Most UK businesses overpay for electricity by 20% to 40% without realising it. The markup hides inside quotes that bundle wholesale costs, supplier margins, and trading desk fees into a single, opaque unit rate.

This guide breaks down how business energy quotes work, why prices vary so dramatically between suppliers, and how to compare them without getting caught by hidden costs.

What are business energy quotes

A business energy quote tells you what a supplier will charge for your gas or electricity over a contract period. It breaks down into three parts: the unit rate (what you pay per kilowatt-hour), the standing charge (a daily fixed fee), and the contract length.

Unlike home energy tariffs, business quotes factor in your company's consumption profile, meter type, and location. Most suppliers bundle wholesale power costs, their own margins, and network charges — including new levies like the Nuclear RAB and TNUoS charges rising over 60% in 2026 — into one unit rate. This bundling makes it hard to see what you're actually paying for.

Quotes typically stay valid for just a few days because wholesale prices shift constantly. So when you receive one, the clock starts ticking.

Why compare business energy suppliers

Here's something worth knowing: prices for identical electricity vary wildly between suppliers. One might quote 28p per kWh while another quotes 22p for the same power flowing through the same wires. The difference comes down to margins, overheads, and how many people sit between you and the generator.

Suppliers count on inertia. They know most businesses won't shop around, so renewal rates tend to creep upward year after year.

PwC found 52% of UK businesses lack visibility into their overall energy spend. Comparing quotes exposes gaps you wouldn't otherwise see:

• Price transparency: Different suppliers charge different amounts for the same power

• Contract flexibility: Some offer shorter terms or more favourable exit clauses

• Hidden fee exposure: Comparison reveals markups buried in standing charges or inflated unit rates

Why business energy quotes vary between suppliers

You might wonder why two suppliers quote such different prices for the same energy. The answer lies in how the traditional supply chain works.

Wholesale market markups

Suppliers buy power on wholesale markets, then add their own margin before selling to you. Some add 15%. Others add 40%. You rarely see this markup itemised on your bill, which makes it invisible unless you know to ask.

Intermediaries and trading desks

Traditional suppliers use trading desks staffed by people who buy and sell power positions. Each layer takes a cut. A generator sells to a trader, who sells to a supplier, who sells to you. By the time power reaches your meter, several parties have extracted value along the way. It's the same intermediary model other industries ditched years ago.

Supplier overheads and margins

Sales teams, call centres, marketing budgets, and shareholder returns all get baked into your quote. Leaner operations mean lower prices. Legacy suppliers with large overheads pass those costs to customers.

How to get business energy quotes online

Getting quotes takes less time than most businesses expect. Here's how the process works.

1. Gather your business energy details

You'll want your current supplier name, annual usage in kWh (found on your bill), your MPAN number for electricity or MPRN for gas, your contract end date, and your business postcode. Having 12 months of usage data strengthens your position when negotiating.

2. Request quotes from multiple suppliers

Submit your details to several suppliers or use a comparison service. Requesting at least three quotes gives you a realistic picture of the market. Some suppliers respond within hours; others take a few days.

3. Review pricing and contract terms

Don't fixate on the unit rate alone. Compare standing charges, contract lengths, and exit fees side by side. A lower unit rate with a higher standing charge might cost more overall, depending on your usage pattern.

4. Select a supplier and switch

Once you choose a supplier, they handle the switch. Your power supply continues uninterrupted. The grid doesn't care who bills you.

Compare gas and electricity quotes for your business

Many businesses use both fuels and can bundle them with one supplier or split them between two. Dual-fuel contracts simplify administration but don't always offer the best rates. Comparing separately sometimes reveals better deals.

Gas and electricity markets operate differently. Electricity prices respond to wind output and solar generation. Gas prices track global commodity markets. Your optimal approach depends on your consumption split between the two.

Small business energy quotes

If your business uses less than 100,000 kWh of electricity or 293,000 kWh of gas annually, you qualify as a micro-business under Ofgem rules. This brings extra protections: clearer contract terms, limits on back-billing, and easier switching.

Small businesses often access simpler tariff structures. However, "simple" doesn't mean "cheap" — Cornwall Insight projects typical small business electricity bills averaging over £13,000 annually. Comparing quotes remains valuable even at lower consumption volumes. High street retailers are a good example — a 10% saving on a £5,000 annual bill puts £500 back into your business.

Large business energy quotes

Larger businesses with half-hourly meters negotiate bespoke contracts based on their consumption profile. You have more leverage, but also more complexity. Procurement teams often work months ahead of contract renewals.

Half-hourly data reveals when you use power, not just how much. Suppliers price this granularity into their quotes. Shifting consumption to off-peak periods can reduce costs, though this requires operational flexibility most businesses don't have.

Renewable and green business energy options

Green tariffs come in different forms, and the distinction matters.

Some suppliers purchase Renewable Energy Guarantees of Origin (REGO) certificates to "green" power they bought on the wholesale market. A REGO-backed tariff doesn't change where your power comes from. It's an accounting exercise.

Direct generator connections, by contrast, create a genuine link between your business and a solar farm or wind operator. A growing community of UK businesses already buys power this way. Some suppliers remove the wholesale market entirely. Businesses buy power at its true cost from generators, with no trading desk markup. Generators earn more. Businesses pay less.

What to look for when comparing business energy

Beyond price, several factors determine whether a quote represents good value.

Unit rates and standing charges

The unit rate gets the attention, but standing charges add up. A business using 50,000 kWh annually with a 50p daily standing charge pays £182.50 per year just for the privilege of being connected.

Contract length and exit fees

Longer contracts sometimes offer lower rates, but they lock you in. If wholesale prices drop, you're stuck paying the higher rate. Exit fees can run into thousands of pounds for larger contracts.

Supplier transparency and billing accuracy

Some suppliers bill based on estimates, then reconcile later. This creates cash flow surprises. Others use actual meter reads or smart meter data for accurate bills. Ask how your supplier calculates bills before signing.

Wholesale markup visibility

Most suppliers hide their markup within the unit rate. You see a single number with no breakdown. Ask whether the quote shows the true cost of power separately from the supplier's margin. If they can't or won't answer, that tells you something.

How switching business energy supplier works

Switching suppliers doesn't interrupt your power. The same electrons flow through the same wires. Only the billing relationship changes.

Notice periods and contract timing

Most contracts require notice before your renewal date, typically 30 to 90 days. Miss this window and you might roll onto a new term automatically, often at a higher rate. Set a calendar reminder.

What your new supplier handles

Your new supplier manages the entire switch. They contact your old supplier, coordinate with the distribution network operator, and set up your new account. You don't have to do anything beyond signing the contract.

Meter readings and billing transition

A final meter reading closes your old account. Your new supplier bills from that point forward. If you have a smart meter, this happens automatically. Otherwise, submit a reading on your switch date.

Compare business utility prices without the markup

The traditional model adds layers of cost that businesses never see. Wholesale traders, risk premiums, sales commissions, and supplier margins all inflate the final price.

A different approach exists. Some models connect businesses directly with generators, bypassing the wholesale market entirely. AI replaces trading desks. Bills reflect actual half-hourly consumption, not estimates.

• Direct generator connection: Power flows from source to business without intermediary traders

• Real-time pricing visibility: Businesses see what they pay and why

• Half-hourly billing accuracy: Bills match actual usage, not supplier guesswork

tem's RED product works this way. The structural result of removing layers that exist to serve the market rather than the customer? Lower costs and clearer bills.

Let's talk.

FAQs about business energy quotes

Can I switch business energy supplier if I am still in contract?

Yes, though you'll likely pay exit fees. Calculate whether the savings from switching outweigh the penalty. For large contracts, this calculation can favour staying put until renewal.

What is a deemed contract in business energy?

A deemed contract applies when a business occupies premises without arranging a supply contract. Out-of-contract rates on deemed contracts run significantly higher than negotiated rates. If you've moved into new premises, arrange a proper contract immediately.

How long does switching business energy supplier take?

Switching typically takes two to six weeks. Your new supplier manages the process. Your power supply continues without interruption throughout.

Do I need to inform my current supplier before switching?

Your new supplier handles communication with your old supplier. However, check your contract for notice requirements. Some contracts require you to give notice even when switching.

Can a business buy energy directly from a generator?

Yes. Some suppliers connect businesses directly to renewable generators, removing wholesale market intermediaries. tem's RED product does exactly this, giving businesses access to power at its true cost while generators earn better returns.