Energy Tariff Comparison: What to Check Beyond Just Price

June 19th, 2025
Energy Tariff Comparison: What to Check Beyond Just Price

Why Energy Tariff Comparison Matters in 2025

The energy market keeps changing, and energy costs are going up. You need to know what is happening. Every three months, there is an update to the energy price cap. This can change what you have to pay. So, now is a good time to look at your tariff and do an energy tariff comparison. This will help you find what works best for you. Don’t only look for the cheapest choice. Take time to see all the options about your tariff and find one that fits you best.

Low energy prices are good, but the best tariff is not always just the lowest one out there. A good tariff should give you more than saving money. You also need features and service that work well for you. A smart meter, ways to use renewable sources, or a plan that lets you charge your electric vehicle could be important to you. Make sure you have a balance of these things with the price, so you get the best value.

What to Look for Beyond Price

Before you start to compare, you need to know your postcode and who your current energy supplier is. This is because you will get quotes that match where you live and how much energy you use.

1. Tariff Type: Fixed vs Variable

  • Fixed tariff: The unit price does not change for a set time. You get stability with this if the market costs go up or down.
  • Variable tariff: The price can go up or down with the market, or when there is a price cap. This option gives you some flexibility with your tariff.

Check if the tariff has any exit fees. Some of the tariffs do have these, even if the rates can change.

2. Meter Compatibility

  • Smart meter: A smart meter will read your energy use by itself. It can help you get energy plans that fit you better.
  • Prepayment meter: A prepayment meter may not have all the tariffs to pick from, but some of the new prepayment tariffs can give you a good price.

Be sure the new tariff supports your meter type.

3. Billing and Payment Methods

Your payment method affects the deal:

  • You can often get a discount if you pay by Direct Debit.
  • If you pay when you get the bill, it can cost more.
  • Some suppliers give payment plans, and these help with budgeting.

Check that the payment method is right for you and your home. Make sure it goes with your money plan and what you need.

4. Fuel Type and Usage Patterns

  • Are you on dual fuel or do you use only electricity?
  • How much electricity or gas do you use every day?
  • Do you get, use, or need more energy at night, like when you charge your electric vehicle?

Some electricity deals work well for people who use more power when it is not a busy time. These deals can also be good if your energy usage is steady.

5. Additional Perks and Policies

  • You can get warm home discounts or cashback offers.
  • The UK gives you green energy that comes from renewable sources.
  • You will have good customer service because there are UK-based call centres.

These things can make a big difference in how happy you feel when you get a new supplier.

Comparing Tariff Details Side-by-Side

Feature Why It Matters
Tariff Type Impacts stability and pricing
Unit Rate & Standing Charge Core cost of energy per day/unit
Payment Method Affects eligibility and potential discounts
Exit Fees Cost of leaving early
Contract Length Commitments usually 12–24 months
Renewable Content Environmental impact and sustainability

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Real Example: Two £1,900 Tariffs, Very Different Value

Feature Tariff A Tariff B
Price £1,900/yr £1,900/yr
Tariff Type Fixed (24 mo) Variable
Exit Fees £60 None
Payment Method Monthly Direct Debit Pay on Receipt
Smart Meter Support Yes No
Renewable Energy 100% Mixed

Tariff A helps you keep track of your spending. It is good for the environment too. You can also choose how you want to get your bills. Even when the total price for the year is the same, the potential savings and the way you feel about using this tariff can still be different.

When to Review and Switch

  • At the end of a fixed tariff
  • Before the price cap changes
  • When your energy bills start to go up
  • After you see a change in energy usage (for example, if you buy an EV)

Use a trusted energy price comparison tool to see what prices are out there. You should check this now and then. The tool is good for renters, people who own a home, and any landlord with a property. Make sure you know how much you use in one year in kWh. This helps you get the best and most correct energy price comparison.

When to Review and Switch Energy supplier

Correct as of 09 June 2025

FAQs About Energy Tariff Comparison

What’s the difference between a fixed and variable tariff?

A fixed tariff means you will pay the same price for each unit of your energy. A variable tariff can go up or down when the energy price cap changes or when something happens in the energy market. A tariff can help people know what they will pay. But with a variable tariff, the cost might go up or down because of the price cap or changes in the energy market.

Are prepayment meter customers limited in choice?

Some prepayment tariffs now are good for people. You can also ask if you can change your meter.

Does a smart meter help?

Yes. It gives you clear billing so you always know what you pay. It may also let you have smart-only energy deals.

Is it worth switching suppliers often?

Yes, this is true, especially if you are on a default rate. A new supplier will often give special offers. They do this because they want to get you as a customer.

What’s the best site for tariff comparison?

Use an Ofgem-accredited energy comparison site to look at all the different energy suppliers. You can pick what is most important to you and filter the options so you find what fits your needs.

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