Are you tired of overpaying for your gas and electricity each month? With rising living costs and ongoing changes in the UK energy market, finding the cheapest gas and electric supplier in 2025 has never been more important.
Whether you’re renting a flat, managing a busy family home, or just trying to get better value, there are affordable energy options out there, you just need to know where to look.
Switching suppliers is easier than you might think and can save you hundreds of pounds annually. But it’s not just about finding the lowest price, it’s about choosing a provider that offers reliability, support, and flexibility that matches your needs.
This guide breaks down the top 10 cheapest gas and electric suppliers in the UK for 2025, with insights into what makes each one unique, so you can decide which fits your home best.
Is It Worth Switching Energy Suppliers in 2025?
Yes, switching energy suppliers in 2025 can be one of the easiest ways to lower your household costs. The UK energy market has become more competitive, and most suppliers offer flexible tariffs with better rates than standard variable plans. Thanks to Ofgem’s regulations, switching is also safe, fast, and stress-free.
Here’s why you should consider switching:
- You could save up to £300 per year by moving to a cheaper tariff
- Most suppliers no longer charge exit fees, offering more freedom
- Comparison tools make it easier than ever to find your best match
- Customer service ratings are publicly available to help you choose
The benefits don’t stop at savings. Many new suppliers are offering green energy options, loyalty perks, and smart tech that puts you in control of your usage.
If your current provider hasn’t impressed you with rates or service, switching could be the smartest move you make this year.
How Much Can You Actually Save with a Cheaper Energy Supplier?
Your savings will depend on your current tariff, energy usage, and where you live, but for most UK households, switching to a cheaper supplier can result in notable annual savings.
Households moving from a standard variable tariff to one of the most affordable fixed deals in 2025 could see a drop of £200–£400 per year on average.
Let’s break it down further:
- Single-person flat: Potential savings of £100–£200
- 3-bedroom semi-detached home: Savings of £250–£400
- Large households or families: £400+ with the right tariff
Using comparison sites or going direct to suppliers like Outfox the Market, E Energy, or Utility Warehouse can quickly show how much you could save.
Be sure to check whether the deal is fixed or variable, whether you’ll receive green energy, and if there are additional perks like cashback or loyalty points.
What’s the Best Tariff Type in 2025 – Fixed, Variable or PAYG?
Choosing the right energy tariff isn’t just about cost, it’s about flexibility and control. In 2025, most UK energy suppliers offer fixed tariffs, variable rate plans, and Pay As You Go (PAYG) options, each with their own advantages.
Here’s a breakdown:
| Tariff Type | Best For | Key Benefits | Considerations |
| Fixed Tariff | Budget certainty | Locked-in rates for 12–24 months | May miss out on price drops |
| Variable Tariff | Flexibility | Price drops passed on to you | Prices can increase suddenly |
| PAYG | Full control | Only pay for what you use | Requires regular monitoring |
- Fixed tariffs suit those who want price security
- Variable plans can save money if rates fall
- PAYG is ideal for tighter budgets or renters
Depending on your lifestyle, you may prefer a supplier like Utility Warehouse for PAYG, or Octopus Energy for tech-led fixed and smart tariffs. Make sure to compare based on your household needs.
Best 10 Cheapest Gas and Electric Supplier
1. Utility Warehouse
Utility Warehouse is more than just an energy provider, it’s a comprehensive service that bundles your utilities, helping you save money across gas, electricity, broadband, mobile, and even insurance.
If you’re searching for one of the most affordable and hassle-free options in 2025, Utility Warehouse is a standout. By combining multiple services under one roof, you simplify billing and get attractive discounts, making it a smart choice for cost-conscious households.
One of their biggest advantages is flexibility and support when switching. They actively encourage customers to change providers by paying exit fees and rewarding bundles with cashback credit.
What You’ll Get:
- Up to £400 paid towards early termination fees
- Up to £150 Cashback Card credit when you bundle services
- Smart prepayment meter available for Pay As You Go users
- Easy monitoring of energy usage via mobile or desktop
- Personalised budget alerts and energy tracking tools
For those who prefer greater control over their energy spend, the Pay As You Go feature using a smart meter is ideal. You can top up as needed and never worry about unexpected surprises.
Utility Warehouse also provides dedicated support through local partners, making your switch easier and your questions answered quickly. If you’re looking to simplify your services and maximise value, Utility Warehouse is a great place to start.
2. Octopus Energy
Octopus Energy has earned its place as one of the most affordable and innovative energy suppliers in the UK. It’s known for its commitment to green energy, smart tech solutions, and excellent customer service.
If you’re seeking a cheaper gas and electric supplier with a modern approach to energy management, Octopus is hard to beat.
One standout feature is their “Power Up” initiative. It provides emergency top-ups when your balance runs low, so you’re never left without power. This is ideal for customers using prepayment meters who need short-term support, without penalties or unnecessary stress.
What You’ll Get:
- Emergency top-ups up to £25 with Power Up
- Fair repayment options – choose how fast to pay it back
- Offers 100% renewable electricity as standard
- Highly rated for transparent tariffs and no exit fees
- Tech-first platform with easy app control and automation
Octopus Energy also supports greener living through solar panel and heat pump options, offering long-term savings.
Their agile and smart tariffs can track energy prices in real time, helping you save even more if you adjust usage habits. If you value sustainability, fair pricing, and customer-first policies, Octopus Energy provides exceptional value in 2025.
3. Outfox the Market
If your priority is saving money on your energy bills, Outfox the Market is one of the most competitively priced gas and electric suppliers in the UK.
Since launching in 2017, they’ve built a strong reputation for offering tariffs that consistently fall below Ofgem’s energy price cap, giving you dependable affordability throughout the year.
They’ve carved out a niche by combining low prices with responsive customer service. Outfox the Market is ideal if you’re after simplicity, clarity, and value from a UK-based provider committed to keeping bills down.
What You’ll Get:
- Tariffs consistently below the price cap
- Transparent pricing with no hidden fees
- Diverse energy mix: 40.8% from renewables
- Customer-first support model
- No frills, no gimmicks, just low-cost energy
What sets them apart is their straightforward approach. They don’t complicate things with bundles or add-ons. Instead, they focus on reliable service, budget-friendly pricing, and energy efficiency.
If you’re tired of overpaying and want an energy supplier that keeps things fair and simple, Outfox the Market is a serious contender for your switch in 2025.
4. Ecotricity
If environmental impact matters to you as much as cost, Ecotricity delivers on both fronts. They were the first UK energy supplier to offer 100% green electricity, and they continue to lead the charge in sustainable energy.
While they may not always have the absolute lowest tariffs, the long-term value in supporting a carbon-free future is hard to ignore.
Their commitment goes far beyond just clean power, they’re actively building green gasmills, funding wind and solar farms, and reinvesting profits into the green transition.
What You’ll Get:
- 100% green electricity and green gas from renewable sources
- Investments in wind and solar parks across the UK
- Profits reinvested into building a cleaner energy grid
- Clear alternative to fossil fuel dependency
- Ethical, purpose-driven energy for eco-conscious consumers
If you want your bills to fund the future of sustainable living, Ecotricity gives you that option with no compromises on supply or reliability.
They’re perfect for those who want to reduce their carbon footprint while still enjoying dependable home energy service in 2025.
5. Sainsbury’s Energy
Sainsbury’s Energy combines competitive energy tariffs with exclusive Nectar rewards, giving everyday savings a meaningful boost.
It’s especially ideal if you already shop at Sainsbury’s, as you can earn thousands of bonus Nectar points when switching and continue racking them up while you pay your bills.
Their partnership with E.ON ensures reliable energy delivery, while their tariffs offer a mix of fixed, variable, and tracker options to suit every household.
What You’ll Get:
- Earn up to 8,000 Nectar points when switching
- Choose from fixed, variable, or tracker tariffs
- No exit fees on select plans
- Additional savings on home upgrades (e.g., EV chargers, solar)
- Safe, predictable pricing with the Track & Reward plan
Sainsbury’s Energy stands out by rewarding loyalty in ways that extend beyond energy bills. You’ll not only save on utilities but also maximise shopping rewards, perfect for families looking to make every pound work harder. If you want value beyond the meter, this supplier is well worth considering in 2025.
6. EDF Energy
EDF Energy is one of the UK’s most well-known suppliers, and their wide range of tariffs, green initiatives, and customer support options make them a solid pick for both value and service.
Whether you’re after a low fixed-rate tariff or want to invest in home energy upgrades, EDF offers scalable solutions for every budget.
Although they’re one of the UK’s larger suppliers, EDF maintains a strong reputation for competitive pricing and flexible contract terms, especially for those wanting longer-term peace of mind.
What You’ll Get:
- Backed by one of the largest suppliers in Europe
- Green electricity options available
- Competitive pricing with fixed and variable tariffs
- Great support for home efficiency upgrades
- Ideal for stability and strong customer service
With EDF, you can enjoy predictable bills and the security of a reliable, established provider. If you’re looking for trust, longevity, and flexible energy plans from a big-name supplier, EDF Energy may be the right choice for you in 2025.
7. So Energy
So Energy is a growing UK supplier offering affordable rates backed by a strong environmental commitment.
Their electricity is 100% renewable, and their tariffs are designed to keep things simple and cost-effective, making them an excellent alternative if you’re looking for both savings and sustainability in 2025.
Rated highly for customer satisfaction, So Energy balances low prices with top-tier service. It’s a great choice for those who want green credentials without the premium price tag.
What You’ll Get with So Energy:
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100% renewable electricity included as standard
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Clear, fixed-price tariffs with no hidden fees
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UK-based customer support with quick response times
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One of the lowest-cost green suppliers on the market
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Offers both dual fuel and electricity-only tariffs
So Energy proves that going green doesn’t have to mean paying more. With a transparent pricing structure and commitment to clean energy, they’re a strong contender for households wanting value with a conscience.
8. 100Green
100Green (formerly Green Energy UK) is the only UK energy supplier that doesn’t use carbon offsetting, because their electricity and gas are already 100% renewable and fossil-free. They go beyond “greenwashing” to offer truly ethical energy, with no tricks or exit fees.
This supplier is perfect for those who want their energy choices to match their environmental values without compromising on service or control.
What You’ll Get:
- No fossil fuels used – ever
- Fully green gas and electricity
- No exit fees or penalties
- Speak to real people – no chatbots or menus
- Ethical customer-first philosophy
If you’re tired of the same scripted support and want a real connection with a sustainable energy provider, 100Green delivers genuine environmental commitment with people-powered service that truly stands out in the UK energy market.
9. E Energy
E Energy keeps things refreshingly simple. Based in Birmingham and proudly British-owned, this supplier focuses on keeping costs low without the fluff.
Their transparent pricing and no-exit-fee policy have made them popular with over 300,000 customers who want reliable service and clear communication.
They also offer friendly credit options and emergency top-ups, ideal for households managing energy spend carefully.
What You’ll Get:
- No exit fees – switch whenever you like
- Freedom to top up at PayPoint or Post Office
- Friendly and emergency credit included
- Simple plans with great pricing
- Supports the Warm Home Discount
For users looking for no-nonsense, affordable energy with helpful features, E Energy is a reliable go-to. Their local approach and commitment to fairness ensure that even in a complex energy market, you can keep things under control with confidence.
10. Your Co-op Energy
Powered by Octopus Energy’s back-end tech and tariff management, Your Co-op Energy stands out for its ethical approach and community-powered energy model.
Their plans provide 100% zero-carbon electricity and the opportunity to support locally owned renewable energy projects.
This is an ideal option if you want your bills to fuel positive change in local communities, without compromising on price or service quality.
What You’ll Get:
- 100% zero-carbon electricity and gas
- Backed by Octopus Energy’s award-winning platform
- Supports community-owned renewable projects
- Fair pricing with an ethical business model
- Customer-owned co-operative values
If you believe in ethical business, community investment, and cleaner energy, Your Co-op Energy provides a purpose-driven alternative for UK households in 2025. With the strength of Octopus and the spirit of co-operation, you get the best of both worlds.
Conclusion
Finding the cheapest gas and electric supplier in the UK for 2025 doesn’t have to be complicated. With rising energy prices and new supplier options emerging, now is the perfect time to re-evaluate your tariff and consider switching.
Whether you prioritise budget, green energy, rewards, or simplicity, there’s a supplier out there ready to deliver exactly what you need. Each of the top 10 suppliers we’ve reviewed offers something different, but all focus on value, service, and flexibility.
By switching today, you could start saving instantly, and with many providers offering no exit fees, the risk is low while the potential reward is high. You’re just a few clicks away from lower bills, greener energy, and better control over your home utilities.
FAQs
What is the cheapest gas and electricity supplier right now in the UK?
Outfox the Market and E Energy are among the cheapest suppliers offering rates below the UK price cap in 2025.
Can I switch suppliers without paying exit fees?
Yes, most suppliers like 100Green, E Energy, and Sainsbury’s Energy have removed exit fees to make switching easier.
What is a dual fuel tariff?
A dual fuel tariff means you get both your gas and electricity from the same supplier, often at a discounted rate.
Is green energy more expensive?
Not anymore, many suppliers like Octopus Energy and Ecotricity offer green tariffs that are competitively priced.
How long does it take to switch suppliers?
Switching usually takes between 5 to 21 days and won’t interrupt your supply.
What’s the best supplier for PAYG customers?
Utility Warehouse and E Energy both offer great PAYG solutions with smart meter support.
Do I need to tell my current supplier I’m switching?
No, your new supplier will handle the switch, including notifying your current provider and arranging final billing.
