’ve got your answer, and you’re in very good company kicking those tyres.
Avoid Cheap Business Energy Deals With Costly Catches
A cheap headline rate is the shiny paint job on a car with a dodgy gearbox. It looks lovely on the forecourt at £4,995. Six months later, you’re stuck on the hard shoulder facing a £2,000 repair bill.
Check the small print before you sign. Does the quote hide any of these?
- A promotional rate that expires, then flips to variable pricing. A teaser rate of 21p/kWh for the first six months can jump to 32p/kWh or more. On 15,000 kWh a year, that’s roughly £825 extra over the remaining six months.
- Standing charges that quietly outweigh the low unit rates. Say you’re a small café using 5,000 kWh a year. A deal at 18p/kWh with a £1.20 daily standing charge costs about £1,338. A deal at 22p/kWh with a 45p daily standing charge costs about £1,264. The “cheaper” unit rate loses by £74 before VAT.
- Understated consumption that flatters your annual saving. A quote that assumes 8,000 kWh when you actually use 15,000 kWh might promise a £400 saving that disappears once your real usage is billed.
- Auto-renewal onto a fresh 12-month contract at a higher rate. A rollover from 24p/kWh to 35p/kWh adds around £1,650 a year on 15,000 kWh.
- Exit fees if you switch before the term ends. These are often a flat £250 to £500, or are charged per kWh remaining on the contract. On a large site, that can easily run into four figures.
Don’t trust forum rumours that “it’s all the same anyway”. It isn’t. Ask for the contract schedule, compare the full invoice cost, and diarise your renewal date. Miss it, and you’ll pay deemed rates, which are typically 45p to 60p/kWh with standing charges above £1.50 a day.
That can mean £3,000 or more a year on a modest 15,000 kWh usage. If a supplier mishandles your billing along the way, eligible small businesses can request independent dispute resolution once the supplier’s complaints process ends or eight weeks have passed.
Vet Business Energy Suppliers Beyond Price
Suppliers should send you a decision letter or a letter of deadlock within eight weeks of your complaint. Complaints stuck after eight weeks? The Energy Ombudsman is your breakdown cover, and it costs you nothing to use. And “100% renewable”? Ask for REGO certificates, not slogans. A genuine green tariff often adds £5 to £15 per MWh, so make sure you’re getting what you pay for. Do this and you’re in the savvy club.
Price gets you through the door, but it won’t keep the wheels on once you’re driving. A quote of 25p/kWh with a 45p daily standing charge can cost you more than one at 27p/kWh with a 20p charge if your usage is low. So vet suppliers like you’d vet a used motor. Check authorisation, then confirm your microbusiness protections apply (under 10 employees, for starters). On an evergreen contract, you get a 30-day notice cap and acknowledgement within five working days. Without that cap, you could be stuck on out-of-contract rates that run £50 to £150 a month above a fixed deal.
Demand itemised bills: unit rates (around 24p to 28p/kWh for electricity and 6p to 7p/kWh for gas), standing charges (typically 40p to 80p a day), VAT (20%, or 5% if your usage is low), and the Climate Change Levy (about 0.775p/kWh on electricity). No itemising? No deal. Ask for a smart meter, which is usually installed free, and they owe you an appointment within 60 working days, or £40. Back-billing past 12 months is off the table for microbusinesses, so a surprise £2,000 catch-up bill for three years of estimates shouldn’t land on your desk.
Time Your Switch to Lock In Cheap Business Energy
Vetting a supplier is half the job. Timing is the other half, and you can’t afford to coast on it. Miss your switching window and you’re stuck, like a clutch that won’t bite.
Here’s your pit-stop checklist:
- Start comparing three to six months before your fixed term ends. Comparison sites and brokers are usually free to use, though brokers often take a commission built into your unit rate, typically around £0.01 to £0.02 per kWh.
- Expect renewal information about 60 days out, if you’re a microbusiness.
- Know your notice period; for microbusinesses, it’s 30 days maximum.
- Dodge rollover contracts, which can lock you in for 12 months at higher rates. A fixed deal at around £0.24 per kWh can roll onto £0.30 per kWh or more. For a small café using 20,000 kWh of electricity a year, that’s roughly £1,200 extra, before higher standing charges of £0.60 to £0.80 per day.
- Shortlist tariffs early, so you can pounce when prices dip.
Wholesale prices swing wildly. Gas ran from £0.97 to £2.16 per therm in 2026.
Waiting for the “perfect” moment? That’s forum fantasy. Chasing it leaves you idling on default rates, which can easily add £100 or more a month to a typical small business bill.
Get a Transparent Business Energy Quote
When a quote shows only a unit rate, it’s a shiny bonnet with no engine under it. You wouldn’t buy a £25,000 van that way, so don’t buy power that way. Ask for the standing charge, the annual kWh assumption and the estimated annual cost. A quote of £0.245 per kWh means little without knowing it comes with a £0.60 daily standing charge, assumes 15,000 kWh a year and totals around £4,817. Same premises, same meter, same start date, or it’s a guess, not a comparison.
Then check the extras. Does the price include VAT, usually 20%, and the Climate Change Levy, £0.00801 per kWh on electricity from 1 April 2026? On 15,000 kWh, that levy alone adds about £120 before VAT. Demand written broker commission disclosure too. An uplift of £0.01 per kWh costs you £150 a year, or £450 over a three-year contract. Purely shows its margin separately on every quote alongside wholesale and non-commodity costs, so there is no hidden broker commission. Savvy businesses do this routinely, and you’re one of them.
Finally, do the sums yourself: annual kWh times unit rate, plus standing charges, plus taxes. For example, 15,000 kWh at £0.245 is £3,675. Add £219 in standing charges (365 days at £0.60) and £120.15 in Climate Change Levy for a subtotal of £4,014.15. Then add £802.83 VAT for a total of £4,816.98. If it doesn’t add up, ask why. Get it written.
Set a Renewal Reminder After Switching
Switching supplier isn’t the finish line, it’s the pit stop. Skip the next lap and you’ll drift onto deemed rates, which can cost more than your negotiated deal. A small business paying 25p/kWh on contract could see deemed rates of 35p/kWh or more. On 15,000 kWh a year, that’s roughly £1,500 extra. Fancy that. Suppliers typically send contract-ending notices 42–49 days before your end date, or 60 days for micro businesses.
Set up your renewal system now, while the paperwork’s fresh:
- Record your start date, end date, and termination notice period.
- Add calendar reminders at 90, 60, and 30 days before expiry.
- Use a shared business calendar, not your personal one. Microsoft 365 Business Basic costs around £4.90 per user per month, and Google Workspace Business Starter costs around £7 per user per month. Both include shared calendars.
- Name an owner and a backup, because holidays happen.
- Check for rollover clauses that renew you for up to 12 months. Being locked into an uncompetitive rate for a year can easily add £500 to £2,000 to a typical small business’s energy bill.
Miss the window and you’re properly stuck. Keep proof of delivery when you serve notice, since suppliers must acknowledge it within five working days. Royal Mail Signed For costs about £3, and a free email with a read receipt also works if your contract allows email notice. Stay on top, and you’ll join the sensible lot.
Frequently Asked Questions
Can I Switch Business Energy Supplier if I’m in Arrears With My Current One?
Yes, you can switch while you’re in arrears, though your current supplier might object over the debt or contract. Don’t worry, many businesses have been there; ask for written confirmation and agree a payment plan.
What Is a Deemed Contract and How Much More Does It Cost?
A deemed contract is the default arrangement that starts when you use energy at premises without agreeing a supplier contract. You’re not alone; you’ll typically pay about 65% more, roughly £2,550 yearly on 15,000 kWh.
Do Climate Change Levy Exemptions Affect Which Business Energy Supplier Is Cheapest?
Yes, they do. Picture CCL as a village toll gate you’re not crossing alone; fellow businesses share that road. Exemptions narrow supplier gaps, but you’ll still compare unit rates, standing charges, and contract terms together.
Can a Business With Multiple Sites Use One Supplier and Contract?
Yes, you can put all your sites under one multi-site contract, as long as your business or related companies own or occupy them. You’ll join one supplier family, get one invoice, and renew everything together.
What Happens to My Supply if My Chosen Supplier Goes Bust?
Your gas and electricity won’t stop. Ofgem steps in and appoints a replacement supplier, so you’re not facing this alone. You’ll move to a deemed rate, so take meter readings and switch when you’re ready.
