So Energy Review: Is It a Good Energy Supplier in 2026?
So Energy is a growing UK energy supplier with a clear focus on renewable electricity. It supplies gas and electricity to households across the country and has built its identity around clean energy tariffs and a straightforward digital experience.
The company has grown steadily since it was founded, including expanding its customer base after acquiring customers from ESB Energy. It is not one of the largest suppliers in the UK, but it has established a presence in a competitive market and competes with the likes of Octopus Energy, OVO Energy, and E.ON Next for household customers.
Whether So Energy is the right fit for your home depends on what you are looking for. Renewable electricity, simple tariffs, and competitive pricing are the areas where it tends to perform reasonably well. Customer service consistency and the breadth of its product range are worth examining more carefully.
This review covers So Energy’s tariffs, pricing, customer feedback, and how it compares with other suppliers, so you have a balanced picture before deciding whether to switch.
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So Energy: Company Background
So Energy was founded in 2015 and is based in the UK. It launched as part of a broader wave of challenger suppliers entering the domestic energy market with a focus on competitive tariffs and renewable electricity, targeting households who wanted a greener option without paying a significant premium.
The company grew organically through the late 2010s and gained additional scale when it acquired customers from ESB Energy, the UK retail arm of Ireland’s state energy company, which exited the British domestic market. That acquisition brought a meaningful number of new customers across to So Energy and helped establish it as a more substantial presence in the market.
So Energy has positioned itself as a digital-first supplier. Account management, billing, and customer communication are largely handled online and through its app, which is a common approach among the newer generation of energy suppliers. It does not have the high street presence or telephone-heavy customer service model of some of the older, larger suppliers.
The company competes with Octopus Energy, OVO Energy, and E.ON Next for households who are actively comparing suppliers. It tends to appeal particularly to households who care about renewable electricity and want a smaller, more focused supplier rather than one of the major legacy players.
Like other smaller suppliers, So Energy operates in a market that has faced significant pressure since the energy price crisis of 2021 and 2022. It has continued operating through that period, which is a relevant data point when assessing its stability.
So Energy Tariffs Explained
So Energy’s tariff range is focused and relatively straightforward. It does not offer the breadth of specialist products available from the very largest suppliers, but the core tariff types cover what most households need.
Fixed rate tariffs
So Energy’s fixed tariffs lock in your unit rate for a set period, typically 12 months. Your price will not change during the fixed term regardless of how the Ofgem price cap or wholesale energy prices move. For households who want certainty over their bills and protection against price rises, a fixed tariff is usually the sensible choice.
The usual considerations apply. If market prices fall during your fixed term, you will not benefit until it ends. Check whether any exit fees apply to the specific deal before committing, as some fixed tariffs carry a charge for leaving early.
Standard variable tariff
So Energy’s variable tariff tracks the Ofgem price cap and adjusts when the cap is reviewed each quarter. There are no exit fees on variable tariffs, which makes them easy to leave if you find a better deal. Your bills can rise when the cap increases, which has happened several times in recent years, so this tariff suits households who want flexibility more than certainty.
Customers who have been with So Energy for some time without actively reviewing their tariff may find themselves on the standard variable rate. Comparing against current fixed deals is always worth doing.
Renewable electricity tariffs
Renewable electricity is central to So Energy’s proposition. Its tariffs are backed by renewable energy certificates, meaning your consumption is matched by an equivalent amount of renewable generation fed into the grid. For households who want to support clean energy sources without switching to a specialist green tariff from a larger supplier, So Energy’s standard offering already covers this.
So Energy does not currently offer the more complex smart tariff structures available from Octopus Energy, such as half-hourly time-of-use pricing. If you are looking for an Agile-style tariff or something specifically designed around electric vehicle charging, a larger supplier with a broader smart tariff range is likely a better fit.
So Energy Prices and Standing Charges
So Energy pricing follows the standard UK structure. Variable tariff rates are governed by the Ofgem price cap, and fixed tariff rates are set at the point of sign-up.
Unit rates
The unit rate is what you pay per kilowatt hour of gas or electricity consumed. So Energy unit rates vary by region, reflecting differences in local distribution costs. This is the same across all UK suppliers and is not something specific to So Energy.
Standing charges
Standing charges are a fixed daily fee applied to both your gas and electricity accounts. They cover the cost of keeping your property connected to the energy network and apply regardless of how much energy you use. For lower-usage households, standing charges can make up a notable portion of the overall bill, which is worth factoring in when comparing suppliers.
How competitive are So Energy prices?
So Energy has offered competitive fixed tariffs at various points, and for households comparing across a range of suppliers, it is worth including in any direct price comparison. That said, it does not consistently undercut the larger competitive suppliers like Octopus Energy on every deal, and pricing varies by region and changes with market conditions.
The most accurate way to know whether So Energy is cheaper for your specific household is to compare current tariffs directly using your postcode and usage figures.
See whether switching to So Energy could reduce your energy bills.
So Energy Pros and Cons
Pros
- Renewable electricity included across tariffs as standard
- Clean, straightforward tariff range without unnecessary complexity
- Digital account management tools and app
- Competitive pricing on some fixed tariffs
- Has remained operational through a challenging period for smaller suppliers
Cons
- Smaller supplier than the major players, with a more limited product range
- No smart tariffs or EV-specific deals currently available
- Customer service feedback is mixed, with some complaints about response times
- Less established track record than the longer-running suppliers in the market
- Billing issues appear in a portion of customer reviews
So Energy Customer Reviews
Customer reviews for So Energy are mixed, which is broadly in line with other smaller suppliers in the UK market. On Trustpilot, it sits in a middling position, with a reasonable volume of positive reviews offset by a meaningful number of complaints, particularly around billing and customer service.
The split in reviews follows a pattern that comes up repeatedly across energy suppliers. Customers who have had straightforward accounts with no billing complications tend to be satisfied, often citing the clean online tools and competitive pricing as the main positives. Customers who have needed to resolve an issue or get support quickly have had more varied experiences.
Common positive feedback includes:
- Renewable electricity credentials appreciated by environmentally motivated customers
- Simple tariff structure that is easy to understand
- Online account portal and app rated well by customers who prefer self-service
- Smooth sign-up process for new customers
Common criticisms include:
- Slow customer service response times, particularly during busier periods
- Billing errors affecting a portion of customers
- Some complaints about credit refunds taking longer than expected when leaving
- Occasional issues with smart meter compatibility during and after switching
It is worth reading recent reviews rather than relying on overall platform scores, as the picture can shift over time and newer reviews tend to reflect the current state of the supplier more accurately than historical averages.
Is So Energy Good Value?
For many households, So Energy offers reasonable value, particularly on fixed tariffs where its pricing has been competitive at various points. If you are comparing on price alone and So Energy comes out ahead in your region, it is a legitimate option to consider.
Against Octopus Energy, the comparison is nuanced. Octopus frequently offers competitive fixed tariffs too, and it also has smart tariff options, a stronger customer service reputation, and a broader range of products. For households where price is the sole criterion and So Energy’s fixed deal happens to be cheaper at the time of comparison, it may edge it. For households who also want good service and more tariff choice, Octopus is usually the stronger option overall.
Against OVO Energy, So Energy is broadly comparable on price for standard fixed deals, with neither consistently cheaper than the other. OVO has a larger operation, a broader product range, and a more developed sustainability narrative, though its customer service record has also been inconsistent. The choice between the two often comes down to which offers the sharper deal in your region at the time you are comparing.
Against E.ON Next, pricing is similarly competitive on equivalent fixed deals. E.ON Next has the advantage of a larger operational infrastructure and EV-specific tariffs that So Energy does not currently match.
For households who value renewable electricity and want a straightforward fixed tariff at a competitive price, So Energy is worth including in any comparison. The key is always to check current tariffs directly rather than assuming one supplier will be cheapest.
Compare So Energy deals in your area to see what tariffs are available.
How to Switch to So Energy
Switching to So Energy follows the same process as switching to any UK energy supplier.
Step 1: Compare tariffs
Use an energy comparison tool to see what So Energy is currently offering alongside deals from other suppliers. You will need your postcode and an estimate of your annual energy usage in kWh, which you can find on a recent bill.
Step 2: Choose a tariff
Select the So Energy tariff that fits your household. For most customers, this will be a straightforward choice between a fixed deal and the standard variable tariff. If you want price certainty over the next year, a fixed tariff is usually the more sensible option.
Step 3: Enter your details
Provide your personal information, current meter readings, and preferred payment method. Monthly direct debit is the standard approach and is usually the cheapest way to pay.
Step 4: The switch completes
Switching typically takes around five working days. Your gas and electricity supply will not be interrupted at any point during the process. You will not notice any change in the energy coming into your home.
Step 5: Submit a meter reading
Once the switch is complete, provide an opening meter reading to So Energy. This ensures your first bill is based on an accurate reading. If you have a compatible smart meter, readings may be submitted automatically.
So Energy vs Other Energy Suppliers
So Energy vs Octopus Energy
Octopus Energy is one of the strongest performers in the UK market on both price competitiveness and customer satisfaction, and it is the most direct comparison for So Energy among the major suppliers. Both offer renewable electricity across their tariffs, and both can be competitive on standard fixed deals. Where Octopus pulls ahead is on its smart tariff options, its customer service reputation, and the breadth of its product range. For households who want competitive pricing alongside a strong service track record and more tariff flexibility, Octopus is generally the more rounded option. So Energy may appeal more to households who want a smaller, simpler supplier.
So Energy vs OVO Energy
OVO Energy is a significantly larger supplier than So Energy with a stronger focus on sustainability initiatives and carbon reduction. Both offer renewable electricity as a standard feature of their tariffs. OVO has a more developed product range and a larger customer service operation, though it has faced criticism around billing and service at various points. On price, the two are often broadly comparable for standard fixed deals, with regional variation making a direct comparison necessary. For households motivated primarily by green credentials, both are credible options, though OVO’s sustainability narrative is more developed.
So Energy vs E.ON Next
E.ON Next is a larger, more established supplier with a wider range of tariffs including EV-specific deals that So Energy does not currently offer. On standard fixed tariff pricing, the two are often similar, though this varies by region. E.ON Next has a larger customer service infrastructure, which can matter if you ever need to resolve a problem quickly. For households who want EV tariffs or more complex product options, E.ON Next is the stronger choice. For those who simply want a straightforward fixed tariff with renewable electricity at a competitive price, So Energy is worth comparing directly.
Should You Switch to So Energy?
So Energy is a growing UK supplier that offers renewable electricity as standard, a clean tariff structure, and competitive fixed deals at various points in the market. For households who want a straightforward tariff with green credentials from a smaller, independent supplier, it is a reasonable option to consider.
At the same time, it does not offer smart tariffs or EV-specific deals, and its customer service track record has been inconsistent. For households who want the widest choice of tariffs or the strongest service reputation, larger suppliers like Octopus Energy are likely a more rounded fit.
The most useful thing you can do before switching is compare current tariffs directly. So Energy may or may not be the cheapest option for your home right now, and that can only be answered with a live comparison using your postcode and usage figures.
Compare So Energy tariffs today and see if switching could reduce your energy bills.
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Frequently Asked Questions
It depends on the tariff and when you compare. So Energy has offered competitive fixed tariffs at various points in the market and is worth including in any direct price comparison. It does not consistently undercut larger suppliers like Octopus Energy on every deal, and the cheapest option will vary by region and change over time. Comparing directly using your postcode and usage figures is the only reliable approach.
Yes. So Energy offers fixed rate tariffs that lock in your unit price for a set period, typically 12 months. These provide certainty over your bills and protect against price rises during the fixed term. Check for any early exit fees before signing up to a fixed deal.
Switching to So Energy typically takes around five working days. Your energy supply will not be interrupted at any point during the process.
Yes, in most cases. So Energy accepts customers with smart meters, though smart functionality compatibility can vary depending on the type of smart meter you have. Some customers have reported the meter temporarily reverting to basic mode during or after switching. It is worth checking with So Energy about your specific meter type before switching if smart functionality is important to you.
Yes. Renewable electricity is central to So Energy’s offering and is included across its tariffs as standard, backed by renewable energy certificates. If the specific structure of how the renewable element is sourced matters to you, it is worth checking the tariff details directly.
In most cases, yes. If you pay your energy bills directly rather than through your landlord, you can usually choose your own supplier. Check your tenancy agreement first, as some rental arrangements include energy costs within the monthly rent.
If you are on a standard variable tariff, you can leave without paying an exit fee. If you are on a fixed tariff, there may be an early exit fee if you switch before the deal ends. So Energy will issue a final bill based on your closing meter reading, and any credit on your account will be refunded. Some customer reviews have mentioned delays with final billing and credit refunds, so keeping a record of your closing meter reading and following up if needed is sensible.
So Energy has continued operating through the energy market turbulence of recent years, which removed a significant number of smaller suppliers from the market. That continued operation is a relevant indicator of resilience. As with any smaller supplier, it carries more risk than the very largest players, but if your supplier were to fail, Ofgem’s safety net process would transfer your account to another supplier and your credit balance would be protected.
What Our Customers Have To Say
Read More Of Our Reviews On Trust Pilot
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