Switch to a 12 month fixed energy tariff in the UK
Compare whole-of-market fixed deals and see whether a 12 month fixed tariff could suit your home. Get results in minutes and switch with confidence.
- Whole-of-market comparison for UK households
- See estimated monthly cost and annual projection
- Switch online with minimal hassle (no engineer visit for most)
- Choose fixed deals with clear terms and exit fee visibility
For domestic energy customers in Great Britain. Savings depend on your current tariff, usage and available rates. Always check tariff terms, including any exit fees.
Compare 12 month fixed energy tariffs (UK homes)
A 12 month fixed energy tariff keeps your unit rates and standing charges set for the duration of the contract (typically 12 months). That can make budgeting easier compared with variable rates. With EnergyPlus, you can compare fixed deals across the market and choose the one that fits your household.
Tip: To compare accurately, have a recent bill handy. If you don’t know your annual kWh usage, we can still provide estimates based on your property and occupancy.
What you’ll need (takes ~2 minutes)
- Your postcode (to show your local network rates)
- Whether you want gas & electricity or electricity-only
- How you pay now (Direct Debit, on receipt of bill, prepayment)
- Optional: your annual usage (kWh) for the most precise results
Get your 12 month fixed quotes
Fill in the form and we’ll match you with available fixed tariffs for your home.
Why choose a 12 month fixed tariff?
More predictable bills
Your unit rates and standing charges stay the same for the term, helping you plan monthly spending.
Protection from price rises
If prices increase during the year, your fixed rates won’t go up until the contract ends (subject to terms).
Clearer comparison
Fixed deals can be easier to compare like-for-like because the rates are set, so projections are more stable.
Choice across suppliers
We show available tariffs from multiple UK suppliers so you can choose price, service and features.
Options for greener electricity
If you’re looking for renewable-backed electricity tariffs, you can filter and compare available plans.
Switching is usually simple
Your energy supply stays on. In most cases there’s no disruption and no engineer visit required.
Good to know: Fixed tariffs can include an exit fee if you leave early. If you want maximum flexibility, you may prefer a variable tariff. See costs & exit fees.
How switching to a 12 month fixed tariff works
Switching energy supplier (or switching tariff with your current supplier) is a regulated process. If you choose a 12 month fixed deal, your prices are set for the contract term and you’ll typically pay by Direct Debit. Here’s what to expect.
- Tell us your postcode and preferences. We’ll show available fixed tariffs for your area and payment type.
- Compare prices and terms. Check unit rates, standing charges, contract length, and any exit fees.
- Submit your switch. We pass your details securely to the chosen supplier to set up your new tariff.
- Keep using energy as normal. Your supply doesn’t stop—only the billing changes behind the scenes.
- Provide meter readings if needed. Readings help close your old account and start your new one accurately (smart meters often send readings automatically).
Will my energy go off?
No. Your gas and electricity keep flowing. Switching changes who bills you, not the physical supply.
How long does it take?
Timelines vary, but many switches complete in a few working days. The supplier will confirm dates and next steps.
Can I switch with a smart meter?
Usually yes. Your smart meter should continue to work, though in some cases smart functions may vary by supplier.
Costs, unit rates and exit fees: what to check on a fixed deal
When you compare 12 month fixed tariffs, focus on the parts of the tariff that drive your bill. Prices are usually made up of a standing charge (daily) and a unit rate (per kWh). Some fixed deals also include an exit fee if you leave early.
| Tariff feature | What it means | Why it matters for a 12 month fix |
|---|---|---|
| Unit rate (p/kWh) | Price per unit of gas/electricity you use. | This is the main driver of costs if you use a lot of energy (larger homes, electric heating). |
| Standing charge (p/day) | Daily charge for keeping you connected. | High standing charges can make a tariff less suitable for low-usage households. |
| Exit fee | A fee charged if you leave before the end date. | Important if you might move home or want flexibility to switch again if prices drop. |
| Payment method | Direct Debit, on receipt of bill, or prepayment. | Some of the best fixed deals are Direct Debit only; we’ll show what’s available for you. |
| Tariff end date | When the fixed period ends. | Set a reminder to review your tariff before it ends to avoid rolling onto a higher default rate. |
Moving home? Some suppliers let you take your fixed tariff with you; others may apply an exit fee if you end the contract. Always check the supplier’s moving-home policy before you switch.
Who can switch to a 12 month fixed tariff?
Most households can switch, but availability depends on your meter type, payment method and whether you’re currently in a fixed contract. If you’re not sure, submit the form above and we’ll guide you.
You can usually switch if:
- You’re responsible for the home energy bills
- You have a standard credit meter or smart meter
- You can provide (or estimate) typical usage
- You want a domestic gas/electricity tariff in Great Britain
Check before you switch if:
- You’re in the middle of a fixed-term deal (exit fees may apply)
- You use prepayment (fewer fixed options in some areas)
- Your property has restricted meter arrangements
- You’re moving home soon and want to avoid early exit charges
Looking for flexibility instead? You may want to compare how fixed tariffs work and decide whether a fixed or variable plan best matches your priorities.
Common mistakes when choosing a 12 month fixed tariff
Avoid these pitfalls to get a fixed deal that genuinely suits your household.
Only comparing monthly Direct Debit
A low monthly amount can be based on estimated usage. Check the rates and your kWh assumptions.
Ignoring standing charges
If your usage is low, a higher standing charge can outweigh a slightly cheaper unit rate.
Forgetting the end date
When a fix ends, you may move onto a more expensive default tariff—set a reminder to review.
Overlooking exit fees
If you think you’ll want to switch again within the year, an exit fee may change the value.
Not checking payment types
Some tariffs require Direct Debit. If you need a different payment method, filter accordingly.
Missing dual-fuel comparisons
Combining gas and electricity with one supplier can be convenient, but it’s not always the cheapest.
FAQs: 12 month fixed energy tariffs
Is a 12 month fixed tariff right for me?
It can be a good fit if you want stable prices for the year and prefer predictable budgeting. If you value flexibility or expect to move soon, a variable tariff or a fix with low/no exit fees may be better.
Can I switch before my current fixed tariff ends?
Yes, but your current supplier may charge an exit fee. It’s worth comparing the potential saving against any fees so you can decide if switching early is worthwhile.
Will I need a smart meter to get a fixed deal?
No. Many fixed tariffs are available with standard meters too. A smart meter may make readings easier, but it’s not required for most tariffs.
Are 12 month fixed tariffs cheaper than variable?
Not always. Fixed tariffs can be cheaper or more expensive depending on the market. The value is often in certainty. Comparing whole-of-market options is the quickest way to see what’s currently available for your postcode.
What happens when my 12 month fix ends?
Your supplier will normally move you onto a standard variable tariff unless you choose a new deal. Review your options before the end date so you can switch (or refix) without overpaying.
Do I need to contact my current supplier?
Usually no. Your new supplier will manage the switch, and your existing supplier will send a final bill once the transfer is complete.
Still unsure? Start with the comparison form and we’ll help you understand the best 12 month fixed options available for your home.
What customers look for when switching
We focus on clear, practical comparisons so you can choose with confidence.
“I wanted a simple 12-month fix and needed the exit fee clearly explained. The comparison made it easy.”
Homeowner, West Midlands
“The standing charge differences surprised me. Seeing the full breakdown helped me choose the right fixed deal.”
Tenant, Greater Manchester
“I switched without any disruption. The steps were clear and I knew what to expect from start to finish.”
Household, Kent
Whole-of-market approach
Compare available tariffs across multiple suppliers, not just a limited panel.
Clear terms
We highlight the details people care about: rates, standing charge, term length and exit fees.
Support when you need it
If anything is unclear, we can help you understand your options before you switch.
Ready to lock in a 12 month fixed deal?
Compare whole-of-market UK tariffs and switch to a fixed rate that matches your household’s needs. It takes just a few minutes to get started.
Prefer to read first? Jump to costs & exit fees or FAQs.
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