The Broker’s Cut: A Due-Diligence Framework for Energy Procurement Fees

The cost that rarely appears on the comparison sheet

When a UK business renews an electricity or gas contract, the visible competition tends to be between unit rates and standing charges. The less visible competition is between the commercial arrangements behind those rates. A broker may be paid by the supplier through an embedded commission, by the client through a fixed fee, or through a combination of retainer and success fee. Each model can produce a defensible offer. Each can also produce advice that is shaped by the adviser’s remuneration rather than the buyer’s load profile.

For 2026 renewals, the practical question is not whether brokers should be paid. It is whether the buyer can see how, how much, and on what basis. A procurement strategy that treats broker fees as an afterthought is not fully costed. It is a strategy with an unknown line item.

Three payment models, three different incentives

Commission-inclusive offers are common in the SME and mid-market segments. The supplier quotes a rate that already contains the broker’s margin, and the broker receives payment after the contract is signed. The attraction for buyers is simplicity: no separate invoice, no procurement budget approval for advisory work. The risk is opacity. If the commission is not disclosed in pence per kilowatt-hour or as a percentage of contract value, the buyer cannot tell whether a cheaper gross rate was rejected in favour of a richer net one.

Fixed-fee arrangements reverse the visibility problem. The client pays the broker directly, often in stages, and the supplier offer is presented net of broker remuneration. This can make like-for-like comparison easier and can align the broker with a smaller number of well-tendered contracts rather than a larger number of quick signatures. It also shifts cost onto the buyer’s budget, which may require internal approval and a clear scope of work.

Retainers and shared-savings models sit between the two. A retainer buys ongoing account management, bill validation or market monitoring. A shared-savings fee links remuneration to a measured reduction against a baseline. Both can work, but both need a written definition of the baseline, the measurement method and the circumstances in which a saving is genuinely attributable to the adviser.

Reading an offer for embedded remuneration

A commission-inclusive rate is not automatically poor value. The issue is undisclosed commission, not commission itself. Buyers should ask for the broker’s remuneration to be stated separately, even where the supplier pays it. A written disclosure might show a pence-per-kWh figure, an estimated annual amount based on the buyer’s consumption, and the contract term over which it is earned.

It is also worth testing how the offer changes when the commission assumption changes. If a broker can show a net rate and a gross rate, the buyer can see the cost of advice in plain terms. If the broker cannot or will not provide that split, the buyer should treat the omission as a due-diligence finding rather than a technicality.

Contract length deserves similar scrutiny. Longer terms can carry higher total remuneration and can reduce the buyer’s ability to respond to market movements. A broker who consistently recommends the longest available term without explaining the trade-off may be optimising for certainty of income rather than certainty of supply. That is not necessarily improper, but it is a bias the buyer should identify and price.

A broker scorecard for 2026 renewals

A simple scorecard can turn a vague sense of unease into a structured conversation. The four tests below are deliberately practical. They can be applied to an incumbent broker or to a shortlist of alternatives.

Fee disclosure

Does the broker provide written disclosure of all remuneration, including supplier-paid commission, before the buyer signs? Is the disclosure specific to the recommended contract rather than a generic statement? Can the buyer see both the gross offer and the net-of-remuneration equivalent? A strong answer is a document, not an assurance.

Tender breadth

How many suppliers were approached, and which ones declined? Were all viable suppliers for the buyer’s consumption profile and credit position included? A narrow tender may still be legitimate where the buyer’s profile excludes certain suppliers, but the broker should explain the exclusions. A renewal presented as competitive without evidence of a genuine market test is simply a renewal with better presentation.

Contract length bias

Does the recommendation explain why the proposed term is appropriate for the buyer’s risk appetite, budget cycle and operational flexibility? Are shorter or alternative structures shown, even if only as a comparison? A broker who can articulate the trade-offs is more useful than one who presents a single option as the only sensible route.

Post-signature support

What happens after signature? Are bill validation, meter read reconciliation, renewal diary management and query resolution included, or are they chargeable extras? The cheapest headline fee can become expensive if basic administration is excluded and the buyer has to resource it internally.

Testing whether the advice is genuinely competitive

A scorecard is not a substitute for market testing. Buyers can ask for a tender summary that shows the suppliers approached, the dates of quotes, the contract lengths offered and the basis on which the recommended offer was selected. Where commission is embedded, the summary should state the assumed remuneration. Where a fixed fee applies, the summary should show the fee separately from the supplier cost.

It is also reasonable to ask how the broker handles a scenario in which the buyer wishes to accept a different supplier’s offer. A clear process for transferring the agreement, and for any fee consequences, is a sign of a professional arrangement. Ambiguity at that point tends to surface later as a dispute.

What to put in the mandate

The mandate letter or terms of business is where fee transparency becomes enforceable. It should state the remuneration model, the disclosure obligations, the tender process, the contract length rationale and the post-signature services included. It should also confirm who retains the data and how renewals will be diarised if the buyer decides to move adviser.

For 2026, cost-conscious buyers should treat broker fees as part of the total cost of energy procurement, not as a supplier-side detail. The objective is not to eliminate commission or to insist on fixed fees in every case. It is to ensure that the adviser’s incentive is visible enough to be managed. A broker who welcomes that scrutiny is usually the one worth keeping.