The energy landscape in London is a bustling market, filled with numerous gas and electric companies offering a wide variety of services to meet the diverse needs of both residential and commercial customers.
With the rising importance of sustainable living, the growing demand for renewable energy, and the government’s push toward carbon neutrality, consumers today are not just looking for the cheapest provider, but one that aligns with their environmental values and service expectations.
This blog presents a detailed guide to the top 10 gas and electric companies operating in London, offering insights into their services, green energy initiatives, and customer satisfaction levels. Whether you are switching providers or moving into a new home, this information will help you make a well-informed choice.
What Should You Look for in Gas and Electric Companies in London?
When faced with a multitude of options, choosing the right gas and electric company requires careful consideration of several key factors.
Pricing and Tariff Options
Energy costs can constitute a significant part of household or business expenses. It is crucial to evaluate whether a provider offers flexible tariff options such as fixed-rate plans that shield you from market fluctuations, or variable-rate plans that may benefit those willing to ride market highs and lows.
Many companies now also offer dual-fuel deals, combining gas and electricity services under one contract, which can be more economical and convenient.
Customer Service Quality
Good customer service is indispensable. Quick, reliable customer service is crucial when dealing with service interruptions or resolving billing concerns, ensuring peace of mind for customers. Companies with dedicated helplines, online chat support, and quick complaint resolution tend to score higher in customer satisfaction.
Sustainability and Green Initiatives
In a city as environmentally conscious as London, a company’s commitment to green energy is a substantial deciding factor. Many Londoners prefer providers that offer 100% renewable electricity, carbon offsetting for gas, and other initiatives like supporting local renewable energy projects.
Billing Transparency and Technology
Today’s customers expect complete transparency in billing with no hidden charges. Moreover, the integration of smart meters and mobile apps that allow real-time energy monitoring is becoming a standard feature offered by top providers.
Why is Choosing the Right Energy Supplier in London Important?
Your choice of energy supplier not only affects your utility bills but also impacts the broader environmental and economic landscape.
Economic Benefits
Choosing a cost-effective energy supplier can lead to significant savings, especially over a long-term contract. This is particularly important in a city where living costs are already high.
Environmental Impact
Suppliers offering renewable energy contribute to lowering carbon emissions and supporting the UK’s commitment to achieving net-zero targets. By choosing these companies, customers become active participants in combating climate change.
Long-Term Reliability
An energy supplier’s stability and reliability ensure fewer service interruptions and better overall management of your energy needs. Trustworthy companies often invest heavily in infrastructure, ensuring consistent delivery even during peak times or emergencies.
Which Are the Top 10 Gas and Electric Companies in London?
London’s vibrant and ever-expanding urban landscape relies heavily on the uninterrupted supply of gas and electricity. With households, businesses, and new developments demanding efficient, cost-effective, and eco-friendly energy, the choice of supplier is critical.
Consumers are looking for more than just competitive prices reliability, green initiatives, and excellent customer service now drive decision-making. This curated list highlights the top 10 gas and electric companies in London, helping you find the best provider to match your energy needs and environmental values.
1. British Gas – “Powering British Homes for Over 200 Years”
As one of the UK’s oldest energy suppliers, British Gas has built a trusted reputation for reliability, offering a broad range of energy services from supply to home protection.
Core Focus
Provides integrated services, including energy supply, boiler maintenance, and smart home solutions.
Ideal For
Customers looking for a full-service provider with extensive national coverage.
Pricing
Standard variable tariffs; renewable energy options at an added cost.
- Website: britishgas.co.uk
- Phone: 0113 298 0900
- Address: 188 Great Titchfield St., London W1W 5BG
Review:
★★★★★ “Reliable and trustworthy service; great for families who need all-in-one home solutions.”
2. EDF Energy – “Low-Carbon Energy Solutions for Londoners”
EDF Energy champions sustainability with a focus on low-carbon power and a wide range of tariffs designed to meet different consumption patterns.
Key Offering
Strong emphasis on nuclear and renewable energy, offering diverse fixed and variable rate plans.
Most Suitable For
Eco-conscious consumers seeking a reputable low-carbon provider.
Pricing
Competitive fixed-rate tariffs; Green Tariffs available.
- Website: edfenergy.com
- Phone: 0800 111 999
- Address: Nova North, 11 Bressenden Pl, London SW1E 5BY
- Email: hello@edfenergy.com
Review:
★★★★☆ “Reliable service with a real commitment to clean energy, though their app could be better.”
3. Octopus Energy – “Fair, Renewable, and Forward-Thinking”
Octopus Energy stands out for transparency, renewable commitment, and award-winning customer service, reshaping how Londoners engage with their energy provider.
Highlight Feature
Provides 100% renewable electricity and flexible, technology-driven account management.
Perfect For
Tech-savvy users who value green energy and excellent service.
Pricing
Flexible Go and Agile tariffs; competitive green rates.
- Website: octopus.energy
- Phone: +44 808 164 1088
- Address: 5th Floor, United Kingdom House, 164-182 Oxford St, London W1D 1NN
- Email: hello@octopus.energy
Review:
★★★★★ “Best customer service experience I’ve had — clear billing and green energy at great prices.”
4. E.ON Next – “Renewable Energy Made Easy”
E.ON Next delivers consistent energy services powered entirely by renewables, prioritising simplicity and an outstanding customer experience.
Standout Attribute
Offers green electricity as standard with dynamic customer support.
Most Recommended For
Environmentally minded individuals seeking simple, green options.
Pricing
Fixed and flexible plans, green at no extra cost.
- Website: eonnext.com
- Address: Westwood Way Business Park, Coventry, United Kingdom
- Email: hi@eonnext.com
Review:
★★★★☆ “Efficient switching and clear pricing — their green plan is a no-brainer.”
5. Utility Warehouse – “All Your Utilities, One Bill”
Utility Warehouse simplifies household management by bundling gas, electricity, broadband, and mobile services into a single monthly bill, offering competitive discounts for customers who opt for multiple services.
Key Strength
Provides multi-service bundles, allowing customers to combine energy with other essential utilities under one streamlined account.
Best Matched For
Households looking for convenience and potential savings by consolidating their utility services.
Pricing
Discounted rates for multi-service customers; competitive single-service energy tariffs.
Contact Details:
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Website: uw.co.uk
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Phone: +44 333 777 0777
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Address: 508 Edgware Rd, London NW9 5AB
Review:
★★★★☆ “Switching to one bill for all services was a game-changer easy to manage and good savings!”
6. SSE Energy – “Trusted Service, Now Greener”
SSE combines decades of trusted service with new green initiatives under its new parent company, OVO Energy.
Distinguished Offer
Solid customer support paired with an increasing focus on renewable energy.
Ideal Candidate For
Households valuing reliability and gradual transition to greener energy.
Pricing
Competitive fixed deals with optional green upgrades.
- Website: www.sseenergysolutions.co.uk
- Phone: 0800 111 999
- Address: 111 Buckingham Palace Road, London, SW1W 0SR
- Email: customer.service@sse.com
Review:
★★★☆☆ “Steady and dependable, but newer green competitors are more progressive.”
7. Shell Energy – “Energy Innovation Backed by Global Power”
Shell Energy brings cutting-edge smart home solutions combined with 100% renewable electricity.
Core Edge:
Integrated energy solutions including smart home tech and EV charging.
Targeted For:
Homeowners looking for innovation and green energy under a trusted name.
Pricing:
Renewable plans; smart home bundles available.
- Website: shellenergy.co.uk
- Phone: 020 7546 5000
- Address: 80 Strand, London WC2R 0ZA
Review:
★★★★☆ “ Their smart technology offerings enhance home connectivity, making it easier for users to control and monitor their energy consumption.”
8. OVO Energy – “Green Power, Smarter Living”
OVO Energy is praised for its sustainability commitments and smart, user-friendly energy management tools.
Unique Point
Strong environmental ethos combined with excellent customer-centric technology.
Designed For
Conscious consumers who appreciate smart solutions and loyalty incentives.
Pricing
Multiple tariffs; green energy included at no extra cost.
- Website: ovoenergy.com
- Phone: +44 330 303 5063
- Address: 69 Notting Hill Gate, London W11 3JS
- Email: hello@ovoenergy.com
Review:
★★★★★ “A brilliant blend of green energy and technology — love the rewards program!”
9. Good Energy – “Pioneers of 100% Renewable Power”
Good Energy has a long-standing reputation for offering 100% renewable energy directly sourced from UK wind and solar farms.
Main Advantage
Direct purchase of renewable power from local producers ensures authenticity.
Best Pick For
Those seeking authentic, traceable green energy from a long-standing pioneer.
Pricing
Higher premium for fully traceable green energy.
- Website: goodenergy.co.uk
- Phone: +44 345 034 2400
- Address: Monkton Park Offices, Monkton Hill, Chippenham SN15 1GH, United Kingdom
- Email: hello@goodenergy.co.uk
Review:
★★★★☆ “Top-notch green credentials — you really feel you’re making a difference.”
10. Ecotricity – “Green Energy with Purpose”
Ecotricity stands out by reinvesting profits into green innovation, including green gas and electric vehicle charging networks.
Distinctive Edge
Leading investments in future renewable technology beyond traditional supply.
Most Suitable For
Consumers who want to support the development of new green technologies.
Pricing
Premium green tariffs; profits reinvested into green initiatives.
- Website: ecotricity.co.uk
- Phone: +44 345 555 7100
- Address: 9 Millbank, London, SW1P 3GE
- Email: home@ecotricity.co.uk
Review:
★★★★☆ “If you care about the future of green tech, this is the supplier to go with.”
How Do Gas and Electric Companies in London Ensure Sustainability?
Energy providers in London are increasingly prioritising sustainability, responding to consumer demand and government regulations.
Renewable Energy Integration
Companies like Octopus Energy and Good Energy supply 100% of their electricity from renewable sources, mainly wind and solar. This shift reduces reliance on fossil fuels and supports a cleaner grid.
Carbon Offset Programs
Many suppliers now offer carbon offset programs for their gas services. For example, Bulb Energy offsets gas usage by investing in projects like rainforest preservation and clean water initiatives.
Smart Technologies
The use of smart meters enables customers to track their energy consumption in real-time, encouraging reduced energy usage and greater efficiency. Companies like E.ON Next actively promote the installation of these meters, helping customers lower their carbon footprint.
What Are the Average Costs of Gas and Electricity Services in London?
The price you pay for gas and electricity depends on your provider, how much energy you use, and the type of tariff you select. Below is a detailed comparison table of the average costs offered by the top companies:
| Company | Electricity (p/kWh) | Gas (p/kWh) | Standing Charge (p/day) | Green Energy (%) | Customer Rating (out of 5) |
| British Gas | 27.2 | 7.1 | 29.3 | 40% | 3.8 |
| EDF Energy | 26.8 | 7.0 | 28.5 | 60% | 4.0 |
| Octopus Energy | 25.9 | 6.9 | 25.0 | 100% | 4.7 |
| E.ON Next | 26.5 | 7.0 | 26.8 | 100% | 4.2 |
| Bulb Energy | 25.7 | 6.8 | 24.9 | 100% | 4.5 |
| SSE Energy | 27.0 | 7.2 | 30.0 | 30% | 3.9 |
| Shell Energy | 26.9 | 7.1 | 28.2 | 60% | 4.1 |
| OVO Energy | 26.3 | 7.0 | 27.0 | 100% | 4.4 |
| Good Energy | 27.5 | 7.3 | 30.5 | 100% | 4.0 |
| Ecotricity | 28.0 | 7.4 | 31.0 | 100% | 4.2 |
These are average figures based on standard tariffs and may vary depending on consumption and location.
How to Compare and Switch Gas and Electric Companies Easily?
Switching energy providers in London is designed to be hassle-free.
Steps to Switch:
- Evaluate Needs: Identify whether you prioritise price, green energy, or customer service.
- Compare Tariffs: Use trusted comparison websites to find the best deals tailored to your consumption habits.
- Check Contract Terms: Look for details like exit fees and the duration of the contract.
- Apply Online: Most providers have streamlined online switching processes.
- Switch Confirmation: The new provider will manage the entire switch, typically completing it within 21 days.
| Feature | Octopus Energy | British Gas | EDF Energy | Bulb Energy |
| Green Energy (%) | 100% | 40% | 60% | 100% |
| App/Online Account | Yes | Yes | Yes | Yes |
| Fixed/Variable Tariff | Both | Both | Both | Variable |
| Smart Meter Integration | Yes | Yes | Yes | Yes |
| Customer Service Rating | 4.7 | 3.8 | 4.0 | 4.5 |
What Future Trends Are Shaping London’s Energy Market?
The London energy sector is rapidly evolving, with several key trends shaping its future.
Renewable Energy Expansion
Investments in wind, solar, and hydroelectric power are increasing, driven by governmental incentives and public demand for cleaner energy.
Smart Grid Technology
Smart grids enable better energy distribution and storage, helping to reduce losses and efficiently integrate renewable energy sources.
Electrification and Decarbonisation
Electrification of transport and heating systems, combined with the move toward decarbonisation, is reshaping energy demand and infrastructure planning in London.
Conclusion
Choosing the right gas and electric company in London is pivotal for ensuring reliable service, reducing costs, and contributing to environmental sustainability.
With a diverse range of options like British Gas, Octopus Energy, and Bulb Energy offering innovative and green solutions, consumers have more power than ever to select a provider that aligns with their values and needs. As the energy landscape continues to evolve, staying informed will remain key to making the best energy choices.
FAQs About Gas and Electric Companies in London
What is the best gas and electric company in London for customer service?
Octopus Energy consistently ranks highest for customer satisfaction due to their proactive service and transparent practices.
How can you save money on gas and electricity in London?
Switching to a cheaper tariff, using energy-efficient appliances, and adopting smart meters can significantly reduce bills.
Are there any green energy companies in London?
Absolutely, companies such as Bulb, Octopus Energy, Good Energy, and Ecotricity are committed to offering electricity sourced entirely from renewable resources.
What factors affect gas and electricity prices in London?
Prices depend on wholesale market rates, government taxes, infrastructure costs, and seasonal demand.
How often can you switch energy providers in London?
You can switch anytime, but it’s advisable to review contract terms to avoid exit fees.
Are gas and electric companies regulated in London?
Yes, Ofgem, the UK’s energy regulator, ensures fair pricing and practices across all energy companies.
Can businesses get special energy rates in London?
Businesses can access tailored tariffs that offer bulk discounts and energy efficiency consultations.