So Energy Review (September 2026)
Overview
So Energy offers highly rated apps and strong Trustpilot reviews, but weak official scores from Citizens Advice make it a mixed option for households.
Who are So Energy?
So Energy was set up in 2015. In 2021, Ireland's Electricity Supply Board (ESB) bought a majority share in the business, and the two companies combined their UK household customer bases. Today, So Energy is one of the UK's smaller household energy suppliers.
What sets the company apart is that it lets customers on its fixed-rate tariffs vote on where it gets its renewable electricity. Customers can choose between wind, solar, hydro, and biomass generators, and the supplier uses these votes to decide which renewable sources to support. It also offers a range of home energy products, such as solar panels, home batteries, electric vehicle chargers, and boiler cover.
Products & services
- Gas and electricity
- standard and specialist household tariffs
- Solar panels
- home solar installations
- Home batteries
- energy storage systems
- Electric vehicle chargers
- home EV charging points
- Boiler cover
- maintenance and repair plans
Awards & recognition
- ✓Special Commendation for Best Overall Improvement — Uswitch Energy Awards 2026
- ✓Flex Accreditation — Uswitch 2026
Use our referral link, and we'll both get £50 credit once your switch is complete.
Existing customer? Find out how you can benefit too. T&Cs apply (only one switching offer per household)
Prices
These are the tariffs we have pricing for — the supplier may offer others.
The supplier's lowest-priced option is the So Green Tracker 24m. This variable tariff costs £1,508 a year, requires a 24-month commitment, and includes a £190 exit fee.
Households preferring to lock in their rates might consider the So Kestrel 18m. As the cheapest fixed deal available, it is priced at £1,735 annually over an 18-month term and similarly applies a £190 exit fee.
Tariff details
This supplier's full tariff range
So Energy offers a range of household tariffs, covering standard variable, fixed-rate, and specialist options. The supplier provides fixed-term contracts ranging from 12 to 24 months.
Customer reviews
So Energy holds a Trustpilot rating of 4.5 out of 5 across 30,767 reviews. Feedback indicates a largely positive sentiment: 73% of users award five stars, while 12% give a single star. The supplier responds to 99% of negative reviews.
Reviewers frequently highlight polite staff and a straightforward experience when managing accounts or switching plans. Conversely, critical feedback often points to extended phone wait times, communication delays, and slow issue resolution.
In the annual Which? energy survey, the supplier achieved an overall score of 60. It received 3 out of 5 for both customer service and value for money, alongside 5 out of 15 for complaints handling and 2 out of 10 for smart meter support.
Apps
So Energy provides mobile apps for Apple and Android devices. The iOS version is rated 4.7 out of 5 based on 225 ratings, while the Google Play Store edition scores 4.64 out of 5 from 138 ratings.
Both applications receive regular maintenance updates. A recent sample of iOS feedback averages 3.75 stars, with users noting the clear design and straightforward navigation. However, some report occasional glitches when submitting meter readings.
Service and support
So Energy achieves a Citizens Advice score of 2.86 out of 5, ranking 12th overall. The supplier records 57.1 complaints per 10,000 customers.
Average call centre wait times sit at 1 minute 6 seconds, and the supplier responds to 91.3% of emails within two days. Customer service lines operate on weekdays between 9am and 5pm, remaining closed on weekends. Additionally, So Energy maintains formal vulnerability commitments registered with Citizens Advice.
Complaints and performance
In Q2 2026, So Energy received 1,474 complaints for every 100,000 customers.
The supplier resolved 49% of these complaints by the end of the next working day. It fixed 93% of complaints within eight weeks.
Top reasons for complaints
Customer service was the main cause of complaints, making up 31% of all cases. Payment issues were the second most common reason, accounting for 16%.
General billing and meter reading issues caused 13% of complaints. A further 12% of complaints were about billing and meter readings linked to smart or advanced meters.
Problems with installing, swapping, or fixing smart and advanced credit meters made up 8% of complaints.
Green energy
According to Citizens Advice data, So Energy's electricity fuel mix is largely renewable, with some fossil fuels and a small amount of nuclear and other sources. For its fixed-rate tariffs, the supplier matches the electricity its customers use by buying Renewable Energy Guarantees of Origin (REGO) certificates. It also buys power directly from older wind farms in the UK that no longer get government support.
The company does not buy REGO certificates for its standard variable tariff, So Flex, as the Ofgem price cap does not cover the cost. Customers who want a variable tariff backed by renewable electricity can consider So Green Tracker, whose rates follow the price cap and are set below it.[1]
Our verdict
So Energy offers highly rated apps and strong Trustpilot reviews, but weak official scores from Citizens Advice make it a mixed option for households.
So Energy presents a mixed picture for households considering a switch. Trustpilot feedback frequently highlights helpful staff and functional apps, but official performance data is less reassuring. A Citizens Advice score of 2.86 out of 5 and a low Which? rating for complaints handling indicate that resolving formal issues may take longer than average.
The supplier may suit households comfortable managing their accounts online via a mobile app. However, those who prioritise strong official customer service scores or robust complaints handling might prefer to compare alternative providers.
Frequently asked questions
Who owns So Energy?
So Energy was founded in 2015. In 2021, Ireland's Electricity Supply Board (ESB) bought a majority share in the business.
Does So Energy charge exit fees?
Yes. So Energy's cheapest variable and fixed tariffs both carry a £190 exit fee if you decide to leave the contract early.
How long are So Energy's fixed contracts?
So Energy provides fixed-term contracts ranging from 12 to 24 months, depending on the specific deal you choose.
Is So Energy highly rated by customers?
Customer sentiment is mixed. While it holds a strong Trustpilot rating of 4.5 out of 5, its official Citizens Advice score is much lower at 2.86 out of 5.
Does So Energy have a mobile app?
Yes, So Energy offers a mobile app for both Apple and Android devices, allowing customers to submit meter readings and manage their accounts.
What are So Energy's opening hours?
The So Energy customer service team is available on weekdays between 9am and 5pm. The lines are closed on Saturdays and Sundays.
How quickly does So Energy answer the phone?
According to Citizens Advice data, the average wait time to speak to a So Energy call centre agent is 1 minute 6 seconds.
Does So Energy support vulnerable customers?
Yes, So Energy has formal vulnerability commitments registered with Citizens Advice.
Should I switch to So Energy?
So Energy is a good option if you want a highly rated mobile app and helpful staff. However, if strong official complaint-handling scores are important to you, you may want to look elsewhere.
What changed this month
This month, So Energy's iOS sampled neutral reviews rose from 0 to 1, So Energy's iOS app days since last update rose from 45 to 75, and So Energy's play store days since last update rose from 46 to 76. There were 10 other data changes this month — see the full changelog below for details.
Data changes this month (17)
So Energy
- Trustpilot reviews30,220 → 30,767
- Trustpilot negative reviews replied %100 → 99
- iOS app ratings count197 → 225
- iOS app days since last update45 → 75
- iOS sampled reviews avg stars3.67 → 3.75
- iOS sampled neutral reviews0 → 1
- Play Store rating4.62 → 4.64
- Play Store ratings count127 → 138
- Play Store days since last update46 → 76
- Play Store positive ratings %92 → 91.9
- Play Store negative ratings %3.2 → 2.2
- Play Store neutral ratings %4.8 → 5.9
- Play Store net-positive %88.8 → 89.7
- Avg social media response time351 → no longer available
- Cheapest variable tariff£1,687.08 → £1,508.13
- Cheapest fixed tariff£1,828.88 → £1,734.74
- Cheapest tariff£1,687.08 → £1,508.13
Written by
Rob Gibbs
Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.
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