Cheapest energy suppliers right now in the UK! (2025)

Last updated: 1st August 2025

We’ve reviewed the cheapest energy suppliers available in August 2025, so you can see if you can save by switching.

Keep reading to find the cheapest energy providers available right now and see if you can find a better deal than your current energy supplier.

Below is a high-level view of the cheapest energy suppliers for August 2025 based on different tariff options:

• Cheapest supplier overall: Octopus Energy with their variable tariff at £1,514 per year.
• Cheapest variable tariff: Again, Octopus Energy with their variable tariff at £1,514 per year.
• Cheapest fixed tariff: Outfox Energy with their fixed tariff at £1,520 per year.

Below is an overview of the top 10 cheapest energy suppliers right now for August 2025. Keep reading to see a more in-depth explainer on each supplier, including customer service and Trustpilot scores.

1. Octopus Energy

Octopus has become one of the UK’s most trusted suppliers, known for innovative tariffs, 100% renewable energy, and top-tier customer service. It frequently wins awards and is especially popular among tech-savvy and green-conscious customers.

Cheapest Tariff:

• Tracker Tariff
• £126.16/month (£1,514/year) – Plus you get can £50 credit!
• Exit Fee: £0

Customer Service Snapshot:

• Trustpilot: 4.8 / 5 (469,000 reviews)
• Citizens Advice Overall Score: 4.4 / 5
• Call Wait Time: 01:01
• Complaints per 10,000 Customers: 4.2

Why pick Octopus Energy?
Octopus offers an unbeatable blend of innovation, ethics, and service. With no exit fees, great prices, and glowing reviews, it’s one of the most consistently recommended suppliers in the UK, especially for those who want flexible green energy and excellent digital tools.

2. Home Energy

Home Energy launched in 2024 and quickly made waves by offering the UK’s cheapest variable tariff. The company markets itself as a digital-first provider with ultra-fast customer service, including sub-minute chat response times.

Cheapest Tariff:

• Fair Variable Dual (Variable)
• £126.33/month (£1,516/year)
• Exit Fee: £0

Customer Service Snapshot:

• Trustpilot: 4.2 / 5 (311 reviews)
• Citizens Advice Overall Score: 3.9 / 5
• Call Wait Time: 00:17
• Complaints per 10,000 Customers: 7.3

Why pick Home Energy?
If your top priority is value for money with flexibility, Home Energy is hard to beat. Its Fair Variable tariff undercuts most competitors, and it comes with no exit fee, allowing you to switch at any time. Their fast support and simple pricing model make it a particularly attractive choice for renters or anyone who doesn’t want to be locked into a long contract.

3. Outfox Energy

Outfox Energy (formerly known as Outfox the Market) has carved out a reputation for ultra-competitive fixed deals and straightforward customer service. It appeals especially to frequent switchers and budget-conscious consumers.

Cheapest Tariff:

• Fix’d 12m (Fixed)
• £126.67/month (£1,520/year)
• Exit Fee: £100

Customer Service Snapshot:

• Trustpilot: 3.9 / 5 (4,500 reviews)
• Citizens Advice Overall Score: 3.7 / 5
• Call Wait Time: 01:22
• Complaints per 10,000 Customers: 14.2

Why pick Outfox Energy?
Outfox’s Fix’d 12m tariff offers strong value and price certainty for 12 months. While not the absolute cheapest overall, it’s one of the best fixed options available. The provider performs reliably in service ratings and is a smart pick for those wanting a balance of price and predictability.

4. Fuse Energy

Founded by former Revolut executives in 2022, Fuse Energy combines smart tech with competitive pricing. It’s one of the fastest-growing new suppliers, with an app that provides real-time energy usage and AI-optimised recommendations.

Cheapest Tariff:

• Variable Smart (Variable)
• £127.42/month (£1,529/year)
• Exit Fee: £0

Customer Service Snapshot:

• Trustpilot: 4.7 / 5 (910 reviews)
• Citizens Advice Overall Score: Not available
• Call Wait Time / Complaints: Not available

Why pick Fuse Energy?
Fuse Energy is an excellent choice for tech-savvy households. The Variable Smart tariff is very competitively priced and ideal for people who want live visibility into their usage and the option to save dynamically. The provider’s high Trustpilot rating suggests a strong start in customer satisfaction.

5. Ecotricity

Ecotricity, founded in 1995 by Dale Vince, is a pioneer in green energy. It reinvests all profits into building new UK wind and solar projects, making it one of the most ethically-driven suppliers on the market.

Cheapest Tariff:

• Green Fix (Fixed)
• £137.67/month (£1,652/year)
• Exit Fee: £100

Customer Service Snapshot:

• Trustpilot: 4.3 / 5 (6,223 reviews)
• Citizens Advice Overall Score: 3.8 / 5
• Call Wait Time: 01:10
• Complaints per 10,000 Customers: 15.1

Why pick Ecotricity?
For customers who care deeply about sustainability, Ecotricity is one of the most ethically sound options available. You’ll pay slightly more, but your bill supports new renewable infrastructure, not shareholders. A meaningful choice for green-minded consumers.

6. Tulo Energy

A newcomer built by the same team behind Outfox Energy, Tulo Energy keeps things simple with just a couple of tariffs and digital-first operations. It targets customers who want fuss-free green electricity.

Cheapest Tariff:

• Tulo Fixed 12m (Fixed)
• £128.58/month (£1,543/year)
• Exit Fee: £50

Customer Service Snapshot:

• Trustpilot: 4.6 / 5 (3,750 reviews)
• Citizens Advice Overall Score: Not available
• Call Wait Time / Complaints: Not available

Why pick Tulo Energy?
If you want green electricity with minimal faff, Tulo delivers. Their 12-month fixed deal is priced attractively and comes with a relatively low exit fee, making it a good middle-ground between flexibility and price security.

7. OVO Energy

OVO is one of the UK’s largest independent suppliers, known for its focus on net-zero initiatives and smart home integration. Since its acquisition of SSE’s retail arm, OVO has offered strong customer support and a wide range of tariffs.

Cheapest Tariff:

• 1 Year Fixed + Boiler Cover (Fixed)
• £133.00/month (£1,595/year)
• Exit Fee: £100

Customer Service Snapshot:

• Trustpilot: 4.4 / 5 (146,000 reviews)
• Citizens Advice Overall Score: 3.5 / 5
• Call Wait Time: 01:12
• Complaints per 10,000 Customers: 21.8

Why pick OVO Energy?
OVO’s fixed tariff with boiler cover is ideal for homeowners looking for price certainty with added protection. The inclusion of boiler cover adds tangible value, and their net-zero vision may appeal to environmentally-conscious customers who also value tech-driven service.

8. So Energy

So Energy is a small but growing supplier, consistently praised for its customer care and transparent green credentials. All electricity supplied is 100% renewable, and the company frequently ranks well for its service.

Cheapest Tariff:

• So Epping One Year – Green (Fixed)
• £137.00/month (£1,644/year)
• Exit Fee: £100

Customer Service Snapshot:

• Trustpilot: 4.5 / 5 (10,000 reviews)
• Citizens Advice Overall Score: 4.2 / 5
• Call Wait Time: 01:05
• Complaints per 10,000 Customers: 9.4

Why pick So Energy?
If you’re seeking outstanding service and verified green electricity, So Energy delivers on both counts. Their one-year fix is well-priced, and their consistently low complaint rates make them a standout for customer satisfaction.

9. EDF Energy

The French government owns a major player in the UK energy market, EDF and supplies a large portion of the country’s low-carbon electricity via its nuclear fleet. It’s well-established and offers reliable service.

Cheapest Tariff:

• Simply Fixed Aug26v5 (Fixed)
• £138.17/month (£1,658/year)
• Exit Fee: £100

Customer Service Snapshot:

• Trustpilot: 4.8 / 5 (156,000 reviews)
• Citizens Advice Overall Score: 2.7 / 5
• Call Wait Time: 02:16
• Complaints per 10,000 Customers: 72.7

Why pick EDF Energy?
EDF is a safe, stable choice for those who want low-carbon energy from a legacy provider. While its service scores are mixed, its fixed deal is competitively priced and ideal for customers seeking long-term certainty from a recognisable brand.

10. Utility Warehouse

Utility Warehouse (UW) offers more than just energy, bundling broadband, mobile, and insurance services in a single account. While historically niche, its pricing has become increasingly competitive.

Cheapest Tariff:

• UW Fixed Saver 55 (Fixed)
• £139.25/month (£1,671/year)
• Exit Fee: £150

Customer Service Snapshot:

• Trustpilot: 4.4 / 5 (36,000 reviews)
• Citizens Advice Overall Score: 3.3 / 5
• Call Wait Time: 01:54
• Complaints per 10,000 Customers: 34.2

Why pick Utility Warehouse?
UW is a strong option for customers already using (or wanting to bundle) other household services. Their fixed rate isn’t the lowest, but bundling can unlock substantial savings overall. Their solid customer support also offers peace of mind.

*We have used the usage data for an average 3-bed house in the East Midlands. Please get a quote from the energy supplier to see if they are cheaper for you, as prices vary depending on location and usage.

Tips for Securing the Best Energy Deal

1. Compare Regularly

Energy prices change frequently, so it’s essential to compare deals regularly. Websites like Uswitch, Compare the Market, and MoneySuperMarket make this process straightforward by showing you a range of options based on your postcode and usage.

2. Consider Your Usage Patterns

Some tariffs are more beneficial depending on your usage patterns. For instance, if you use more energy during off-peak hours, a time-of-use tariff like Octopus Agile could save you money. Conversely, if your usage is consistent, a fixed-rate plan might be more suitable.

3. Check for Exit Fees

Some energy plans come with exit fees, which can make switching more expensive. Always check the terms and conditions of your current and potential new plan to ensure you won’t be hit with unexpected costs.

4. Look for Incentives and Rewards

Many energy companies offer incentives to new customers, such as cashback or bill credits. These can provide additional savings and make a new plan even more attractive.

5. Consider Green Energy

While price is important, considering the environmental impact of your energy usage is also crucial. Many of the cheapest energy deals now come from suppliers offering 100% renewable electricity, allowing you to save money and reduce your carbon footprint.

Final thoughts

Switching energy suppliers might seem like a hassle, but the potential savings make it well worth the effort. The current market offers a range of options, from flexible, variable tariffs to stable, fixed-rate plans, so there’s something to suit every household’s needs.

As we head into the summer months, now is the perfect time to review your energy usage and make the switch to a more cost-effective plan. Keep an eye on the market, use comparison tools, and don’t be afraid to make a change. Your wallet will thank you.

Share Your Experience

Have you recently switched energy suppliers and found a great deal?

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