Electricity and gas supplier

Ruby Energy: contact, login and rates

Q: What is the Ruby Energy business phone number?

Existing customers: 0344 5678 427 (Monday to Friday, 8:30am to 5pm). Numbers taken from Ruby Energy's official contact page, checked 12 September 2026.

Phone numbers, online account login, out-of-contract rates and who owns the company, checked against Ruby Energy's own website.

Facts checked against official sources on 12 September 2026

Existing customers 0344 5678 427

1We find your meter
2You see live prices
3You pick a deal

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Ruby Energy is the new name for BES (Business Energy Solutions), a business electricity and gas supplier based in Fleetwood. It serves SMEs nationwide and has a Corporate Business arm for larger and multi-site customers. Ofgem has an open investigation into its deemed contract terms.

Worth knowing: Ruby Energy is the August 2024 rebrand of BES: its supply companies were renamed Ruby Electricity Ltd and Ruby Gas Ltd on 6 August 2024. Ofgem opened an investigation in September 2023 into whether its deemed contract terms are unduly onerous, widened it in September 2025, and was still listing it as open in September 2026.

Ruby Energy business contact numbers and login

Existing customers 0344 5678 427 Monday to Friday, 8:30am to 5pm

Emergencies are not handled by your supplier. If you smell gas, call the National Gas Emergency Service on 0800 111 999. For a power cut, call 105 to reach your local network operator.

We are not Ruby Energy. Numbers and links are taken from Ruby Energy's own website and were checked on 12 September 2026.

About Ruby Energy

Status	Trading
Supplies	Electricity and gas
Business customers	Small and medium businesses, Corporate
Supplying company	Ruby Electricity Ltd (electricity) and Ruby Gas Ltd (gas)
Company number	06882734 (Ruby Electricity Ltd); 04408013 (Ruby Gas Ltd) on Companies House
Formerly	BES (renamed 2024)
Energy Ombudsman	Yes, refers eligible complaints
On our comparison panel	No
Website	rubyenergy.uk

Ruby Energy serves SMEs nationwide, with a Corporate Business arm for larger and multi-site customers.

Ruby Energy business energy products

These are the business products Ruby Energy describes on its own website. Availability depends on your business size, meter and region.

Energy Supply
Renewable Electricity
Carbon-Neutral Gas
Siteworks
Smart Export Guarantee
Smart Meters

Ruby Energy deemed and out-of-contract rates

If your fixed contract ends without a new one in place, or you move into premises supplied by Ruby Energy without agreeing a contract, you'll pay its deemed or out-of-contract rates. These are typically well above fixed contract prices.

Ruby Energy shows its deemed and 'Default' (out-of-contract) prices on FAQ pages on its website. Ofgem's open investigation into the company concerns whether its deemed contract terms are unduly onerous.

See Ruby Energy's current published rates

For context: in Q2 2026, UK businesses using up to 20,000 kWh of electricity a year paid an average of 38.36p per kWh all-in, which spreads the standing charge across every unit and includes the Climate Change Levy. A bill shows a unit rate plus a daily standing charge, so use our cost calculator to turn your rates into an all-in figure before comparing. Prices for every business size.

Ruby Energy: key facts and recent news

BES Commercial Electricity Ltd and Business Energy Solutions Ltd were renamed Ruby Electricity Ltd and Ruby Gas Ltd on 6 August 2024. Both are active at Companies House. Companies House
Ofgem opened an investigation on 25 September 2023 into whether BES/Ruby's deemed contract terms are unduly onerous (licence condition 7.3), widened it to condition 0A on 23 September 2025, and still lists it as open. Ofgem
In November 2015 BES agreed to pay £980,000 after failing to properly disclose contract terms such as termination fees. Ofgem
Ofgem's list of electricity licensees, dated 10 August 2026, shows Ruby Electricity Ltd holding a non-domestic electricity supply licence. Ofgem · List of all electricity licensees including suppliers

Switching from Ruby Energy

You can usually switch away from Ruby Energy when your fixed contract ends, and at any time if you're on deemed or out-of-contract rates. Check your contract for any notice you need to give so you don't roll onto renewal prices.

Find your contract end date on a recent Ruby Energy bill or in your online account.
Check whether you need to give written notice, and by when.
Compare electricity and gas prices for your premises.
Agree a new contract. Your new supplier handles the switch, and your supply isn't interrupted.

Compare prices for your business

Ruby Energy FAQs

What is the Ruby Energy business phone number?

Existing customers: 0344 5678 427 (Monday to Friday, 8:30am to 5pm). Numbers taken from Ruby Energy's official contact page, checked 12 September 2026.

How do I log in to my Ruby Energy business account?

You can log in to your Ruby Energy business account on the supplier's website. If you haven't registered yet, you'll usually need your account number from a bill.

What are Ruby Energy's out-of-contract rates?

Ruby Energy publishes its deemed and out-of-contract rates on its website. These rates are usually much higher than fixed contract prices, so compare before your contract ends. See Ruby Energy's published rates.

Can I complain about Ruby Energy to the Energy Ombudsman?

Yes. Ruby Energy's complaints information refers eligible business customers to the Energy Ombudsman. You normally need to complain to the supplier first and wait eight weeks, or receive a deadlock letter, before the Ombudsman can look at it.

Can I switch away from Ruby Energy?

Yes, usually at the end of your contract, or at any time if you're out of contract or on deemed rates. Check your contract for notice requirements so you don't roll onto renewal rates.

Sources

Facts on this page come from Ruby Energy's official website, Companies House, Ofgem and published reports and announcements, checked on 12 September 2026.

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