Cheapest two year fixed energy deal in the UK (what “cheapest” really means)
Two-year fixes can protect you from price rises, but the lowest headline rate isn’t always the lowest bill. Use this guide to compare like-for-like and get a whole-of-market quote based on your home, meter and payment type.
- See how to identify the true cheapest 2-year fix for your postcode and meter
- Check exit fees, unit rates, standing charges and eligibility before you commit
- Get an estimated quote in minutes (no obligation)
Prices are estimated and vary by region, payment method, meter type and supplier terms. Always check the tariff information label before switching.
Fast answer: the “cheapest” 2‑year fix is the lowest total estimated annual cost for your postcode and meter
In the UK, energy prices vary by region (your network area), payment method (Direct Debit vs cash/cheque/prepay), meter type (single-rate, Economy 7, smart, prepay) and the supplier’s tariff structure. So there isn’t one universal cheapest two-year fixed deal “right now” that fits everyone.
What to compare first
- Estimated annual cost (using your kWh)
- Electricity & gas unit rates (p/kWh)
- Standing charges (p/day)
Key checks for a 2‑year fix
- Exit fees (gas and electricity can be separate)
- Any end dates / renewal terms
- Eligibility (smart meter, credit checks, online-only)
When a 2‑year fix may not be cheapest
- If prices fall and exit fees are high
- If your standing charge is high for low use
- If you’ll move home soon
Editor’s note: “Cheapest” can mean (1) cheapest unit rate, (2) cheapest standing charge, or (3) cheapest total bill. For most households, (3) is the one that matters. This page focuses on total estimated cost.
Find the cheapest 2‑year fixed deal for your home
We’ll show available two-year fixed tariffs you may be eligible for, then rank them by estimated annual cost. If you have a recent bill, you’ll get a more accurate estimate.
To get the most accurate “cheapest” result:
- Use the bill payer’s details (or the named account holder)
- Enter the postcode for the supply address (not your mailing address)
- If you’re on Economy 7 or prepay, mention it when you speak to us after submitting
What happens after you submit
- We match your postcode to your regional price area and show eligible two-year fixes.
- We sort by estimated annual cost and highlight key terms (standing charge, exit fees).
- You choose whether to proceed. Switching typically completes in around 5 working days for most homes (timings can vary).
Get your quote (no obligation)
How to choose the cheapest two‑year fixed energy deal (UK)
A two-year fix can be “cheapest” on paper but still cost more for your household if the standing charge is high or if you use electricity mostly at night (Economy 7). Here’s a practical way to compare.
Step 1: Compare using your kWh (not just £/month)
Monthly Direct Debit is often set to smooth payments across the year. Two tariffs with the same £/month can still differ once a supplier recalculates based on readings. Use annual consumption in kWh from your bill where possible.
Step 2: Check standing charges (especially for low use)
Standing charges vary by region and can dominate the bill for small flats and single occupants. A slightly higher unit rate can be cheaper overall if the standing charge is lower.
Step 3: Confirm your meter type and tariff suitability
- Single rate: one electricity unit rate all day
- Economy 7: day and night rates (best if you use a large share overnight)
- Prepayment: prices and eligibility can differ; some fixes exclude prepay meters
Step 4: Read the key terms: exit fees, price change clauses, billing
Most fixed tariffs include exit fees. Check whether they apply per fuel and whether they reduce near the end of the term. Also confirm billing and payment requirements (e.g., online-only or Direct Debit only).
Two realistic scenarios (with numbers)
These examples show why the cheapest unit rate isn’t always the cheapest bill. Figures are illustrative and exclude any discounts/cashback; your actual prices depend on your region and tariff.
Scenario A: Low-use flat, single rate electricity
- Assumed use: 1,800 kWh electricity/year, no gas
- Tariff 1: 22p/kWh + 70p/day standing
- Tariff 2: 24p/kWh + 50p/day standing
Estimated annual cost: Tariff 1 = (1,800×£0.22) + (365×£0.70) ≈ £651. Tariff 2 = (1,800×£0.24) + (365×£0.50) ≈ £615. Cheaper overall: Tariff 2 (despite the higher unit rate).
Scenario B: Family home, dual fuel, higher use
- Assumed use: 3,100 kWh electricity/year and 12,000 kWh gas/year
- Deal A: electricity 25p/kWh + 60p/day; gas 6.5p/kWh + 33p/day
- Deal B: electricity 27p/kWh + 50p/day; gas 6.2p/kWh + 40p/day
Estimated annual cost: Deal A ≈ £1,634. Deal B ≈ £1,656. Cheaper overall: Deal A (lower combined standing charges outweighed the slightly higher gas unit rate in Deal B).
Quick comparison: what you should look at (before picking “cheapest”)
| Check | Why it affects the cheapest deal | Best for | Watch out for |
|---|---|---|---|
| Estimated annual cost | Combines unit rates + standing charges using your kWh. | Most households | If your kWh estimate is off, ranking can change. |
| Standing charge | You pay it every day regardless of use. | Low-use homes | Higher standing charge can erase “cheap” unit rates. |
| Meter type | Economy 7 and prepay are priced differently. | E7 users / prepay customers | A single-rate tariff may be worse for heavy overnight use. |
| Exit fees | Leaving early can cost ££ and stop you switching when prices fall. | Those who value certainty | Fees can apply per fuel and per account. |
| Payment method | Direct Debit often has cheaper pricing than standard credit. | Most switchers | If you can’t pay by DD, you may see fewer “cheap” fixes. |
Decision checklist: who a 2‑year fixed deal suits (and who it doesn’t)
Often suits you if:
- You want predictable rates for budgeting
- You expect to stay in the property for 2 years
- You’d rather avoid tracking market changes
May not suit you if:
- You might move or change tenancy soon
- You want flexibility to switch quickly
- The tariff has high exit fees
Moving home? Many suppliers will let you transfer a fixed tariff to a new address, but it’s not guaranteed (and depends on meter compatibility and supplier coverage). Always ask before committing.
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Costs, exclusions and common pitfalls (so “cheapest” stays cheapest)
Two-year fixed tariffs can be good value, but small details can change the outcome. These are the most common issues UK households run into when searching for the cheapest deal.
Exit fees
Fixed deals often charge an early termination fee. It may apply per fuel and could reduce near the end of the term (or not). Check before switching.
Direct Debit assumptions
Many “cheap” tariffs are priced for monthly Direct Debit. If you pay on receipt of bill, standard credit rates can be higher and fewer deals may appear.
Economy 7 mismatch
If you have Economy 7 but switch to a single-rate tariff (or vice versa), your costs can rise. Confirm your meter setup and usage split.
Standing charge shock
A low unit rate can hide a high standing charge. This matters most for low users and electric-only flats.
Eligibility limits
Some tariffs are online-only, require paperless billing, or exclude certain meter types (including some prepay setups).
“Fixed” doesn’t fix everything
A fixed tariff typically fixes unit rates and standing charges, but other elements (like VAT rules or government interventions) may change. Always read the terms.
Before you switch: 60‑second sanity check
- Do the prices shown match your payment method (Direct Debit vs standard credit vs prepay)?
- Are you comparing the right meter type (single-rate vs Economy 7)?
- Have you checked the exit fees on your current tariff?
- Is the tariff dual fuel or single fuel (and is that what you want)?
FAQs about the cheapest two‑year fixed energy deals (UK)
Is there one cheapest two-year fixed deal in the UK right now?
Not reliably. Energy prices vary by region, meter type and payment method, and tariffs can change or be withdrawn. The practical way is to find the cheapest for your postcode and your consumption.
What counts as “two-year fixed”?
A tariff with a fixed term of around 24 months where the unit rates and standing charges are fixed for the term (subject to the supplier’s terms). Always check the tariff end date and exit fee details.
Can I switch if I’m in a fixed deal already?
Usually yes, but you may pay exit fees. Some suppliers waive exit fees in a set window near the end of the tariff. Check your current tariff information or ask your supplier before switching.
How long does an energy switch take in the UK?
For most households, switching completes in around 5 working days, though it can take longer in some cases (for example, complex meter setups, data mismatches, or where additional checks are needed). Your supply won’t be interrupted during a switch.
Will a two-year fix be cheaper than the Ofgem price cap?
It depends. The Ofgem price cap applies to default tariffs (like standard variable), not to fixed deals. A fixed deal can be above or below the cap-equivalent level depending on market conditions and tariff structure. Compare using estimated annual cost for your usage.
Does my postcode really change the price?
Yes. Standing charges and unit rates vary across Great Britain because of regional network costs and tariff structures. Northern Ireland has a separate market; availability and switching processes differ there.
Can tenants switch to a two-year fixed tariff?
Often, yes—if you pay the energy bills and your tenancy allows you to choose the supplier. If bills are included in rent or the landlord controls the supply, you may not be able to switch. If you might move soon, consider exit fees carefully.
Do I need a smart meter to get the cheapest two-year fix?
Not always. Some tariffs are available with traditional meters, while others may require a smart meter (or offer extra features if you have one). If you have Economy 7 or a prepay setup, meter type matters more for eligibility and pricing.
What information should I have ready to compare accurately?
Your postcode, whether you have gas and electricity, your payment method, and ideally your annual usage in kWh (from a recent bill). If you don’t have usage, we can estimate it—but results may be less precise.
Trust, methodology and sources
Page accountability
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess “cheapest” on this page
Because tariffs vary by customer circumstances, we don’t name a single “cheapest” supplier for everyone. Instead, we explain how to find the cheapest option for your situation and what changes the result.
- Primary metric: lowest estimated annual cost (unit rates + standing charges) for your usage.
- Inputs that change outcomes: postcode (region), meter type (single-rate/Economy 7/prepay), payment method, dual fuel vs single fuel.
- What we don’t do: we don’t assume a tariff is available to all customers; eligibility and credit checks can apply.
- Limitations: tariff availability can change daily; supplier estimates can differ; your Direct Debit can be adjusted after meter readings.
Important: Always read the tariff information label / key facts before you agree. If anything looks unclear (e.g., exit fees or end dates), ask for confirmation in writing.
Ready to check today’s cheapest two‑year fix for your postcode?
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