Energy tariffs with price guarantee discount in the UK
Compare whole-of-market home energy deals that include a price guarantee discount (where available) and switch with confidence. Tell us a few details and we’ll match you to tariffs that fit how you use gas and electricity.
- Whole-of-market comparison for UK homes (not business)
- See fixed, variable and tracker-style options side by side
- Understand price guarantees, discounts and exit fees before you switch
- Switch online in minutes — we’ll guide you through the details
Price guarantees and discounts vary by supplier and tariff. We’ll show key terms (unit rates, standing charges, duration, fees) before you submit your switch.
Find a UK energy tariff with a price guarantee discount
If you’re looking for extra certainty, a price guarantee can help protect you from unexpected increases for a set period. Some suppliers market this as a price guarantee discount or a guaranteed saving versus their standard variable tariff (SVT) for the duration of your deal.
EnergyPlus compares whole-of-market home energy tariffs (where available) so you can review unit rates, standing charges and key terms in one place. You can switch whether you pay by Direct Debit, prepayment, or on receipt of bill (subject to supplier availability).
Tip: “Guaranteed discount” language can vary. The most important thing to compare is the actual unit rate (p/kWh), standing charge (p/day), tariff length, and any exit fees.
Why choose a price guarantee discount tariff?
Budget certainty
A price guarantee typically means the unit rates and standing charges are set for the term, making it easier to plan household costs.
Potential savings vs SVT
Some deals guarantee a discount compared with a supplier’s standard variable tariff for a set time — helpful if you expect prices to rise.
Clearer comparisons
Fixed terms often come with transparent start/end dates. We highlight key terms so you can compare like for like.
Protection from mid-contract increases
With a fixed tariff, you’re usually protected from price rises during the contract (subject to tariff terms and regulatory changes).
Options for different households
From low-usage flats to family homes, you can compare tariffs based on how you use energy — not just headline discounts.
Switching support
We guide you through the details that matter: meter type, payment method, contract length and any exit fees.
How a price guarantee discount works (UK homes)
Suppliers use different wording, so it helps to know what you’re actually getting. A “price guarantee discount” can mean one of the following:
1) Fixed unit rates for a set term
Your p/kWh and p/day stay the same for 12–24 months (typical). This is the most common type of “price guarantee”.
2) Guaranteed discount vs a supplier’s SVT
The tariff promises to stay a certain amount cheaper than that supplier’s standard variable tariff for the duration (still check your actual rates).
Important: A “discount” isn’t always the cheapest overall. A lower unit rate can be offset by a higher standing charge (or vice versa). Always compare the full tariff costs for your usage.
Switching steps
- Share your postcode (and ideally your current supplier/tariff if you know it).
- Compare like-for-like: unit rates, standing charges, contract length, payment method and any fees.
- Choose your tariff — fixed, variable or tracker — based on your risk comfort and budget goals.
- Switch and keep an eye on your first bill to ensure readings and Direct Debit are set correctly.
What to check before choosing a guaranteed price tariff
To avoid surprises, review these details on any tariff that mentions a price guarantee or guaranteed discount.
| Item | Why it matters | What to look for |
|---|---|---|
| Unit rate (p/kWh) | Biggest driver of cost for higher-usage households. | Compare gas and electricity rates separately and check if rates differ by meter type. |
| Standing charge (p/day) | Can outweigh low unit rates for low-usage homes. | Check the daily charge and any regional variation. |
| Tariff length | Affects how long your price is locked in. | 12, 18 or 24 months are common; note the end date and what you’ll move to after. |
| Exit fees | May apply if you switch away early. | Understand the fee per fuel and any no-fee window near the end of term. |
| Payment method | Some tariffs are only for Direct Debit. | Confirm Direct Debit, prepayment or receipt-of-bill eligibility. |
| Meter type | Impacts which tariffs are available. | Smart, traditional credit, Economy 7/other multi-rate, or prepayment. |
Regional considerations
Standing charges and unit rates can vary by region and network costs. That’s why we ask for your postcode — it helps show the rates that apply where you live.
Low usage vs high usage
If you use less energy, a high standing charge can make a “discounted” tariff look cheaper than it is. If you use more, unit rate tends to matter more.
FAQs: price guarantee discounts on energy tariffs
Is a price guarantee discount the same as a fixed tariff?
Often, yes — but not always. Some suppliers mean your rates are fixed; others mean you’ll stay a set amount below their SVT. Always read the tariff summary and compare the actual rates.
Can my supplier increase prices during a “guarantee”?
With a fixed tariff, unit rates and standing charges are typically locked for the term. However, always check the terms for exceptional changes and what happens at the end of the fixed period.
Will I pay exit fees if I switch early?
Some price-guaranteed tariffs include exit fees (often per fuel). We recommend checking fees before switching, especially if you might move home or want flexibility.
Do I need a smart meter?
Not necessarily. Many tariffs work with standard credit meters, Economy 7, and smart meters. Availability depends on your meter type and the supplier’s criteria.
How quickly can I switch?
Switching timelines vary, but many UK switches complete within days. Your supply won’t be interrupted — only the company billing you changes.
Is this service for business energy?
No. This page and form are for UK home energy comparisons only.
What UK households like about comparing with EnergyPlus
A few examples of the feedback we aim to earn on every switch — clear options, transparent terms, and support when it matters.
“The comparison was easy to follow. I could see unit rates and standing charges clearly, not just a headline discount.”
Homeowner, Yorkshire
“I wanted a fixed deal for budgeting. The guidance on exit fees and contract length helped me choose confidently.”
Tenant, Greater Manchester
“Quick form, fast follow-up and no pressure. The tariff summary made the ‘price guarantee’ wording much clearer.”
Household, South Wales
Trust & transparency checklist
- Whole-of-market comparison focus (availability depends on your details)
- Clear presentation of unit rates, standing charges, term length and fees
- Home energy only — not business energy switching
Ready to compare price guarantee energy tariffs?
Submit your details to see available home energy tariffs that may include a price guarantee or guaranteed discount. We’ll help you compare the rates that matter for your postcode.
- Whole-of-market comparison approach
- See key terms before you switch
- No interruption to your gas or electricity supply
Already know your current tariff end date? Having it to hand can help you avoid unnecessary exit fees.
Fast checklist
- Find your postcode
- Decide: fixed for certainty, or flexible options
- Compare total costs (rates + standing charges)
- Switch and take a meter reading on switch day
Next step: Use the form above to get personalised results based on your home and postcode.
Back to Energy Suppliers