UK non-domestic supplier profile

So Energy business energy supplier profile

So Energy is a UK energy supplier trading as So Energy Trading Limited, with a consumer-focused brand built around renewable electricity, fixed tariffs, and online account management. Its website highlights domestic energy supply, help content, and solar/commercial solar services, but I did not find a public business energy rate card or published out-of-contract/deemed/default business tariff schedule.

Single site, get an instant comparison Multi-site, book a tender call All UK suppliers

Some entries on this profile rely on third-party sources and may have changed. Always confirm rates and contract terms with the supplier directly before relying on them.

Last updated 16 May 2026 · Talk to our team on 0161 521 3400

Snapshot, in plain English

Is So Energy right for your business?

Established supplier

Licensed for 11 years with accounts currently filed. Sizing detail not yet independently researched, but the Companies House profile shows an established, active licensee suitable for single-site SME and mid-market multi-site contracts. Run standard counterparty due diligence before a 3-year commitment above £250k spend.

Risk band reasoning: Active, 11 years trading, accounts current.

11 yrs tradingRisk band: Low riskLast accounts filed 2024-12-31Next accounts due 2025-12-31Status: Active

Your business	Fit	Why
Single site SME	Fit	Often competitive on single-site fixed rates.
Multi-site SME	Fit	Most mid-market suppliers handle multi-site billing.
I&C £250k to £1m spend	Possible	Check counterparty viability over a 3-year term.
I&C above £1m spend	Not suited	Below the scale threshold for I&C tenders.

Verify on Companies House (free public record)

Quick facts

Trading name	So Energy
Licence holder	SO ENERGY TRADING LTD. Parent: So Energy Trading Limited (Company No. 09263295) Co. 09263295
Supplies	Gas and Electricity
Website	so.energy
Business phone	0330 111 5050
Email / contact	help@so.energy Contact page
Rate status	Quote required

Company data

Live data on the licence-holding companies behind So Energy, compiled by Purely Energy's independent research team and refreshed monthly.

Independent research on So Energyhasn't been published yet. Our monthly refresh will publish it at the next run.

So Energy out-of-contract and deemed rates

Not publicly published / quote required

So Energy published rate page

If you are on deemed, default, rollover, variable, or Out-of-contract rates, ask for a written renewal quote and compare it against live market prices before agreeing a new contract.

Where your p/kWh actually goes

Indicative split for a UK I&C electricity bill in 2026, sourced from Cornwall Insight's non-commodity cost research. Your meter, region and contract type shift the exact mix, but the four components are always present.

Wholesale energy, 38%Gas or power bought on the wholesale market. The figure most coverage focuses on.
Non-commodity costs, 53%Network charges (DUoS, TNUoS), policy levies (RO, FiT, CfD, Capacity Market), CCL and balancing costs.
Supplier margin, 6%What the supplier earns. Always priced into the unit rate.
Broker margin, 3%What we earn for tendering and managing the contract. Shown separately on every Purely Energy quote.

Who So Energy may suit

Limited public B2B fit evidence on the main supply site. The website appears primarily domestic/customer-facing, though it does offer commercial solar and battery services. Business energy customers would likely need a quote or direct contact rather than a published business tariff.

Trading name and licence-holder notes

The licence holder appears to trade under the brand So Energy. Public pages state that So Energy is a trading name of So Energy Trading Limited, and the company number is 09263295. I did not find evidence of a separate parent brand in the sources reviewed.

Switching from So Energy to a fixed business contract

UK businesses can switch gas and electricity supply away from So Energy once their fixed contract ends, or after resolving any open objection or termination-window issue. The process is the same for every supplier on the non-domestic market, but a few checks done in the right order make the transfer materially faster.

1. Find your contract end date. It's on your last renewal letter or the most recent bill from So Energy. Most non-domestic contracts have a 1 to 6 month termination window before that date, outside of which you may auto-roll onto a new fixed term.
2. Get your MPAN and MPRN ready. The 21-digit MPAN (electricity) and 6 to 10-digit MPRN (gas) uniquely identify each meter and are needed for any competing quote. Both appear on your bill.
3. Compare against the live market. So Energy doesn't publish standard out-of-contract rates, so request a written renewal quote first and benchmark it against live market prices before agreeing anything. Purely Energy can run your meters against the wider UK panel and come back with the cheapest fixed offers.
4. Settle the final bill and clear any objections. So Energy will issue a final bill within 6 weeks of supply transferring. If a balance is outstanding, they can object to the switch under industry rules, so clear it before the transfer date to avoid a hold.
5. Sign the new contract. Once the new supplier has your MPAN/MPRN and signed contract, the transfer typically completes within 4 to 8 weeks. There is no break in supply, you simply receive your first bill from the new supplier.

Need help with any of these steps? Our team handles the paperwork end-to-end as part of every quote.

Need help comparing So Energy?

Purely Energy can check your current rates, compare renewal options across gas and electricity suppliers, and review whether switching could reduce your business energy costs.

Get a bespoke quote

FAQs

Who supplies energy under the So Energy brand?+

The Ofgem non-domestic licence is held by SO ENERGY TRADING LTD., ultimately part of So Energy Trading Limited (Company No. 09263295). The trading name on your bill or contract may differ from the licence holder, which is normal and reflects how UK energy is regulated.

What is the So Energy business contact number?+

So Energy can be reached on 0330 111 5050 or by email at help@so.energy. The official contact page is https://www.so.energy/help/emergency.

Does So Energy publish out-of-contract rates?+

So Energy does not appear to publish a standard deemed or out-of-contract rate online. Business customers should request a written renewal quote in advance of their contract end date and compare it against live market prices.

Can I switch away from So Energy?+

In most cases, businesses can switch gas and electricity supply away from So Energy at the end of a fixed-term contract or after resolving any objections, debt, termination-window, or meter-data issues. The safest route is to check your contract terms, final bill position, and renewal dates before starting a transfer.

How long does it take to switch from So Energy?+

Once a new supplier has the meter point details (MPAN/MPRN) and a signed contract, a non-domestic switch typically completes within 4 to 8 weeks. Supply does not break: the new supplier takes over billing on the transfer date.

Is So Energy a UK-licensed supplier?+

Yes. So Energy is on the Ofgem non-domestic licensee register for both gas and electricity. Ofgem maintains the official register at ofgem.gov.uk.

What are out-of-contract business energy rates?+

Out-of-contract rates are the prices a business pays when no fixed-term contract is in place with its supplier. They can be materially higher than negotiated contract rates, so businesses should check their contract end date and renewal window before they expire.

Other UK gas and electricity suppliers

Compare So Energy against these other UK non-domestic gas and electricity licensees on the same directory.

Or browse the full UK business energy supplier directory.

Sources

Public data this profile is built from. Always verify rate and contract details on the supplier's own website before relying on them.