Tulo Energy (formerly Square1 Energy) business energy supplier profile
Tulo Energy is the customer-facing brand associated with Square1 Energy Limited, a UK gas and electricity supplier serving domestic and non-domestic customers. The public site presents a tariff database portal, but no business deemed or out-of-contract rate table is visible on the published page, so business pricing appears to be quote-based rather than openly listed.
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Snapshot, in plain English
Is Tulo Energy (formerly Square1 Energy) right for your business?
Licensed for 8 years, accounts currently filed. Independent sizing not yet published. Treat as a smaller licensed supplier until verified: fine for single-site SME contracts subject to credit checks, but extra diligence is warranted before a multi-year commitment above £100k spend.
Risk band reasoning: Active, 8 years trading, accounts current.
| Your business | Fit | Why |
|---|---|---|
| Single site SME | Fit | Often the segment these suppliers target. |
| Multi-site SME | Possible | Check multi-site billing capability and credit limits. |
| I&C £250k to £1m spend | Not suited | Counterparty failure risk too high for this commitment size. |
| I&C above £1m spend | Not suited | Not viable at this scale. |
Quick facts
| Trading name | Tulo Energy (formerly Square1 Energy) |
|---|---|
| Licence holder | |
| Supplies | Gas and Electricity |
| Website | tulo.energy |
| Business phone | 0333 016 5542 |
| Email / contact | help@tulo.energyContact page |
| Rate status | Quote required |
Company data
Live data on the licence-holding companies behind Tulo Energy (formerly Square1 Energy), compiled by Purely Energy's independent research team and refreshed monthly.
Tulo Energy (formerly Square1 Energy) out-of-contract and deemed rates
Not publicly published / quote required
Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 Energy) may suit
Potential fit for UK non-domestic customers seeking a supplier with published contact channels and an online account/tariff portal, but published business OOC/deemed pricing is not available publicly, so customers should expect a quote-led sales process and confirm contract terms directly.
Trading name and licence-holder notes
Ofgem materials show Square1 Energy Limited as a licensed gas and electricity supplier, and a 2025 supplier performance report states that Square 1 Energy failed to notify Ofgem of its rebranding to Tulo Energy and used an unauthorised Tulo Energy email address, indicating the licence holder appears to trade under the Tulo Energy brand.
Switching from Tulo Energy (formerly Square1 Energy) to a fixed business contract
UK businesses can switch gas and electricity supply away from Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 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. Tulo Energy (formerly Square1 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. Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 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.
FAQs
Who supplies energy under the Tulo Energy (formerly Square1 Energy) brand?+
The Ofgem non-domestic licence is held by SQUARE1 ENERGY LTD., ultimately part of SQUARE1 ENERGY LIMITED (Company No. 11042192). 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 Tulo Energy (formerly Square1 Energy) business contact number?+
Tulo Energy (formerly Square1 Energy) can be reached on 0333 016 5542 or by email at help@tulo.energy. The official contact page is https://help.tulo.energy/support/solutions/articles/103000362088-contacting-tulo.
Does Tulo Energy (formerly Square1 Energy) publish out-of-contract rates?+
Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 Energy)?+
In most cases, businesses can switch gas and electricity supply away from Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 Energy) a UK-licensed supplier?+
Yes. Tulo Energy (formerly Square1 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 Tulo Energy (formerly Square1 Energy) against these other UK non-domestic gas and electricity licensees on the same directory.
- 100GreenGREEN ENERGY (UK) LTD.
- Axpo UKAXPO UK LTD.
- BGI Trading LimitedBGI TRADING LTD.
- BP Gas Marketing LtdBP GAS MARKETING LTD.
- Brook Green Trading LtdBROOK GREEN TRADING LTD.
- Coulomb Energy Supply LimitedCOULOMB ENERGY SUPPLY LTD.
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.