So Energy Tariffs, Prices & Reviews (2025 Rates)

About So Energy

So Energy is a 100% renewable energy supplier for UK households and is backed by Renewable Energy Guarantee of Origin (REGO) Certificates. The company first entered the market at the end of 2015. In 2018, they were awarded the Energy Provider of the Year by Moneyfacts and named Citizens Advice’s number one supplier. In 2021, ESB Energy purchased the business, increasing So Energy’s customer base to around 310,000.

As well as renewable energy, So Energy offer online account management and paperless billing to further minimise the carbon footprint of its customers. The company also gives customers the opportunity to vote on where their electricity comes from each year: wind, solar, hydro, or biomass.

So Energy offers a number of fixed-rate tariffs and one standard variable tariff. The company holds a low price commitment which aims to guarantee that its fixed tariff price per kWh is within the cheapest 10% of the market. Tariffs are only available as direct debit and are not available as Pay As You Go.

Here we go into more detail about So Energy’s tariff prices, the company’s latest updates and reviews.

So Energy Price per kWh

Data source: https://so.energy/our-tariffs/
 

Average So Energy Prices per Property

Last Updated: 21/10/25

The above calculations use the latest tariff rates of 25.63p/kWh for electricity and 6.37p/kWh for gas. Daily standing charges are 46.05p and 34.56p respectively.

These figures are correct as of October 2025 using the So Flex tariff rates for a property within a London postcode with payment made via Direct Debit. Other UK regions have different prices that could be higher or lower than those quoted.

So Energy Reviews (4.4/5)

So Energy is rated 4.4 / 5 on TrustPilot.

So Energy’s TrustPilot rating is below the average rating for all of the energy suppliers we have compared.

Check out one of their latest customer reviews below:

“Brilliant Company. I have had So Energy provide my energy for some years now, and I can honestly say they have been faultless. If you are thinking of switching Energy supplier, So Energy is the one: great competitive prices, no hassle, accurate billing and a great all-round company. I cannot recommend So Energy highly enough. Give it a try, I’m sure you won’t be disappointed.“

So Energy Fuel Mix (%)

The table displays the most recent fuel mix (%) of So Energy. Fuel mix is the ratio of energy sources suppliers use to generate electricity.

How does their renewable energy mix compare to the UK average?

So Energy has a renewable fuel mix 150% higher than the UK average.
 

So Energy Latest News

What Inflation Means for Your Energy Bills – CNET

Mike De Socio / CNET – Price increases for a lot of things have slowed, but your utility bills are probably still rising. Here’s how to deal with it.

How One Energy CEO Is Leading a Transition Toward Clean Energy

/ Harvard Business Review – A conversation with Duke Energy CEO Lynn Good on when to test your assumptions and how to make incremental adjustments to your strategy.

Gravity Storage 101, Or Why Pumped Hydro Is The Only Remotely Real Gravity Storage

Michael Barnard / CleanTechnica – My recent article celebrated the great month that pumped hydro had between the Loch Ness Red John facility selling to Statkraft. The UK finally settles on a cap and a floor for the technology. China already has 365 GW of power and 4 to 8 TWh of energy storage.