Business Energy Contract Renewal UK: Timing, Notice Periods and Negotiation Leverage

For most small businesses, the energy contract renewal cycle arrives with little fanfare and less preparation. The fixed term expires, rates change, and the business often discovers months later that it is paying substantially more than it needed to. The renewal process is not complicated, but it is structured in a way that rewards preparation and penalises passivity. Understanding when the window opens, what suppliers are legally required to tell microbusiness customers, and how to use the open market as leverage changes the outcome materially.

When the renewal window opens and why timing is everything

Commercial energy contracts specify a termination notice period - commonly 30, 60, or 90 days - that determines how far in advance a customer must notify the supplier if it does not intend to renew. This window is not a formality. Missing it typically results in automatic rollover into a new fixed term or a move onto the supplier's variable out-of-contract rate, both of which are almost always materially more expensive than a renegotiated or re-tendered contract.

The notice period clock runs backward from the contract end date. A contract expiring on 31 December with a 90-day notice requirement means the termination notice must be served by 2 October at the latest. Many businesses discover this constraint only when they attempt to switch within the final 30 days and find the option blocked by the contract terms.

Engaging the market 90 to 120 days before expiry provides time to obtain multiple competitive quotes, compare them against the renewal offer from the incumbent supplier, and use any competing offer as leverage in renegotiation. Wholesale energy prices are volatile, and the market rate available at 90 days out may differ significantly from the rate available at 30 days - in either direction. Early engagement does not commit a business to switching; it provides options.

What Ofgem SLC 7A requires suppliers to disclose to microbusinesses

Standard Licence Condition 7A of Ofgem's standard conditions of electricity and gas supply licences sets out specific obligations for suppliers dealing with microbusiness customers at the point of renewal. The condition requires that, within a defined period before the contract end date, the supplier must send the microbusiness customer a written notice that includes:

• The date on which the current contract ends
• The date by which the customer must notify the supplier if it does not wish to renew (the termination notice deadline)
• The rates that will apply after the contract ends if no action is taken, whether a new fixed term or a variable rate
• A statement that the customer has the right to switch to a different supplier
• Contact details for the supplier to discuss renewal options

The notice must be sent between 49 and 10 days before the termination notice deadline, not before the contract end date. This is a common source of confusion: the SLC 7A notice is triggered by the termination deadline, not by the contract expiry date. A supplier that fails to send a compliant SLC 7A notice has breached its licence conditions. Microbusiness customers who do not receive this notice should raise a formal complaint with the supplier, which may result in the supplier releasing the customer from any rollover that occurred as a result of the failure.

Understanding termination notice: form and content requirements

A termination notice in a business energy contract is not simply an email saying the business wants to leave. The contract will specify the required form - usually written notice to a named address or email, sometimes requiring a specific reference number or account identifier. Notices served to the wrong address, in the wrong format, or without the required account details may not be treated as valid by the supplier.

Best practice for serving a termination notice:

1. Read the contract to identify the exact form required and the address to which notice must be sent
2. Send the notice by a method that creates a delivery record - recorded post, or email with a read receipt request
3. Include the account number, MPAN or MPRN, premises address, and the explicit statement that the notice is a termination notice served under the contract
4. Retain a copy of the notice and the delivery confirmation
5. If the supplier does not acknowledge receipt within five working days, follow up in writing and request written confirmation that the notice has been received and recorded

A termination notice that has been validly served does not commit the business to switching. It preserves the option to switch while also allowing renegotiation with the incumbent supplier. Suppliers often produce more competitive renewal offers once they know the customer has served notice.

How renewal quotes compare to the open market

Supplier renewal quotes are not market-tested prices. They are the supplier's opening position, calculated to retain the customer at a margin the supplier finds acceptable. For a business that has been a good payment customer for two or more years, the incumbent supplier has zero acquisition cost, no credit risk premium, and no transfer cost. These savings do not automatically flow to the renewal rate unless the customer makes them the basis of a negotiation.

Obtaining quotes from two or three alternative suppliers provides the data needed to assess whether the incumbent's renewal offer is competitive. If the open market rate is materially lower, the business has three options: switch to the cheaper supplier, present the competing quote to the incumbent and request a matching offer, or use a broker to access supplier panels the business cannot easily approach directly.

When comparing quotes, the comparison must cover unit rate, standing charge, and contract length on a consistent basis. A lower unit rate on a 36-month contract is not directly comparable to a higher unit rate on a 12-month contract without accounting for the price risk embedded in the longer term. Estimated annual cost figures are the most practical basis for comparison.

The commercial leverage available before and after serving notice

A business that has served a valid termination notice but has not yet signed with an alternative supplier is in its strongest negotiating position. The incumbent supplier knows it will lose the revenue unless it improves its offer. This leverage exists only within the window between serving notice and the contract end date. Once the contract expires and the business is on rollover or out-of-contract rates, the leverage largely disappears - the supplier has already secured the relationship on new terms, and the business must now negotiate from a weaker position or switch.

Leverage factors that strengthen the renewal negotiation include:

• A documented competing quote at a lower rate from a credible alternative supplier
• A clean payment record with the incumbent supplier over the full contract term
• High annual consumption, which represents meaningful revenue to the supplier
• Multiple supply points, which can be bundled as a package for a better aggregate rate
• Flexibility on contract length - willingness to commit to a longer term in exchange for a lower rate

What happens if no action is taken before the deadline

If neither a termination notice nor a new supply agreement is in place by the termination deadline, the contract outcome depends on what the existing contract says will happen. The most common outcomes are:

• Automatic rollover to a new fixed term: the contract extends by the same period (or a shorter period) on the rates set out in the SLC 7A notice. The customer is now locked into a new term with an early exit fee if it wants to leave.
• Move to the supplier's variable rate: the contract expires and the customer defaults onto the supplier's standard variable commercial rate, which is typically above market. There is no fixed term in this scenario and the customer can switch, but the rates in the interim may be significant.

For microbusiness customers who did not receive the SLC 7A notice, the rollover may be challengeable. Ofgem has published guidance confirming that suppliers cannot enforce rollover terms against microbusiness customers where the required advance notice was not properly given. The appropriate route is a formal complaint to the supplier, escalated to the Energy Ombudsman if unresolved within eight weeks.

Frequently asked questions

Editorial disclaimer: This article explains business energy contract renewal rules based on Ofgem licence conditions and contract law principles. It does not constitute legal or commercial advice for any specific contract situation.

How far in advance should a business start looking at renewal?

Starting 90 to 120 days before the contract end date gives sufficient time to obtain and compare open-market quotes, serve a termination notice within the required window, and complete a switch if necessary. The standard industry transfer process for electricity takes approximately 17 working days from contract signing, so a business that leaves the decision until six weeks before expiry may find it operationally difficult to switch even if it wants to.

Does SLC 7A apply to all business energy customers?

Standard Licence Condition 7A applies specifically to microbusiness customers as defined by Ofgem: businesses with fewer than 10 employees, annual electricity consumption below 100,000 kWh, or annual gas consumption below 293,000 kWh. Larger commercial customers do not benefit from the mandatory renewal notification obligations in SLC 7A, though they remain subject to the contractual terms agreed at the point of signing.

Can a supplier refuse to give a microbusiness a renewal quote before the termination deadline?

A supplier has no obligation under SLC 7A to provide a renewal quote on request - the obligation is to send the required advance notice. However, a supplier that refuses to engage with renewal discussions is effectively encouraging the customer to switch. In practice, most suppliers will provide a renewal quote to any customer who requests one, as retaining the customer is commercially preferable to losing it.

What if the termination notice deadline has already passed?

If the deadline has passed and no notice was served, the customer is likely committed to the rollover terms unless it can demonstrate that the supplier failed to comply with SLC 7A (for microbusiness customers) or that the rollover clause was not clearly communicated at the point of signing the original contract. In these cases, a formal complaint to the supplier and, if necessary, the Energy Ombudsman is the appropriate route. Outside of these grounds, the contract terms will generally be enforceable.

Does a broker-arranged contract change the renewal notice obligations?

No. The SLC 7A obligations run between the supplier and the microbusiness customer regardless of how the contract was arranged. If the contract was placed through a broker, the supplier must still send the required advance notice directly to the customer. The broker has no independent obligation under SLC 7A, though some brokers proactively alert clients to upcoming renewal windows as a service. The customer should not rely on the broker for this and should track contract end dates independently.

How we verified this

This article draws on Ofgem's Standard Licence Conditions for electricity and gas supply, specifically SLC 7A as published at ofgem.gov.uk, Ofgem's published guidance on microbusiness customer protections, and the standard conditions of electricity and gas supply licences. Information on the switching timeline reflects Ofgem's faster switching reforms. No broker, aggregator, or supplier marketing content was used as a primary source.

Sources

• Ofgem: Microbusiness customer protections - ofgem.gov.uk
• Ofgem: Standard conditions of electricity supply licence - ofgem.gov.uk
• Electricity Act 1989 - legislation.gov.uk
• Ombudsman Services: Energy complaints - ombudsman-services.org

For more on rollover contracts and how to exit them, see business-energy-rollover-contract-uk. For guidance on the switching process itself, see business-energy-switching-process-uk.