Standing Charge Increase on Renewals

A renewal letter landed on a desk in Loughborough last week. Electricity standing charge on the new fixed price: 640 pence per day. The standing charge on the contract it was replacing: 64 pence per day.

That is not a typo. That is a tenfold increase on the fixed daily cost of being connected to the grid — quoted in writing, on supplier letterhead, signed by the Head of Sales.

And the unit rates? Almost identical. In some cases the new unit rate is lower than the old one.

The next renewal cycle is going to surface a category of cost most UK businesses don’t realise they’re paying — and the supplier comparison tools are not going to flag it for you.

What’s actually moving on the bill right now

The standing charge is the daily fixed fee you pay for being connected to the energy grid, regardless of whether you use a single kWh. It covers your share of the transmission and distribution networks, the cost of running the meter, settlement and data flow, and an allocation of the supplier’s customer-service overhead.

Until 2022, it was a footnote. A typical UK SME paid roughly 38p per day in 2021. By 2026 that average sits around 60–70p per day on standard connections — and on the renewal letters now landing for Q2 2026, the numbers I’m seeing are dramatically higher than that.

The pattern is consistent across the major suppliers:

Headline unit rate: flat or slightly down on renewal
Standing charge: up 4×, 5×, occasionally 10× on the previous contract
Estimated annual cost (which the supplier doesn’t show you): materially higher

For a business with a low consumption profile, the fixed daily cost can now exceed the variable cost. The supplier has converted what used to be a usage-based bill into something that looks closer to a subscription.

Why this is happening, and why it accelerates from April 2026

Three things are converging at once.

Network charges are being recovered through the fixed line, not the variable. From 1 April 2026, the demand-residual element of TNUoS — the charge that funds the national transmission grid — rose by approximately 94% year-on-year. This is a per-meter, per-day cost. It does not move with consumption. It lands directly in the standing charge, regardless of how efficient your business has become.

Policy and supplier-failure costs were quietly relocated. When two dozen smaller suppliers collapsed in 2021–22, the cost of taking on their stranded customers — Supplier of Last Resort costs, in the regulator’s language — was recovered through standing charges rather than unit rates. Those costs were never reversed when wholesale prices stabilised. They were absorbed into the new normal.

Business contracts have no price cap. None. Ofgem’s price cap protects domestic customers. It does not exist for commercial supply. There is no regulatory ceiling on what a supplier can quote a UK business for a daily standing charge. Whatever the renewal letter says, that is the legal price you have been offered.

Why the supplier loads the increase onto the standing charge specifically

This is the part that doesn’t get explained, and it’s the part that matters.

Comparison tools rank by unit rate. Almost every business energy comparison site — and almost every internal procurement framework inside an SME — sorts suppliers by p/kWh. A supplier with a competitive headline unit rate appears at the top of the list. The standing charge is shown in a smaller column, often below the fold, and rarely loaded into the headline cost calculation correctly.

Standing charge revenue is locked in. A unit rate is contingent — if your business uses less, the supplier earns less. A standing charge is the same whether you run three shifts or shut for August. From the supplier’s P&L, standing charge revenue is the cleanest, most forecastable line on the book. Of course they want more of their margin coming from there.

Renewal customers don’t shop the standing charge. SMEs renewing with their incumbent are pattern-matchers. They check whether the unit rate looks reasonable, decide it does, and sign. The standing charge is the line nobody scrutinises — which is exactly why it’s the line every supplier is now testing.

Out-of-contract and deemed rates are even worse. A business that misses its renewal window and rolls onto variable can see standing charges of £8–£20 per day on a half-hourly meter. For a closed branch or a vacant retail unit, the bill keeps running on a meter that consumed nothing.

The brutal irony? The businesses most exposed are the ones with low consumption profiles — small offices, vacant units, seasonal operations, sites between tenants. The ones least able to absorb a fixed cost increase are the ones being asked to absorb the largest one.

The five-minute renewal check every business should run before signing

Compare standing charges side-by-side, not just unit rates. Take your current contract’s standing charge, multiply by 365, and compare against the new offer’s annual standing charge total. The difference is the part the supplier doesn’t want you to look at.
Calculate full annual cost, not p/kWh. (Standing charge × 365) + (estimated annual consumption × unit rate). Anything else is comparing apples to a slightly differently shaped apple.
Check the meter type. Three-rate, half-hourly, and capacity-charged meters all carry standing charges of different magnitudes. A supplier quoting “competitive” unit rates on a meter type they handle badly is not a saving.
Look for TNUoS pass-through clauses. A “fixed” contract may still pass through the TNUoS standing charge increase mid-term. Read the contract pack, not the cover letter.
Get a comparison from an independent consultancy. Not a supplier-aligned comparison site. Not an automated quote tool. Someone whose fee arrangement is not contingent on you signing a particular supplier’s contract.

The bigger question: what happens when fixed cost overtakes variable cost

For a century, the energy industry sold a commodity. Units in, units out, units billed. The economic logic of efficiency was simple: use less, pay less.

That logic is breaking down.

When 60% of a small business’s energy bill is fixed daily charges that cannot be reduced by behaviour, efficiency, or operational change, the entire commercial proposition of the supplier shifts. They are no longer selling you electricity. They are selling you a subscription to grid access, with electricity bundled in.

That is a profound change to how UK businesses should think about energy. It changes the economics of solar — the unit rate you offset is the smaller part of the bill; the standing charge is unaffected. It changes the economics of energy efficiency upgrades — LED retrofits and smart controls reduce a shrinking proportion of total cost. It changes the case for on-site generation, which can offset units but not standing charges, versus disconnection altogether, which is what some businesses with vacant sites are quietly starting to do.

And it raises a regulatory question that nobody in Westminster is asking: if commercial energy supply is increasingly a fixed-cost subscription, why is it the only utility-like service in the UK with no price cap, no comparison standard, and no obligation on the supplier to flag a material change to the structure of the bill?

The answer is that nobody has asked. The supplier P&L works very well as it is. The regulator’s mandate is domestic protection. The trade body represents the suppliers. The comparison sites monetise the unit rate. Every party in the system has an incentive to keep the standing charge as the part nobody talks about.

What this means for a business renewing in 2026

Your unit rate is going to look reasonable. The supplier has been disciplined enough to keep that line competitive. The thing they are testing — the line they are quietly inflating because the comparison infrastructure doesn’t surface it — is the standing charge.

If you have a renewal between now and the end of 2026, the question is no longer “what’s your p/kWh?” The question is: what is the total annual cost of this contract, including standing charges, capacity charges, and any pass-through clauses that activate after April 2026?

If the supplier can’t answer that in writing, they are not offering you a contract. They are offering you a position you can’t model.

The energy industry has spent four years moving cost from the variable line to the fixed line.

The next renewal cycle is when most UK businesses find out.

The supplier is hoping you don’t check.

📱 WhatsApp: 07360 272168 | 📧 hello@telnergy.com | 📞 01202 028888 Telnergy Limited · Independent commercial energy consultancy since 2002 · Ofgem registered TPI · ADR Ref E3561 · CRN 04576876 · Christchurch, Dorset

FAQ

How do I find the standing charge on my current energy contract?

It should be on your pricing schedule — not the cover letter, the actual schedule of charges. Look for a line expressed in pence per day or pounds per day, sometimes labelled as “daily supply charge”, “meter standing charge”, or “fixed daily charge”. If your bill doesn’t show it clearly, request a full breakdown of charges from your supplier in writing. On a pass-through contract it may be split across multiple line items — distribution use-of-system standing charge, transmission standing charge, and metering charge are all components of what collectively constitutes your fixed daily cost.

Can I negotiate the standing charge at renewal, or is it fixed by the network?

It depends on the component. The network portion — distribution and transmission standing charges — is set by the regulator and passed through; no supplier can alter it. But the supplier’s own margin, metering costs, and balancing elements that sit within the standing charge are negotiable, just as unit rate margin is. A supplier quoting a standing charge significantly above the regulated network cost is embedding margin in that line. Whether they’ll move on it depends on your consumption volume, contract length, and whether they believe you’ll walk. The leverage is the same as on the unit rate: a genuine competitive tender, not a conversation with the incumbent.

What is a reasonable business energy standing charge in 2026?

There is no single benchmark because it varies by meter type, distribution zone, voltage level, and agreed supply capacity. A standard single-phase SME meter on Profile Class 3 or 4 in 2026 would typically see a standing charge in the range of 60–110 pence per day on a competitive fixed contract, with network cost increases from April 2026 pushing the lower bound of that range upward. Half-hourly metered sites carry higher standing charges because the data flow, settlement, and capacity components are more substantial. If a renewal quote shows a standing charge significantly above these indicative ranges, you are looking at either a non-standard meter arrangement — which should be explained — or supplier margin embedded in the fixed line, which should be tested against the market before signing.

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