Top 10 Business Energy Suppliers

(Updated for 2026)

1. British Gas

British Gas Business is the largest supplier of business energy in the UK. It offers fixed-price contracts (1–3 years) and variable-price plans, plus British Gas Lite, an online-only option built for smaller businesses.

• Business gas and electricity plans available

• Gas boiler repair, service and maintenance contracts

• Support for switching to renewable energy tariffs

• Solar PV, biomass boiler and heat pump solutions

• Online account management with online meter reading submission

• Multi-site discounts available

2. E.ON Next

Close to half a million UK businesses use E.ON as their energy supplier. E.ON Next handles SME customers with 1, 2 and 3-year fixed tariffs (including 100% renewable electricity options) and full online account management. Larger energy users are served separately by npower Business Solutions, part of E.ON UK, which handles flexible purchasing and portfolio management.

• Fixed-term tariffs for SMEs, including renewable options

• Full online account management

• Flexible purchasing and portfolio services for larger energy users via npower Business Solutions

• Smart meter support

3. EDF Energy

EDF Energy is the UK's largest generator of low-carbon electricity and serves everyone from single-site SMEs to large multi-site businesses. It now also handles former Opus Energy customers transferred following Opus's exit from the market.

• Business gas and electricity tariffs

• Fixed-price tariffs for up to 4 years

• Short-term contracts available for start-ups

• UK-based customer service team

• Online account comparison and switching tools

4. npower Business Solutions

npower Business Solutions (nBS), part of E.ON UK, focuses on larger and higher-usage businesses that need flexible purchasing and risk management tools rather than a simple fixed tariff.

• Flexible purchasing contracts, a first for the UK commercial energy market

• Range of contract options and trading features

• Daily market reports and position tracking via the Risk Navigator portal

• Optimisation Desk support for managing energy positions

5. SSE Energy Solutions

SSE supplies business electricity and gas to thousands of UK companies, with renewable electricity options, smart meter upgrades and corporate Power Purchase Agreements (PPAs) for larger organisations. SSE also trades under regional brand names, including SSE Airtricity, SSE Atlantic, SSE Southern Electric, SSE Scottish Hydro and SSE Swalec.

• Fixed-price tariffs for up to 4 years

• Energy efficiency guidance

• Direct access to the energy trading team on variable-rate contracts

6. Scottish Power

Scottish Power is one of the UK's largest energy suppliers, with a particular focus on green electricity, serving businesses of all sizes.

• Fixed-price gas tariffs for up to 2 years

• Bespoke products for larger businesses

• App-based account, payment and meter reading management

• Direct Debit, BACS and cash payment options

7. Octopus Energy

Octopus Energy for Business sells directly to businesses with transparent pricing and zero-carbon electricity as standard. It offers both fixed-term and flexible contracts, plus time-of-use products such as Electric Match and Shape Shifters aimed at businesses that can shift consumption to cheaper periods.

• Transparent, published pricing

• Zero-carbon electricity as standard

• Strong value for SMEs; larger businesses may find more competitive specialist tariffs elsewhere

8. Ecotricity

Ecotricity supplies green electricity to thousands of UK businesses and is developing 'green gas from grass' through its green gas mills programme, including its Reading project.

• Business electricity and gas tariffs

• Simple fixed tariffs for small businesses

• Dedicated business account managers

9. Ørsted

Ørsted holds a leading position in the UK commercial and industrial energy market. It offers long-term renewable Corporate Power Purchase Agreements (PPAs), giving larger energy users price certainty backed by certified green electricity from Ørsted's wind and solar assets.

• Long-term renewable PPAs

• Suited to larger, higher-usage businesses

• Certified green electricity supply

10. TotalEnergies

TotalEnergies is a global energy group with a growing UK business supply arm, known for consistently competitive rates on multi-site portfolios backed by significant international scale.

• Business gas and electricity for single and multi-site operations

• Competitive multi-site pricing

• Backed by global supply and trading infrastructure