So Energy
Thinking about choosing So Energy, or already with them? Here’s the evidence on service and costs, with the limitations explained so you can decide what matters to your home.
Cap-tracking variable tariff, no exit fees.
Frequently among the cheapest 12-month fixes.
Discounted overnight rate for EV households.
*Estimated dual-fuel cost at Ofgem typical usage. Always confirm live pricing on the supplier's own website.
Customer Satisfaction
Switching Performance
EstimatedUp to 5 working days (Ofgem switching guarantee)
Exit fees
Typically £0 on variable · up to £75 on fixed tariffs
Typical transfer period
Up to 5 working days
Smart Meter Intelligence
Updated periodicallyCustomer Service Performance
EstimatedLive figures not always available — latest verified indicators shown.Avg. call wait
~8 min average
Email response
Within 2 working days
Live chat
Available
Weekend support
Yes
24-hour support
Emergency only
UK call centres
Yes
Accessibility services
Yes
Independent Service Assessment
Updated periodicallyPowerGuardian service score, out of 5
#2 of 9
Overall ranking
This is PowerGuardian's own service score, built from our supplier monitoring. It is not the official Citizens Advice star rating — where we hold that published rating it is shown separately with its source.
Tariff Timeline
Updated periodically- 2015Supplier established
So Energy began supplying UK households.
- 2020So Flex launched
Cap-tracking variable tariff, no exit fees.
- 2021So Fixed 12 launched
Frequently among the cheapest 12-month fixes.
- 2022So EV launched
Discounted overnight rate for EV households.
- 2025Price cap tracking
Variable tariffs realigned to the latest Ofgem price cap.
- 2026Current tariff line-up
3 tariffs currently available across fixed, variable and smart options.
Timeline expands automatically as more historical pricing data becomes available.
Best For
Highlighted profiles are automatically matched to this supplier's tariffs, smart-meter support and pricing.
Strengths
- Frequently among the cheapest fixed tariffs on the market.
- Strong service ratings for a mid-size supplier.
- Backing from ESB has improved financial stability.
Consider Before Switching
- Smaller smart-tariff range than the largest suppliers.
- App and self-service tools trail the market leaders.
Is This Supplier Right For You?
EstimatedTypical usage
Heating type
Smart meter
Electric vehicle
Solar panels
Personalised match score: 83/100
Why this recommendation:
- Strong smart-meter support unlocks time-of-use savings.
Monday UK Energy Savings Briefing
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- Exclusive insights
Recent Supplier Developments
- 7 September 2026
Increased wholesale costs and rising price cap negatively impact tariff competitiveness for all suppliers.
- 18 May 2026
Launched a new 12-month fix priced below the Ofgem cap in most regions.
Independent supplier intelligence. PowerGuardian is not affiliated with So Energy. Verified figures are sourced from published Ofgem, Citizens Advice and supplier data; estimated figures are modelled from PowerGuardian scoring and clearly labelled, and every module is built to connect to live data feeds as they become available. Always verify current pricing on the supplier's own website before switching.
Seeing estimated bills or odd charges from So Energy? Faulty meter readings — not the supplier — are often the cause. Check our guide to common smart meter problems and how to fix them before you judge their billing accuracy or decide to switch.
Related Guides
PowerGuardian customer reviews
Reviews submitted directly to PowerGuardian by UK households. Kept separate from Trustpilot, Citizens Advice and Ofgem data — never blended into a single score.
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