Multi-Year Fixed Business Electricity UK 2026: 3-5 Year Deals

By Andy Pickett · Managing Director

Published 27 April 2026 · About the author

Most UK business electricity contracts are 12 or 24 months. But for businesses that hate market volatility — care homes, schools, manufacturers, multi-site retail, anyone with cost-plus public-sector contracts — a 3, 4 or 5 year fix has real value. It buys budget certainty, removes annual renewal admin, and on a flat or rising wholesale curve can lock in below where year-3 rates land. This guide covers what’s available in 2026, who offers it, the trade-offs, and how to pick the right length. For the broader contract picture, see our business energy tariffs explained guide.

What is a multi-year fixed business electricity contract?

A multi-year fixed contract is a single agreement covering 36, 48 or 60 months at a unit rate and standing charge that do not change for the life of the contract. The supplier hedges your forecast volume on the wholesale market for the full term, then sells it to you at a fixed pence-per-kWh.

What’s included in the fixed price:

• The wholesale commodity component (40-55% of unit rate).
• The supplier’s margin and cost-to-serve.
• The broker’s commission, if used.
• Some non-commodity components, depending on contract design (often the more recent / volatile elements).

What’s not always included — read the small print:

• Climate Change Levy (CCL) is usually a separate line on the bill at the prevailing statutory rate.
• VAT changes pass through automatically.
• Some “fixed” contracts have a “force majeure” or “change in law” pass-through clause that lets the supplier raise rates if specific named non-commodity charges (BSUoS, AAHEDC, Capacity Market) jump materially. This is the headline term to interrogate.

3 vs 4 vs 5 year fix: trade-offs

Indicative SME rates Q1 2026 for clean-credit businesses on a 50,000 kWh annual profile. Larger commercial users get sharper pricing; smaller micro-businesses pay 2-4p/kWh more per term.

Suppliers offering multi-year fixes in 2026

Not every UK business energy supplier offers 4 and 5 year terms. The market splits roughly:

• 3-year fixes (widely available): nearly all major suppliers — British Gas Business, EDF, ScottishPower, E.ON Next Business, SSE Business, Total Energies, SEFE Energy, Drax, Opus Energy, Crown Gas & Power, Pozitive Energy, Smartest Energy.
• 4-year fixes (selectively offered): British Gas Business, EDF, ScottishPower, Total Energies, SEFE Energy, Drax, Opus Energy, Crown Gas & Power. Smartest Energy on volumes above 100k kWh.
• 5-year fixes (limited): typically only the larger suppliers — British Gas Business, EDF, ScottishPower, Total Energies, SEFE Energy, Drax (and only above ~75k kWh). Some SME-tier suppliers will quote 5-year for very strong credit profiles only.

For the supplier-by-supplier breakdown of strengths, weaknesses and credit ratings, see our UK business energy suppliers guide and Big Six business energy comparison.

Pricing dynamics: when does a long fix win?

A multi-year fix is fundamentally an insurance contract. You pay a small premium today against the risk of wholesale prices rising in years 3-5. Whether that premium is worth paying depends on the shape of the forward curve at the time you sign.

When a 4-5 year fix wins

• Forward curve is rising (contango): later years priced higher than near-term. A long fix locks today’s lower price into later years.
• Geopolitical or regulatory uncertainty is high (e.g. early 2022 post-Ukraine).
• You have a long lease, fixed-price customer contract or long-dated grant funding to defend.
• You score “C” or “D” on commercial credit and want to avoid being repriced upwards in year 2 if a soft renewal lands on a poor wholesale day.

When a 12-24 month fix wins

• Forward curve is falling (backwardation): later years priced lower than near-term. Short fix lets you re-quote at the lower price.
• Wholesale just spiked — signing long would lock in the spike.
• You have flexibility to revisit procurement frequently (in-house energy manager).

Where 2026 sits

The current wholesale curve is roughly flat to mid-2027 and gently rising 6-9% into 2028-29 driven by Hinkley Point C delays, North Sea gas tail-off and tightening Capacity Market auctions. The implication: 3-year fixes win on blended cost for most SMEs, but 4-year fixes start to look attractive if you need to span the 2028 step-up and budget-certainty matters. 5-year fixes only win for businesses where price certainty itself is the deliverable (e.g. social-housing-funded care homes, public-sector tender holders). For the underlying wholesale story, see UK wholesale gas and electricity prices explained.

Exit fees and early termination

Multi-year fixes carry early-termination fees (ETFs) that are larger than 12-month fixes. The market norm in 2026:

• 1-3 months’ contract value: most major suppliers, calculated as remaining unit rate × forecast usage in the next 30/60/90 days, capped.
• Mark-to-market: some larger commercial contracts charge the difference between your fixed rate and the day’s wholesale price for the remaining term — can be enormous if wholesale falls.
• “Take or pay” clauses: rare for SMEs, common above 1m kWh. You agree to pay for a minimum volume regardless of consumption.

Pre-empt this by:

1. Asking for the ETF formula in writing before signing.
2. Negotiating a cap (3 months’ contract value is reasonable; mark-to-market is not for SMEs).
3. Confirming whether site closure / business sale / change of tenancy triggers ETF or a no-fee novation. See our change of tenancy guide.

Creditworthiness gating

Multi-year fixes are credit decisions for the supplier. They are pre-buying 3-5 years of wholesale on your behalf and need confidence you’ll pay. Suppliers therefore:

• Run a Dun & Bradstreet, Experian or Creditsafe check before quoting.
• Refuse 5-year terms below a credit threshold (typically D&B Failure Score under 50 or Creditsafe under 30 means no 60-month, possibly no 48-month).
• May require a security deposit (1-3 months’ bill) for weak-credit customers signing long terms.
• Sometimes require a personal director’s guarantee for SMEs with limited trading history.

Improving your credit profile before a multi-year tender (file accounts on time, pay HMRC promptly, file a CR01 to add directors if missing) opens up better pricing. See our credit score and business energy prices guide.

Worked example: 4-year fix saving £14,000

A 90-bed care home in the Midlands using 180,000 kWh/year, currently on a deemed rate of 31.5p/kWh + £2.20/day standing.

Assumes 4-5% annual non-commodity inflation in the deemed scenario, 2-3% in the 12-mo re-quote scenario. Standing charge held at £1.10/day in fixed scenarios. Excludes VAT/CCL.

Even though the 48-month fix has a higher unit rate than the 36-month, total 4-year cost is fractionally lower because it locks year 4 (where wholesale is implied to step up). Compared with staying on the deemed rate, the 48-month fix saves £75,900 over four years — £19,000/year on a 180,000 kWh care home. Compared with re-quoting yearly, the saving is a smaller £14,000 but with zero renewal admin and full budget certainty.

Volume tolerance: what if my consumption changes?

Multi-year fixes are forecast on your last 12 months of consumption. If your actual usage rises or falls, the contract has a tolerance band:

• Standard SME tolerance: typically ±25% per year.
• Beyond the tolerance band: the supplier can apply an “out of tolerance” charge, repricing the excess at near-spot rates.
• Major commercial: tolerance bands of ±10-15% with explicit “swing fees” for breach.

If your business is rapidly growing (or shrinking), a 24-month fix or a flexible / pass-through contract may be safer than a 4-5 year fix. See business energy procurement for flexible contract options at scale.

Multi-year fix checklist before signing

1. Confirm the contract term, start date and end date in writing.
2. Note all pass-through clauses (BSUoS, Capacity Market, change-in-law).
3. Get the early-termination fee formula in writing with a cap.
4. Confirm broker uplift in p/kWh, not %, with a copy of any commission disclosure.
5. Confirm REGO / green credentials if you need them.
6. Validate the volume tolerance band and out-of-tolerance pricing.
7. Validate that change-of-tenancy triggers a no-fee novation, not a termination event.
8. Lock in the agreed rates by countersigning within the supplier’s quote validity (often 7 days).

Ready to compare multi-year deals? Run a free 60-second business energy comparison across every UK supplier, or call 0333 015 2615 to speak to a UK-based energy advisor.

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