I checked several fuse energy reviews and spent a good chunk of last month digging into Fuse Energy the way I would if a friend asked me whether to switch.
What I found is a supplier that talks a big game and mostly backs it up, though not everywhere. Here is everything I learned, laid out plainly.
Fuse Energy Reviews & Ratings
Looking closely at Fuse Energy reviews on Trustpilot, Fuse holds a 4.8 score from thousands of ratings, and most reviewers mention customer support and real savings compared with a standard variable tariff.
Which? gave Fuse a Total score of 66%, made up of a Customer survey score of 76% and a Which? Assessment score of 56%, based on a customer survey of 112 customers run in September-October 2025 plus a request for information and desk research carried out in September-November 2025.
Was this the first year? could include Fuse in its rankings, and the Which? verdict on Fuse landed as follows: Pros: strong customer ratings and appreciation for its eco-focus, and Cons: some disappointing scores in the behind-the-scenes practices side of the supplier assessment.
In the annual satisfaction survey, Fuse came joint 5th out of 17 energy companies rated by 11,945 members of the public, and with over 7,000 reviews on record, the general mood reads as moderately happy rather than thrilled.
The customer review picture was mixed: shoppers gave three stars for overall customer service, ease of contacting the team, and value for money, but only two stars for customer communications and how well Fuse handled price changes.
One happy customer praised fair pricing and transparent billing through the intuitive app and called it an eco-focused service worth the switch, while other feedback described communication methods as limited, especially the lack of a telephone call option.
Company Overview
Fuse Energy is a UK energy supplier that former executives from the banking app Revolut founded, and that background shows in how the company markets itself as a challenger brand.
It built renewable energy assets worth 18MW across solar sites and wind sites, and it leans on that low-carbon power to support its dual fuel tariffs for regular customers.
I noticed the marketing quickly, because Fuse leans hard on low-price claims such as cheapest fixed tariffs and market-beating off-peak rates on its EV tariffs, and that tone stands out next to major suppliers.
The company reinvests its profits into renewable energy projects, and it also puts money into renewable projects further afield, not only around the UK.
Fuse also runs solar panel design and installation for businesses and commercial properties that want cleaner power on site. Fuse started as an app-only service, so you had to sign up and manage account details through the app, though online access came later.
By June 2026, Fuse told us its variable rates would now track the energy price cap instead of staying cheaper than it, so the old claim that its variable tariff always beats Ofgem’s price cap no longer holds.
Customer Service & Contact
You can reach Fuse through email queries or through Chat support in its mobile app, and its customer service team replies to those email queries.
Fuse earned a satisfactory three stars for customer service, while no supplier hit the full five stars; only the Which? Recommended Providers Octopus Energy, 100Green, Sainsbury’s Energy, and E (Gas & Electricity) reached four stars.
Tariffs & Pricing
Fuse offers four tariff types with different contract lengths, including 13-month and 15-month options, and among them are three fixed dual fuel tariffs where unit rates and standing charges stay locked for the contract duration.
It also runs one standard variable tariff, known more broadly as the Standard variable tariff, where prices move with the energy price cap level.
Fuse markets some of the cheapest deals and lowest prices around, tied to its green energy mission of offering 100% green electricity as standard, though the UK price cap still shapes how much you’ll pay in the end.
For anyone who wants price certainty, the Fixed tariffs deliver that, but watch out for exit fees: as of 2025, these sat at £50 if you leave early.
Compared with major UK suppliers, Fuse’s pricing structure looks competitive on paper, but the details of each contract length option matter more than the headline number.
Renewable Energy & Sustainability
Fuse generates renewable electricity from both wind power generation sites and solar power generation sites, and it has added new generators within the past year.
In its sustainability assessment, dated March 2026, Fuse scored 55% against a range that ran from 0% to 85%, based on information supplied by the company itself.
It installs solar PV, battery storage, heat pumps, insulation, and EV chargers for households as part of a wider push toward low-carbon energy, and it offers two time-of-use tariffs, one aimed squarely at EV drivers.
On the business side, Fuse runs commercial solar panel installation covering both roof installation and land installation, and it does not act as a middleman: it handles bespoke system designs, sorts out grid connection applications, and then constructs the system work itself rather than passing you to another installer.
Fuse also says it reinvests profits into wind and solar projects around the world, not just at home.
Fuse Energy Common Issues And Complaints
Fuse customers report common issues such as refund problems, which affected 9% of people, along with estimated meter readings given instead of actual readings, incorrect credit balance entries, and broken in-home displays or monitors, each cited by roughly 8% of respondents.
Over the previous year, 16% of customers said they raised a formal complaint, a higher proportion than at other suppliers, though most called it easy to complain once they started the process, and these issues rarely dragged on for long.
Fuse Energy Supplier Assessment
Which? looked at five aspects of business practices: complaints, contacting supplier channels, help for customers in vulnerable situations, smart meters, and switching. Fuse came 13th out of 17 providers, with a supplier score of 56% in this survey.
It did well on the switching assessment, earning four out of five, but scored only six out of 12 for contacting supplier, mainly because it lacks phone support; you’re limited to live chat and email, which are staffed 24/7, even though self-help on the website stays fairly thin.
Fuse also picked up just three out of 10 for support needed by people in vulnerable situations, since it remains a new supplier that is growing rapidly and has not caught up on every front, including sign-up to Energy UK’s Vulnerability Commitment.
Other gaps show up too: material in other languages is limited, web accessibility needs work, and progress against 2024 targets for smart mode and prepayment meters trails some of these assessments for rival firms, alongside its usual procedures.
Can You Join Fuse Energy With A Prepayment Meter?
Not usually. Fuse’s main payment option is variable direct debit, so the amount debited each monthly cycle reflects the energy used the previous month.
Fuse also allows fixed direct debit, where you pay the same amount every year, averaged out across your bills, plus open banking as another route.
Smart Home Features and Control Options
Fuse’s smart home system is one way people finance 100% of this work: it fits smart LED light fixtures that use up to 90% less power than old light bulbs, and it swaps a standard thermostat for a self-learning thermostat that adjusts based on doors and windows.
Step out, and the lights turn off through automatic turn-off logic when you’re not home, all controlled through home control and smartphone control from wherever you are.
Overview of the PACE Financing Program
Here’s an angle most reviews skip. In parts of California, a government program called the Property Assessed Clean Energy Program, or PACE program, lets a homeowner upgrade home systems and swap in energy-efficient devices with no money down, financing qualifying energy projects and letting you pay back the cost through property taxes over 15 years.
The loan is not tied personally to you, so if you move, the next homeowner simply takes it over, which helps reduce greenhouse emissions and energy consumption without hurting your credit score or employment history.
Professional Installation, PACE Management, and Long-Term Savings
According to recent Fuse Energy reviews, licensed technicians and professional technicians handle the installation step, usually in less than two hours, and Fuse deals with the red tape of the PACE program, so you avoid the hassle yourself; contact Fuse, and they can qualify your home in a few minutes.
Fuse says the smart home system can save money on your energy bill, roughly between $4,000 and $8,000 over 15 years.
While it works to increase home value and property value and improve environmental outcomes, with upfront costs that stay low, close to no hassle, and energy-efficient results throughout, thanks to an advanced system that coordinates the whole house and helps you save energy and cut your utility bill.
FAQs
Are Fuse Energy suppliers any good?
Fuse Energy holds a 4.8 TrustPilot score and a 66% Which? rating, so most customers rate it decently, though customer communications could improve.
Why is Fuse Energy so cheap?
Fuse Energy pushes low-price claims like cheapest fixed tariffs and market-beating rates as part of its challenger brand strategy to win customers fast.
Is Fuse better than Octopus?
Octopus Energy scored four stars for customer service versus Fuse’s three stars, so Octopus edges ahead on support, though Fuse competes well on pricing.
Who owns Fuse Energy UK?
Fuse Energy was founded by former executives of the banking app Revolut, giving it a fintech-driven approach to the UK energy supplier space.
How long has Fuse Energy been around?
Fuse Energy launched in 2023, making it one of the first new energy suppliers to enter the market after the energy crisis.