Octopus Energy vs Fuse Energy (2025)

Quick Overview

The main difference between Fuse Energy and Octopus Energy comes down to their approach. Octopus is a big, well-known supplier with a huge variety of tariffs, including clever plans for people with electric cars (EVs) or solar panels. Fuse Energy, on the other hand, is a new company focused on being simple and cheap. It launched with just one, very competitive variable tariff for people who want to ‘set it and forget it’.

In 2025, Fuse aims to be one of the cheapest and simplest options available. Octopus offers more choice and can save you a lot of money if you have specific needs like an EV.

How They Compare in 30 Seconds:

• Customer Service: Octopus wins. It has award-winning service and, crucially, offers phone support, which Fuse does not.

• Price: A draw. Octopus offer the cheaper variable tariff, whereas Fuse Energy offer the cheaper fixed tariff.

• Tariff Choice: Octopus wins. It has a massive range of tariffs, while Fuse focuses on just one or two simple options.

• Green Energy: Octopus wins. It guarantees 100% renewable electricity and invests heavily in building new wind and solar farms.

• Customer Reviews: Octopus wins. It has a proven track record of keeping millions of customers happy on a massive scale.

• App & Website: Octopus wins (just). Both apps are excellent, but Octopus has more features for its wider range of smart tariffs.

Who is Octopus Energy?

Launched in 2016, Octopus Energy set out to make energy smarter, greener, and cheaper using technology to challenge the old ‘Big Six’ suppliers. Their focus on innovation and customers has made them grow incredibly fast.

By the end of 2024, Octopus became the UK’s biggest home energy supplier, overtaking British Gas. They now supply over 7.3 million UK homes. This growth came from attracting new customers and taking over the customers of failed suppliers like Avro Energy, Bulb, and Shell Energy.

While this rapid growth is a huge success, it has caused some growing pains. Moving millions of new customers over has led to billing problems and slower customer service for some, meaning that while their official ratings are fantastic, not everyone has had a perfect experience.

What makes Octopus different?

• Technology – Kraken: This is their own powerful software that runs everything efficiently. It automates billing and customer service, allowing them to create new tariffs quickly and keep costs down. It’s so good that other big suppliers like E.ON and EDF pay to use it.
• Green Energy: Octopus provides 100% renewable electricity on all its tariffs. They don’t just buy certificates to prove this; they actively invest in building new green energy sources. Their investment arm manages over £6 billion worth of wind and solar projects.

Awards and Trust

Octopus is highly trusted and has won many awards.

• Which? Recommended Provider: They’ve won this award for eight years in a row, which no other energy company has managed.
• Trustpilot: They have an ‘Excellent’ rating of 4.8 out of 5 from over 660,000 reviews, showing they keep customers happy on a massive scale.
• Citizens Advice: They are consistently one of the top-rated suppliers in the official customer service rankings.

Who is Fuse Energy?

Fuse Energy is a new, app-based supplier started in 2022 by former bosses from the money app Revolut. Their mission is to do for energy what Revolut did for banking: use smart tech and a lean setup to cut costs and offer cheaper prices. They want to be simpler and more efficient than anyone else.

The Revolut Playbook

Fuse is copying the strategy that made Revolut successful. They use an app to deliver a smooth customer experience and have cut out expensive things like big call centres.

Their Secret Weapon: The Kraken Connection

A big advantage for Fuse is that they use Octopus Energy’s Kraken software. By licensing the same top-notch system as the market leader, they avoided years of difficult and expensive tech development. This lets them focus on getting customers and keeping prices low.

Simplicity is Key

Fuse’s main selling point is being incredibly simple. They started with just one super-cheap variable tariff to avoid confusing customers. While they now have a few more options, their goal remains the same: to offer simple, clear, and low-cost energy.

Octopus vs Fuse Energy: Is Fuse Cheaper?

To compare prices fairly, we got quotes for a typical UK household.

How we compared:

• Fuel: Gas and Electricity (Dual Fuel)
• Usage: Ofgem’s official average use (2,700 kWh of electricity and 11,500 kWh of gas per year).
• Location: A postcode in the Midlands.
• Date: August 2025

Fuse Energy Quote

Fuse’s goal is always to be cheaper than the price cap.

Octopus Energy Quote

Octopus has more tariffs with different prices.

*The Tracker price is an estimate based on recent averages and can change daily.

For a standard variable tariff, Octopus Energy is the cheaper option. Its ‘Flexible Octopus’ tariff is considerably less expensive than Fuse’s equivalent.

For the security of a fixed-rate deal, Fuse Energy offers better value. Its 13-month fixed tariff is currently cheaper than Octopus’s 12-month offer.

For the lowest possible price, Octopus Energy’s ‘Tracker’ tariff is the winner. For customers with a smart meter, this tariff offers the potential for the biggest savings, but you must be comfortable with your price changing daily.

Octopus or Fuse: What’s the Difference in Tariff Options?

This is where the two suppliers are most different. It’s a classic case of lots of choice vs. keeping it simple.

Fuse Energy Tariffs

Fuse is all about simplicity. Their main offering are two tariffs designed to be cheap and easy. It’s a ‘set and forget’ option that removes the hassle of choosing between many options.

Octopus Energy Tariffs

Octopus has a huge range of tariffs for almost everyone:

• Flexible Octopus: Their standard variable tariff.
• Octopus 12M Fixed: Locks in your rates for a year, great for budgeting.
• Tracker Tariff: A smart tariff where prices change daily with the wholesale market.
• EV Tariffs (Intelligent Octopus & Octopus Go): Special plans for electric car owners with super cheap overnight electricity (e.g., 7.5p per kWh) for home charging.
• Export Tariffs (Octopus Flux): For homes with solar panels and batteries, letting you sell spare energy back to the grid for a good price.

Who is better for EV owners?

Octopus Energy is the clear winner. Its ‘Intelligent Octopus’ and ‘Octopus Go’ tariffs are market-leading, automatically charging your car when electricity is cheapest. Fuse has an EV tariff, but it’s new and doesn’t have the same smart features.

Who is better for smart meter users wanting to save?

Again, Octopus Energy wins. Tariffs like ‘Tracker’ and ‘Agile’ let you shift your energy use (e.g., running the dishwasher) to cheaper times, cutting your bills. Fuse offers a low price overall, but doesn’t have tariffs that reward you for changing when you use energy.

Who Offers the Greenest Energy?

This is an interesting one, as they have very different ideas about being “green”.

Octopus Energy

Octopus has a two-part green strategy.

1. 100% Renewable Electricity: All their tariffs are backed by certificates (called REGOs) to prove that for every unit of electricity you use, a green unit was produced.
2. Direct Investment: More importantly, they invest billions directly into building new wind and solar farms. So your bill doesn’t just buy a certificate; it helps fund new green energy projects.

Fuse Energy

Fuse does things differently.

1. Reinvestment Over Certificates: Fuse owns its own solar and wind farms. However, they openly sell the green REGO certificates they produce.
2. Fighting “Greenwashing”: They argue that just buying certificates can be “greenwashing” (pretending to be greener than you are). Instead, they reinvest every penny of profit from selling those certificates into building more renewable energy sites. This means their official fuel mix isn’t 100% renewable on paper, but your money is directly funding new green projects.

Octopus or Fuse Energy: Who Has Better Customer Reviews?

We used Trustpilot to compare what customers think.

• Octopus Energy: An ‘Excellent’ 4.8/5 from a massive 250,000+ reviews.
• Fuse Energy: Also ‘Excellent’ with around 4.6/5, but from a much smaller number of reviews (just over 1,000).

Analysis

While Fuse has made a brilliant start, Octopus’s achievement is more impressive. Maintaining a 4.8-star rating across hundreds of thousands of reviews over many years is incredibly difficult and shows consistent quality at a huge scale.

Octopus reviews often praise their helpful staff and clear communication. The few negative reviews tend to be about billing issues caused by their rapid growth. Fuse reviews love the simple app, low prices, and easy switching process. The main complaint is the lack of phone support, which is a deliberate part of their low-cost model.

Who Has the Better Website and App?

Because both companies use the same powerful Kraken technology, their apps and websites are both fast, reliable, and accurate for core tasks like checking bills and submitting readings.

Octopus App

• Rating: 4.8/5 on the Apple App Store from over 167,000 ratings.
• Features: It’s a complete app that lets you manage smart tariffs, control EV charging to save money, and track rewards from energy-saving schemes.

Fuse Energy App

• Rating: 4.7/5 on the Apple App Store from over 310 ratings.
• Features: The app is central to Fuse’s service. Users love its clean design and super-fast in-app chat support.

Octopus vs Fuse: Who Has Better Customer Service?

Octopus Service

Octopus is famous for its great customer service.

• Official Data: The latest Citizens Advice report shows an average call wait time of just 1 minute and 41 seconds.
• Reputation: They have won countless awards for their service and offer support through phone, email, and social media.

Fuse Service

Fuse’s model is digital-only to keep costs low.

• Model: Support is mainly through in-app chat and email, available 24/7. There is no call centre.
• Reviews: Customers rave about the service, saying the in-app chat is “lightning-fast,” with replies from a real person often in under two minutes.

Octopus vs Fuse: Summary of Main Differences

Is Fuse Energy Better Than Octopus Energy?

Unfortunately, there’s no single right answer; the “better” supplier depends entirely on you.

Choose Fuse Energy if…

You want the simplest and cheapest option for standard energy use. You’re happy managing everything through an app and don’t need to call a helpline. You want a ‘set and forget’ tariff from a small, modern company.

Choose Octopus Energy if…

You want more choice. You have an electric car or solar panels and want a special tariff to save money. You prefer the security of a large, award-winning supplier with phone support.

Overall Winner

For most people, Octopus Energy comes out on top. Its huge range of tariffs, amazing customer service record, and innovative products make it the best all-round choice for the widest range of UK homes.

However, Fuse Energy is a fantastic new competitor. For anyone who prizes low cost and simplicity above all else, it’s a clear winner and a great new choice on the market.

Frequently Asked Questions (FAQs)