About So Energy
So Energy was founded in 2015 and is headquartered in London. It serves approximately 300,000 domestic customers and positions itself as a customer-focused independent supplier offering competitive pricing and straightforward tariff structures.
The company has grown steadily since its launch and has maintained a positive profile in customer satisfaction surveys relative to its size. In Which? sustainability assessments So Energy scored 45% in 2024, placing it in the mid-tier among UK suppliers for green credentials.
Tariff types offered
So Energy offers fixed rate tariffs, typically for 12-month terms, and standard variable tariffs subject to the Ofgem price cap. The company has offered tariffs marketed as including 100% renewable electricity. Check the tariff terms for current sourcing methodology as approaches to green tariff structuring have evolved across the industry.
Contact information
Phone: 0330 111 5000
Website: so.energy/contact
To compare current tariffs from So Energy alongside other UK suppliers, use the comparison tool below.
Trustpilot rating
So Energy holds a Trustpilot rating of approximately 4.2 to 4.5 out of 5. Positive review themes commonly include competitive pricing and responsive customer service. Check Trustpilot directly for the current rating.
Fuel mix
So Energy publishes an annual fuel mix disclosure. Check the So Energy website for current figures.