Rolling Business Energy Contracts UK

What Is a Rolling Business Energy Contract?

A rolling business energy contract (sometimes called an “out-of-contract” rate) is what your supplier automatically places you on when your fixed-term deal expires and you have not agreed a new one. Instead of negotiating a fresh rate, your supplier simply keeps supplying energy — but at their standard variable tariff, which is almost always significantly more expensive than anything you would have agreed to voluntarily.

In plain terms: your fixed deal runs out, you do nothing, and your supplier quietly starts charging you far more. No letter in bold. No alarm bell. Just a higher bill.

Quick Answer: How Much Does a Rolling Contract Cost?

Rolling and out-of-contract rates for UK businesses can cost up to 80% more than a negotiated fixed-rate contract, according to data published by businessenergyuk.com. Most UK SMEs stuck on rolling rates are overpaying by between 15% and 40% compared to what they could achieve by switching. The average Telnergy client saves 18% against their renewal quote — and switching typically takes less than 24 hours once you decide to act.

Why Your Supplier Loves a Rolling Contract (and Why You Should Not)

Let us be direct: a rolling contract is good for one party in this arrangement, and it is not you.

When your fixed contract ends, your energy supplier does not need to work hard to keep your business. They simply roll you onto their standard variable rate — which Ofgem describes as a “deemed rate” when it is applied without your explicit agreement — and collect the difference. The longer you stay, the more they earn.

Suppliers are not breaking any rules by doing this. But that does not make it fair, and it certainly does not mean you have to accept it.

According to Ofgem’s business energy guidance, suppliers must inform you of contract end dates, but the notification process is often buried in correspondence that is easy to miss. Many business owners only discover they have been on a rolling rate when they finally compare their bill to a market quote — and the shock can be considerable.

The Numbers That Should Make You Angry

Rolling and out-of-contract rates are typically 40–80% higher than negotiated contract rates (businessenergyuk.com)
The average UK SME spends between £8,000 and £25,000 per year on gas and electricity
At an 80% premium, a business normally paying £12,000/year could be paying over £21,000 on a rolling rate
Telnergy clients save an average of £38 per day on gas alone after switching from rolling rates

These are not edge cases. This is what happens to thousands of UK businesses every year — simply because no one told them to act before the deadline.

What Exactly Is a Rolling Contract? The Full Definition

A rolling contract in business energy is an ongoing supply arrangement with no fixed end date. It continues month-to-month (or sometimes quarter-to-quarter) until either party gives notice to end it.

Rolling contracts are different from:

Fixed-term contracts — where the price is locked for 1–5 years
Deemed contracts — which are imposed automatically when you move into a new premises or your supplier changes without your input (see our deemed contract guide)
Out-of-contract rates — technically the same situation as a rolling rate, just described differently (see our out-of-contract energy guide)

The word “rolling” makes the arrangement sound flexible and reasonable. In practice, the rates are set by the supplier without competitive pressure. They have no incentive to make them attractive.

How Does a Business End Up on a Rolling Contract?

The most common route is simple inaction at contract renewal time. Here is the typical sequence of events:

You signed a 1, 2, or 3-year fixed-price energy contract.
The contract had a renewal window — usually a period ending 30 to 90 days before the expiry date during which you needed to either renew or give notice to switch.
You missed that window. Perhaps the renewal letter got lost in admin. Perhaps you were busy running a business.
The contract expired. Your supplier started billing you at their standard variable (rolling) rate.
You are now on a rolling contract.

Some suppliers also lock businesses in via auto-rollover clauses — where the contract automatically renews at whatever rate the supplier decides unless you actively opt out within the renewal window. The Dispute Resolution Ombudsman (formerly the Energy Ombudsman) has noted that these clauses can be particularly harmful to small businesses who are not aware of the terms.

Notice Periods: The Detail That Catches People Out

Most business energy contracts require you to give notice 30 to 90 days before the contract end date if you want to switch supplier. Some contracts specify even longer windows.

This is not the same as giving 30–90 days’ notice on the date your contract ends. You need to act before it ends — often well before.

If you are already on a rolling contract, the notice period is typically 30 days, though this varies by supplier. Check your current contract terms or contact your supplier directly to confirm.

Key takeaway: the best time to act is at least three months before your renewal date. The second best time is right now.

How to Get Off a Rolling Business Energy Contract: Step by Step

Step 1: Find Your Current Contract Terms

Locate your current energy contract or check your online account. You need to know:

– Whether you are on a fixed-term or rolling/out-of-contract rate

– What notice period is required to switch

– Whether there are any exit fees (rolling contracts typically have none, but check)

If you cannot find this information, call your supplier. They are legally required to provide it.

Step 2: Check the Market

Do not go directly back to your current supplier for a renewal quote. That is exactly what they want — and their renewal quote is almost never competitive.

Instead, use an independent energy broker or consultant who will go to market and present offers from multiple suppliers simultaneously. This is called tendering — and it is how businesses get genuinely competitive rates.

At Telnergy, we tender your energy requirements to more than 21 UK gas and electricity suppliers simultaneously. We present you with a clear comparison of the best available offers, typically within 24 hours. Our fee is agreed upfront and disclosed in writing before you sign. It may be paid directly or collected via the supplier as a transparent p/kWh uplift.

Step 3: Compare Offers and Select a Supplier

A proper market tender will typically give you:

– Multiple price options across different contract lengths (1, 2, 3, 4, or 5 years)

– A range of fixed and flexible products

– Visibility of exactly what unit rate and standing charge you will pay

Look beyond just the unit rate. Consider contract length, exit clauses, and the supplier’s customer service track record.

Step 4: Serve Notice and Switch

Once you have selected a new deal, your new supplier (or your broker on your behalf) will handle the switching process with the network operator. You do not need to contact your old supplier to initiate a switch — the new supplier handles this.

If you are already on a rolling contract, expect the switch to complete within 4–6 weeks of signing a new contract. During this time, your old supplier continues to supply you at the rolling rate, so the faster you act, the more you save.

Step 5: Monitor Your First Bill

After switching, check your first bill on the new contract carefully. Confirm the unit rate and standing charge match what was agreed. If there are discrepancies, raise them immediately — and if your old supplier attempts to charge exit fees that were not disclosed, this is grounds for a formal complaint.

Real-World Savings: What Businesses Are Actually Achieving

These are not projections. These are documented results from Telnergy clients:

Restaurant group (14 sites): Saved £14,000 per year after Telnergy tendered all sites simultaneously
Hotel: Saved £6,435 per year by switching from a rolling contract to a tendered fixed deal
Secondary school: Saved £8,200 per year — money that went back into the school budget

The pattern is consistent: businesses that have been on rolling or untendered rates for more than 12 months almost always find meaningful savings when they go to market properly.

Use Case Scenarios

Hospitality: Restaurants, Hotels, and Pubs

High-energy businesses like restaurants and hotels are particularly exposed to rolling contract overcharging because their energy spend is significant and continuous. A restaurant running large kitchen equipment, refrigeration, and lighting across multiple shifts cannot absorb an 80% energy premium without it showing up on the bottom line.

If you operate multiple sites, the risk compounds. Each site might have ended up on a rolling rate at a different time, with different suppliers, making the total overspend invisible in day-to-day management.

Telnergy’s multi-site energy management service handles all sites in a single tendering exercise, ensuring consistent contract end dates and removing the admin burden entirely.

Schools and Educational Establishments

School budgets are under intense pressure. Energy is one of the largest controllable costs for most educational establishments, and rolling contracts represent a significant and entirely avoidable drain on resources.

Schools are also particularly vulnerable to missing renewal windows because energy procurement is often handled by a business manager with a wide range of responsibilities. A missed renewal letter during term time is entirely understandable — but the financial consequence can be thousands of pounds.

Telnergy works with schools directly and through local authority procurement frameworks. Our zero-fee model means every saving goes straight back to the school.

Multi-Site Businesses and Property Managers

If you manage energy across multiple premises — whether as a business owner or a property manager — you may have a patchwork of contracts at different stages of their life cycles. Some may already be on rolling rates. Others may be approaching renewal windows without your knowledge.

A structured audit by Telnergy will map every supply point, identify which are on rolling rates, and create a tendering schedule that keeps you ahead of renewal windows going forward.

Your Rights When You Are on a Rolling Contract

Under Ofgem’s non-domestic supply licence conditions, your energy supplier must:

Provide clear information about your contract terms, including the end date and notice requirements
Notify you of any changes to your rolling rate with reasonable advance notice
Allow you to switch supplier once you have served the required notice period
Not impose unreasonable exit barriers

If you are a small business with fewer than 50 employees, you also have access to the Dispute Resolution Ombudsman, whose jurisdiction was extended in December 2024 to cover a wider range of small business disputes. If your supplier refuses to provide contract information, imposes undisclosed exit fees, or fails to process your switch in a reasonable timeframe, you can escalate to the Ombudsman at no cost.

For more complex disputes — including retrospective billing on rolling rates — Telnergy offers an energy mediation service that has helped clients recover overcharges directly from suppliers.

TPI Code Compliance: Why It Matters When Choosing a Broker

Not all energy brokers operate to the same standard. The Third Party Intermediary (TPI) Code of Practice sets minimum standards for how brokers must treat business customers — including transparency about commission, clarity on contract terms, and handling of complaints.

Telnergy is fully TPI Code compliant and a Dispute Resolution Ombudsman member. This means:

– We are required to disclose our commission to you on request

– We cannot hide charges or fees in the contract terms

– You have access to independent dispute resolution if you are ever unhappy with our service

When you engage any energy broker, ask them directly: are you TPI Code compliant? If the answer is anything other than a clear yes, think carefully.

Frequently Asked Questions

How much more expensive is a rolling energy contract?

Rolling and out-of-contract business energy rates can be 40–80% more expensive than a comparable fixed-term negotiated contract, according to businessenergyuk.com. Ofgem has also highlighted the significant gap between default and negotiated rates for non-domestic customers. The exact premium depends on your supplier and the prevailing wholesale market, but it is almost always substantial.

Can I switch energy supplier while I am on a rolling contract?

Yes. Once you are on a rolling contract, you are generally free to switch with 30 days’ notice (though always check your specific contract terms). There are typically no exit fees on a rolling rate, which means there is no financial barrier to switching — only the time it takes to go to market and select a new deal.

What is the notice period for a business energy rolling contract?

Notice periods for rolling business energy contracts are typically 30 days, though some suppliers require longer. For fixed-term contracts approaching renewal, notice must usually be given 30 to 90 days before the contract end date. Missing this window is how most businesses end up on a rolling rate in the first place.

Do I need to contact my old supplier to switch?

No. Once you have signed a new contract with a new supplier, they handle the switch through the network operator. Your old supplier will receive a transfer notice automatically. You may choose to inform them as a courtesy, but it is not required.

Will switching disrupt my energy supply?

No. Switching business energy supplier in the UK does not interrupt your supply. Your energy continues to flow through the same pipes and wires — only the billing entity changes. The switch is an administrative process, not a physical one.

How does Telnergy charge for its energy brokering service?

Telnergy’s fee is agreed upfront and disclosed in writing before you sign. It may be paid directly or collected via the supplier as a transparent p/kWh uplift, typically 1–2p per kWh on electricity and approximately 0.5p–1p per kWh on gas. On larger consumption and multi-site contracts, we agree a lower rate or a capped fee — a p/kWh uplift that makes sense at 50,000 kWh would be indefensible at a million, and we price accordingly. We are TPI Code compliant, and the key point is that our interests are aligned with yours: we only get paid when you choose to proceed with a better deal.

The Bottom Line: Every Month on a Rolling Contract Is Money Leaving Your Business

Rolling contracts are not inevitable. They are the result of a system designed to benefit suppliers when customers are not paying attention. The fix is straightforward: go to market, get competitive quotes, and switch.

Telnergy has been doing this for UK SMEs for 22 years. We tender 21+ suppliers, return results in 24 hours, and charge you nothing for the service.

Contact Telnergy today to get a free market comparison and find out exactly how much your rolling contract is costing you.

Sources and References

Ofgem — Non-domestic energy supply licence conditions and consumer protections: ofgem.gov.uk
businessenergyuk.com — Rolling and out-of-contract rate analysis: rolling rates cost up to 80% more than agreed rates
Energy Ombudsman — Small business dispute resolution, jurisdiction extended December 2024 to businesses with fewer than 50 employees: energyombudsman.org
Ofgem — Energy advice for businesses, including rules for Third Party Intermediaries: ofgem.gov.uk
Citizens Advice — Business energy contracts and switching rights: citizensadvice.org.uk

Telnergy Limited is an independent commercial energy consultancy established in 2002, based in Christchurch, Dorset. Ofgem registered TPI · ADR Ref E3561 · CRN 04576876.

Rolling Business Energy Contracts UK: What They Cost You and How to Escape