How do I find the best energy deal for a new customer?

To find the best energy deal as a new customer, enter your postcode and current usage on our comparison page. We analyse tariffs from a wide range of UK energy suppliers and rank them by estimated annual cost, tariff type and contract length. This makes it easy to spot the cheapest new-customer tariffs and switch directly to the offer that gives you the best overall value.

Can new customers really save money by switching energy supplier?

Yes, new customers can often save a significant amount by switching to a cheaper supplier, especially if you are on a standard variable tariff or haven’t switched in the last 12 months. By comparing live deals on our "Cheapest UK energy suppliers for new customers" page, many households can reduce their annual bills by choosing a lower unit rate, a fixed tariff or a supplier offering new-customer incentives such as bill credits.

What information do I need to switch to a cheaper energy supplier?

To switch to a cheaper energy supplier as a new customer you usually need your postcode, an idea of your annual or monthly gas and electricity usage (found on your latest bill), the name of your current tariff, and your bank details if you choose to pay by Direct Debit. Once you have these, you can compare deals on our site and complete your switch online in just a few minutes.

How long does it take to switch to a new energy supplier?

For most UK households, switching to a new energy supplier takes around 5 working days from the date you agree the new tariff. There is no interruption to your gas or electricity supply during the switch. Your new supplier will contact you with a start date and may ask for opening meter readings to ensure your final and first bills are accurate.

Will my energy supply be interrupted if I change to a cheaper supplier?

No, your energy supply will not be interrupted when you change to a cheaper supplier. The gas and electricity come through the same pipes and cables; only the company that bills you and the tariff you pay will change. The switch is handled automatically between suppliers, and you should not notice any difference other than a potentially lower bill.

Are fixed tariffs better for new customers than variable tariffs?

Fixed tariffs can be a good option for new customers who want price certainty, because your unit rates and standing charge are locked for the duration of the contract. Variable tariffs can move up or down with wholesale prices and Ofgem’s price cap. The best choice depends on whether you prioritise the absolute cheapest price available today or predictable bills over the next 12‑24 months. Our comparison page clearly shows whether each cheap deal is fixed or variable so you can choose what suits you.

Can I switch if I’m in debt to my current energy supplier?

If you have been in debt to your current energy supplier for less than 28 days, the outstanding amount will usually be added to your final bill and you can still switch. If the debt is older than 28 days, you may need to clear the balance or agree a repayment plan before switching. It’s still worth comparing suppliers so you know how much you could save once you are able to move to a cheaper tariff.

Are there exit fees for leaving my current energy tariff early?

Some fixed energy tariffs charge an exit fee if you leave before the end of the contract, while standard variable tariffs usually do not. Before switching to a cheaper supplier, check your current tariff’s terms for any exit fees and compare these with the potential annual saving shown on our website. In many cases, the savings from moving to a cheaper new-customer deal outweigh any exit charges.

Do I need a smart meter to get the cheapest energy deals?

You do not always need a smart meter to access the cheapest energy deals, but some suppliers offer their best tariffs only to customers with a smart meter or those willing to have one installed. When you compare suppliers on our site, we clearly indicate if a tariff requires a smart meter so you can decide whether to proceed or choose a different cheap deal.

How often should I compare UK energy suppliers as a new customer?

Energy prices and tariffs change regularly, so it is wise to compare UK energy suppliers at least once a year or whenever your fixed deal is due to end. New customers in particular can benefit from checking our "cheapest energy suppliers" page whenever Ofgem updates the price cap or when major suppliers launch new tariffs, as this is often when the biggest savings appear.

Cheapest UK Energy Suppliers for New Customers

Q: Who are the cheapest UK energy suppliers for new customers right now?

The cheapest UK energy suppliers for new customers change frequently as tariffs are updated. On this page we continually compare leading gas and electricity providers to highlight which suppliers currently offer the lowest unit rates and standing charges for new sign-ups. Use our comparison table to see today’s cheapest deals and click through to switch online in a few minutes.

Find and compare the cheapest home energy suppliers for new customers in the UK. See live tariffs, lock in better rates and switch online in just a few minutes.

Compare cheap home energy deals in minutes

Energy prices change quickly, and new customer deals are often time-limited. Our comparison tool makes it easy to see which UK energy suppliers are currently offering the lowest prices for gas and electricity in your area, so you never pay more than you need to.

✓ View the cheapest UK energy suppliers for your postcode
✓ Compare fixed and variable home energy tariffs
✓ Check direct debit, prepayment and smart meter options
✓ Switch online with no interruption to your supply

Get your cheapest home energy quote

Tell us a few details about your home and we’ll find the best priced tariffs from trusted UK suppliers.

Postcode

Property type

Number of bedrooms

Energy type

Current supplier (optional)

Email address

Phone number

I’d like to receive occasional updates about cheaper home energy deals.

By clicking compare you agree to our terms and privacy policy. We’ll never switch you without your permission.

How to find the cheapest UK energy supplier for your home

There is no single supplier that is always the cheapest for every household. The best value for you depends on your region, how much gas and electricity you use, the type of meter you have and whether you prefer a fixed or variable tariff. Our comparison helps you quickly see which UK home energy supplier is cheapest for new customers like you right now.

1. Enter a few details

Share your postcode and property details so we can pull in accurate standing charges and unit rates for your area.

2. Compare tariffs instantly

We search a wide range of UK home energy suppliers and list them by total estimated annual cost for new customers.

3. Switch online, securely

Choose the tariff that suits you best and complete your switch online. Your new supplier handles everything.

What makes an energy supplier “cheapest” for new customers?

When you hear about the cheapest energy suppliers in the UK, it usually refers to the suppliers that offer the lowest overall annual cost for a typical home. This isn’t just about the unit price of gas or electricity. It also includes:

Unit rates (pence per kWh) – what you pay for each unit of energy used.
Standing charges – the fixed daily fee you pay just for being connected.
Payment method – direct debit, pay on receipt of bill or prepayment meter.
Online discounts or paperless billing – often reserved for new switchers.
Fixed term incentives – such as loyalty credits or welcome bonuses.

Our comparison combines all of these into a clear, estimated annual cost so you can quickly see which home energy supplier is genuinely cheapest for you as a new customer.

Tip: don’t chase price alone

The cheapest tariff isn’t always the best overall deal. Look at:

Exit fees if you leave early
Customer service ratings
Smart meter and app support
Green or renewable options

Types of cheap home energy tariffs for new customers

Energy suppliers structure their tariffs differently depending on how you use energy and how much price certainty you want. Here are the main options you’ll see when comparing the cheapest UK energy suppliers for new customers:

Fixed rate tariffs

With a fixed rate tariff, your unit prices and standing charges are locked in for a set period – typically 12, 24 or 36 months.

Great for budgeting and avoiding surprise price rises.
Often include exit fees if you switch before the end date.
Some suppliers offer special fixed deals just for new customers.

If you prefer price certainty, a cheap fixed rate tariff from a reputable supplier can be a smart choice.

Variable rate tariffs

Variable tariffs move up or down when your supplier changes their prices. You’re not tied into set unit rates.

Usually no exit fees, so you can switch again if prices fall elsewhere.
You benefit more quickly from wholesale price drops.
Your bills can rise during periods of high market prices.

If you value flexibility over certainty, a cheap variable tariff might be right for you.

Dual fuel deals

Many households take both gas and electricity from the same supplier on a dual fuel tariff.

Convenient – a single bill and one point of contact.
Some suppliers apply a dual fuel discount.
Not always cheaper than taking gas and electricity separately, so it’s worth comparing.

Green & renewable tariffs

Many of the cheapest UK home energy suppliers now offer tariffs backed by renewable electricity and, in some cases, carbon-offset gas.

Support more sustainable energy generation.
Prices are often competitive with standard tariffs.
Great if you want to cut bills and your carbon footprint.

Ready to see the cheapest suppliers for your home?

Enter your postcode and a few quick details and we’ll show you live quotes from trusted UK suppliers in seconds.

Start your comparison

Why switch home energy supplier as a new customer?

If you have just moved into a new home, or you’ve been on the same tariff for a long time, there’s a good chance you’re not on the cheapest deal available. Many households are put onto a default standard variable tariff when a fixed deal ends or when they move into a property.

Default tariffs are rarely the most competitive. By switching to a supplier that is actively competing for new customers, you could:

Cut your annual energy bills by moving to a cheaper tariff.
Get better customer service and modern app features.
Switch to a greener tariff without paying a premium.
Lock in prices to protect against future market volatility.

Using a comparison tool means you don’t have to manually check each supplier yourself. You see all the main options in one place, with clear pricing and key features.

Information you’ll need to compare

To get the most accurate comparison from the cheapest UK energy suppliers for new customers, it helps to have:

Your postcode and house number
Your current supplier and tariff name (if known)
Your annual usage in kWh from a recent bill, or monthly spend
Whether you pay by direct debit, on receipt of bill or prepayment

Don’t worry if you don’t have everything to hand – we can still estimate your usage based on similar homes in your area.

Comparing big six and challenger energy suppliers

The UK home energy market includes a mix of large, well-known brands and smaller challenger suppliers. Both can offer some of the cheapest deals for new customers, but they have different strengths.

Larger, established suppliers

These include long-standing brands with millions of customers across the UK.

Typically extensive customer support options and call centres.
Often bundle services such as boiler cover or smart home products.
May not always be the absolute cheapest, but some run strong new customer offers.

Smaller & challenger suppliers

These newer providers often compete aggressively on price and customer experience.

Can offer very competitive tariffs for new switchers.
Frequently focus on green energy or flexible, tech-driven services.
Service levels can vary, so check customer reviews and ratings.

Is now a good time to switch energy supplier?

Wholesale energy markets, the Ofgem price cap and government support schemes all affect how much you pay for gas and electricity. That means the best time to switch can change, but there are some simple rules of thumb:

If your fixed tariff is ending within the next few months, it’s worth comparing prices now.
If you’re on a standard variable tariff, you can usually move to a cheaper new customer deal with no exit fees.
If prices have been falling, switching to a new fixed tariff could protect you from future rises.
If prices are high and volatile, you may prefer a short fixed deal or a flexible variable tariff while you wait.

Our comparison shows you the latest tariffs available today so you can decide whether switching now makes sense for your home.

How the home energy switching process works

Switching to one of the cheapest UK energy suppliers for new customers is straightforward and regulated to keep you safe. Here’s what to expect:

Choose your deal

Compare tariffs, filter by what matters to you, and select the supplier and deal you prefer.

Provide details

Share some personal details, your supply address and how you want to pay.

Supplier handles the switch

Your new supplier contacts your old one. You’ll be asked for meter readings on the changeover day.

Enjoy cheaper bills

You won’t notice any physical change to your gas or electricity – just a cheaper tariff and new bills.

Frequently asked questions about cheap home energy suppliers

Will my energy be interrupted if I switch?

No. Gas and electricity are delivered through the same pipes and wires, regardless of who you pay. Your supply will continue as normal while your new supplier takes over billing.

Do I have to pay to switch supplier?

You don’t pay a fee to use our comparison. Some fixed tariffs include an exit fee if you leave before the end of the contract, but this will be clearly shown so you can decide whether switching is still cheaper overall.

How long does it take to switch to a new supplier?

Most home energy switches complete within 5–15 working days, depending on the supplier and your cooling-off period. Your new supplier will keep you updated with expected timelines.

Can I switch if I rent my home?

In most cases yes, especially if you pay the energy bills directly. Check your tenancy agreement, but suppliers and regulators generally support tenants finding cheaper deals to reduce their bills.

What if my current supplier owes me money?

When you switch, your old supplier will send a final bill based on your meter readings. If you’re in credit, they’ll refund you. If you owe money, you’ll need to settle the remaining balance.

Simple ways to reduce your home energy usage

Finding the cheapest UK energy supplier for new customers is one part of the picture. You can save even more by reducing how much gas and electricity you use at home:

Turn your thermostat down by 1°C to shave money off your heating bills.
Use LED bulbs in every room to cut electricity usage.
Switch off appliances at the plug rather than leaving them on standby.
Use smart plugs or timers for heaters and larger appliances.
Fill the washing machine and dishwasher before running them.

Combining a cheaper tariff with simple efficiency steps can make a significant difference to your annual energy costs.

Remember

You don’t have to change your boiler, radiators or wiring to switch supplier. It’s purely an administrative change that can save you money without any disruption.

Compare the cheapest UK energy suppliers for your home today

Enter your postcode, compare live tariffs from leading UK suppliers and switch online in minutes. There’s no obligation, and you could start saving on your home energy bills as soon as your new tariff goes live.

Find my cheapest home energy deal

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Updated on 12 Dec 2025