Electricity is one of the most essential services for homes and businesses in London. Choosing the right provider is not just about paying your bills it impacts your monthly expenses, sustainability goals, and even how efficiently your home runs. With numerous electricity suppliers in the market, understanding which companies are the most reliable and cost-effective is crucial.
This blog explores the top 10 electricity companies in London and explains how they set prices, the options they provide, and the factors you should consider when selecting your energy provider.
What Are the Best Electricity Companies in London?
London’s electricity market is competitive, offering residents and businesses a wide range of suppliers. The best companies are usually those that combine affordable tariffs, reliable customer service, and convenient features like smart meters and online account management. Many providers also focus on renewable energy, allowing customers to make environmentally conscious choices.
While some companies are better known for green energy, others stand out for cost-effectiveness or bundled services. The ideal provider for any household depends on its consumption patterns, budget, and sustainability preferences.
Which Are the Top 10 Electricity Companies in London?
1. British Gas – “Powering London for Generations”
British Gas is the UK’s largest energy provider, serving millions of households and businesses nationwide. In London, it is known for its reliability, diverse tariff options, and comprehensive customer service.
British Gas offers everything from standard variable plans to fixed-term contracts, along with services such as boiler care, home repairs, and smart meter installations. The company has recently been enhancing its renewable energy offerings to help customers lower their carbon footprint.
Core Offering
Comprehensive and reliable energy plans for homes and businesses.
Ideal Customer
Users seeking a trusted, long-established provider with multiple plan choices.
Pricing: Standard rates average 30.5p per kWh with a 52p daily standing charge.
Contact Details:
- Website: www.britishgas.co.uk
- Phone: +44 1784 818645
- Address: Venture House, 42-54 London Rd, Staines TW18 4HF, United Kingdom
- Email: customer.service@britishgas.co.uk
Review: ★★★★☆
“British Gas has been reliable for our household, and the smart meter helps track our usage effortlessly.”
2. EDF Energy – “Leading the Low-Carbon Revolution”
EDF Energy is one of the UK’s largest electricity suppliers and a leader in low-carbon solutions. It serves a wide variety of London customers with flexible plans, including fixed and variable tariffs, and is highly recognized for its nuclear and renewable generation capacity.
EDF provides an intuitive mobile app for billing and energy tracking, making it easier for customers to manage consumption. Its dedication to reducing carbon emissions makes it a top choice for eco-conscious consumers.
Key Feature
Robust low-carbon electricity supply with strong sustainability focus.
Top Choice For
Residents seeking environmentally friendly energy and stable pricing.
Pricing: Standard electricity rates from 29.8p per kWh with a 49p daily standing charge.
- Website: www.edfenergy.com
- Phone: 0333 200 5100
- Address: Nova North, 11 Bressenden Pl, London SW1E 5BY, United Kingdom
- Email: socialmedia@edfenergy.com
Review: ★★★★☆
“Switched to EDF for its green plans. Their app is simple and bills are always clear.”
3. E.ON Next – “Your Renewable Energy Partner”
E.ON Next supplies 100% renewable electricity to London homes and businesses. The company emphasizes a digital-first experience, with easy online account management and proactive customer support.
As part of the E.ON Group, it leverages extensive infrastructure and ongoing sustainability initiatives to provide reliable and eco-friendly energy. Its green tariffs make it a popular choice among environmentally aware households.
Highlight
Fully renewable electricity with an emphasis on user-friendly digital services.
Best Matched With
Environmentally conscious households wanting simple account management.
Pricing: Flexible green tariffs starting around 29–30p per kWh.
- Website: www.eonnext.com
- Phone: 0808 501 5200
- Address: Westwood Way, Westwood Business Park, Coventry CV4 8LG
- Email: hi@eonnext.com
Review: ★★★★★
“Everything is digital and easy to manage, and I love knowing all our electricity is renewable.”
4. Octopus Energy – “Innovation Meets Green Power”
Octopus Energy is an award-winning supplier recognized for its 100% renewable electricity and exceptional customer service. Known for its innovative tariffs like Agile and Go, Octopus allows customers to save money by using energy at off-peak times.
The provider also champions transparency, with clear bills and responsive support. It is especially popular with tech-savvy customers looking to integrate smart home technology with their energy plans.
Standout Element
Flexible tariffs with a strong focus on renewable and smart energy.
Suited For
Households seeking innovative pricing and green energy solutions.
Pricing: Standard green tariffs around 28.6p per kWh with 45p daily standing charge.
- Website: octopus.energy
- Phone: +44 808 164 1088
- Address: House, 5th Floor, 164-182 Oxford Street, London
- Email: hello@octopus.energy
Review: ★★★★★
“Octopus made energy fun and affordable. The Agile tariff saved us money by shifting usage to off-peak hours.”
5. Green Energy UK – “100% Green, 100% Independent”
Green Energy UK is a fully independent electricity supplier specializing in 100% renewable energy sourced from wind, solar, and hydro in the UK. Unlike many large suppliers, Green Energy UK focuses exclusively on sustainability, appealing to environmentally conscious customers in London who want to actively support the country’s renewable transition.
The company also stands out with its “TIDE” time-of-use tariff, which encourages users to shift electricity consumption to off-peak periods, reducing both bills and carbon impact. Its smaller scale allows for more personalized customer service and a community-focused approach, making it a favorite among eco-minded households and small businesses.
Exclusive Offering
100% UK-sourced renewable electricity with flexible usage-based tariffs.
Tailored For
Environmentally committed Londoners seeking fully green energy and innovative tariffs.
Pricing: TIDE tariff rates vary between peak and off-peak; standard green tariffs approx. 30p/kWh.
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Website: www.greenenergyuk.com
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Phone: 01920 486 156
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Address: Black Swan Yard, 69-70 High St, Ware SG12 9AD
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Email: hello@100green.com
Review: ★★★★☆
“Knowing all our electricity is green and locally sourced makes Green Energy UK worth the switch. Friendly, responsive team too.”
6. OVO Energy – “Affordable Green Choices”
OVO Energy combines competitive pricing with renewable electricity options, making it popular among cost-conscious yet environmentally aware Londoners. The company offers smart meters, usage-tracking apps, and incentives for reducing carbon emissions. OVO’s Beyond service adds extra sustainability features for users who want to go further in lowering their impact.
Signature Offering
Budget-friendly renewable tariffs with user-friendly account tools.
Recommended For
Families seeking a mix of affordability, reliability, and green energy.
Pricing: Around 29.2p per kWh with a 47p daily standing charge.
- Website: www.ovoenergy.com
- Phone: +44 330 303 5063
- Address: 1 Rivergate Temple Quay Bristol, BS1 6ED
Review: ★★★★☆
“Good balance of price and green energy. The app makes tracking usage very simple.”
7. SSE Energy – “Trusted Energy Solutions”
SSE Energy is known for its reliability and tailored services, particularly for small and medium-sized business clients in London. While domestic services have merged under OVO, SSE still delivers comprehensive energy solutions, including account management, smart metering, and advice on energy efficiency. The brand’s long-standing history ensures customers experience consistent service and dependable electricity supply.
Distinct Edge
Stable energy solutions with business-friendly support options.
Most Suitable For
Businesses and loyal users wanting consistent, traditional energy service.
Pricing: Custom tariffs for businesses; domestic rates around 30p per kWh.
- Website: www.sse.co.uk
- Phone: 0345 070 7373
- Address: 1 Churchill Place, London, E14 5HP
Review: ★★★★☆
“SSE has been a reliable partner for our business energy needs with clear billing and consistent support.”
8. Shell Energy – “Energy Backed by Global Expertise”
Shell Energy brings global experience to London’s electricity market, providing flexible standard and renewable tariffs. Customers can bundle energy with smart home services or broadband, making it convenient for households seeking a unified provider.
Shell Energy is also expanding into electric vehicle charging solutions and green plans to support the city’s transition to sustainable energy.
Unique Advantage
Integration of energy supply with smart home and EV-friendly solutions.
Best Matched For
Households seeking convenience, bundles, and a global brand name.
Pricing: Standard tariffs about 29.5p per kWh; optional green energy upgrades.
- Website: www.shellenergy.co.uk
- Phone: +44 20 7546 5000
- Address: 80 Strand, London WC2R 0ZA, UK
Review: ★★★★☆
“Shell Energy let us combine broadband and power. Easy setup and smooth service so far.”
9. Utility Warehouse – “All-in-One Household Provider”
Utility Warehouse (UW) differentiates itself by combining electricity supply with broadband, mobile, and insurance services under one account. This all-in-one model allows customers to save money through multi-service discounts and enjoy single-bill simplicity.
While UW’s electricity pricing is competitive, its primary appeal is convenience and potential cost reduction for families managing multiple household bills.
Primary Benefit
One-bill simplicity for multiple household utilities.
Ideal For
Families or property owners looking for bundled savings and convenience.
Pricing: Competitive standard tariffs, with multi-service discounts available.
- Website: uw.co.uk
- Phone: +44 333 777 0777
- Address:508 Edgware Rd, London NW9 5AB, United Kingdom
Review: ★★★★☆
“Managing all our bills under one account saves time and money—very practical for a busy household.”
10. Scottish Power – “Driven by Wind and Innovation”
Scottish Power is a leading UK electricity supplier with a strong commitment to renewable energy, especially wind generation. The company operates UK wind farms to supply green energy directly to customers and offers user-friendly mobile apps for managing consumption. Scottish Power’s long heritage, combined with its modern sustainability initiatives, makes it a solid option for eco-conscious Londoners.
Key Strength
Focus on UK-generated renewable wind energy.
Well-Suited To
Eco-focused users wanting a trusted, green electricity provider.
Pricing: Standard tariffs around 30.1p per kWh with 50p daily standing charge.
- Website: www.scottishpower.co.uk
- Phone: 0345 270 0700
- Address: 1 Tudor Street, London, EC4Y 0AH
- Email: contactus@scottishpower.com
Review: ★★★★☆
“We switched to Scottish Power for the renewable energy focus. Smooth service and an easy-to-use app.”
How Do Electricity Companies in London Set Their Prices?
Electricity pricing in London is influenced by several key factors that impact what customers pay per unit of energy.
Wholesale Market Influence
Energy suppliers purchase electricity in the wholesale market. Prices fluctuate daily based on demand, supply availability, and international fuel costs. This volatility often reflects in variable customer tariffs.
Government Policies and Levies
The UK government adds levies and charges to promote renewable energy and maintain the national grid. These charges can affect overall electricity pricing.
Distribution and Operational Costs
Electricity suppliers pay for using the National Grid and local distribution networks. Operational expenses such as customer support, billing systems, and maintenance also factor into the final tariff.
| Electricity Company | Standard Tariff (p/kWh) | Standing Charge (p/day) | Renewable Option |
| British Gas | 30.5 | 52 | Yes |
| EDF Energy | 29.8 | 49 | Yes |
| Octopus Energy | 28.6 | 45 | 100% |
| Ovo Energy | 29.2 | 47 | Yes |
| Scottish Power | 30.1 | 50 | Yes |
Note: Rates are indicative and may vary based on location and contract type.
Which London Electricity Companies Offer Renewable Energy Options?
The shift towards renewable energy is a major trend in London’s electricity market. Many suppliers now prioritize low-carbon and sustainable electricity plans.
Fully Renewable Providers
Octopus Energy and E.ON Next supply 100% renewable electricity, sourced from wind, solar, and hydropower. These providers appeal to eco-conscious households seeking to reduce their carbon footprint.
Low-Carbon and Hybrid Options
EDF Energy and Scottish Power combine renewable sources with low-carbon nuclear generation, providing reliable electricity with a smaller environmental impact.
Optional Green Add-ons
Shell Energy and Ovo Energy allow customers to add renewable options to their plans. This flexibility lets households balance cost savings with environmental goals.
How Can Customers Choose the Right Electricity Company in London?
Choosing the right provider requires evaluating more than just price.
Tariff and Contract Flexibility
Fixed-rate plans offer stability, while variable tariffs may provide savings when market prices drop. Households should select a plan that matches their risk preference.
Customer Service and Reputation
Companies with efficient billing and responsive support improve the overall experience. Octopus Energy and Ovo Energy frequently rank highest in service ratings.
Technology and Tools
Smart meters and mobile apps allow customers to track energy use, plan savings, and spot unusual consumption patterns, which can reduce monthly costs over time.
Why Should London Residents Compare Electricity Companies Regularly?
The energy market changes frequently, and regular comparison helps customers avoid overpaying.
Cost Savings
Switching providers can save the average London household £200–£300 annually. Introductory offers often make switching more attractive.
Access to Greener Energy
New tariffs frequently include enhanced renewable options, helping customers meet sustainability goals without higher costs.
Conclusion
London offers a wide selection of electricity companies, each with unique benefits for cost-conscious, tech-savvy, or eco-friendly customers. Comparing tariffs, renewable options, and customer service is the key to finding the right provider. Regular reviews and switching can reduce energy bills and support a sustainable future.
FAQs About Electricity Companies in London
What is the average electricity cost in London?
Rates generally range from 28p to 31p per kWh, with standing charges between 45p and 52p per day.
Can I switch electricity providers easily in London?
Yes. Ofgem regulations ensure switching is free and usually completed within five working days.
Which company has the best customer service?
Octopus Energy and Ovo Energy often receive top ratings for service and responsiveness.
How do I know if an electricity company is reliable?
Check Ofgem accreditation, customer reviews, and the company’s track record in the UK market.
Are there electricity companies that focus only on renewable energy?
Yes. Octopus Energy and Good Energy focus on 100% renewable electricity plans.
How often can I switch electricity providers?
You can switch anytime, though exit fees may apply for fixed-term contracts.
Do London electricity companies offer smart meter options?
Yes, most providers now install smart meters free of charge to help customers monitor usage.