Business Power Companies

What options do you have when it comes to the provision of your commercial energy in the UK ? The traditional big 6 account for approximately 90% of the current market with the remainder made up by smaller independents.

Learn more about the top 10 suppliers with reviews and guidance on product offerings.

The Big Six Suppliers

Southern Electric is part of the Scottish and Southern Group (SSE) which incorporates SWALEC and Scottish Hydro. They supply nearly 10 million customers making them the 2nd largest supplier in the UK. Read More

ScottishPower generates and supplies gas and electricity across the whole of the UK. It acquired Manweb in 1995 and currently supplies over 5,600,000 customers. Read More

EDF are also a supplier and generator of energy through their nuclear division run by British Energy. With 5.7 million customer accounts they are part of the big six UK providers. Read More

Eon are a 100% privately owned utility provider with their global headquarters based in Germany. In the UK they supply over 5.3 million customers with gas and electricity. Read More

Npower RWE are a German owned utility company producing over 10% of the UK’s energy demand. Npower have 6.5 million residential and business customers with their UK office in Swindon. Read More

British Gas are the clear leader in this industry supplying more than 12 million homes and 1 million businesses with their fuel requirements. That’s a 50% residential and 25% business market share. Read More

Market Data Summary

Here are the latest market supply numbers for the big six providers.

  • SSE 3.5m homes and businesses 10m customer accounts (source: SSE)
  • ScottishPower 5.6m (Source: ScottishPower)
  • EDF 5.5m domestic and business customers (Source: EdfEnergy)
  • EON : 5.010m power customers 3.140 gas customers (Source: Eon)
  • Npower 6.5m residential and business customers (Source: Npower)
  • British Gas 12m homes and 1m businesses (source: Centrica)

Note: The numbers are more than the number of homes because many source two single fuels from different providers. EG: Gas from Npower and electricity from ScottishPower.

Independent Suppliers

Opus Energy provides free smart meters to all new customers. They currently supply over 150,000 business premises in the UK and are part of the GDF SUEZ group. Read More

First Utility are the UK’s largest independent energy supplier with over 200,000 residential and business customers. They are often the cheapest supplier on comparison sites. Read More

Electricity 4 Business (E4B) are no longer trading and are in administration. Previous customers of E4B would have been moved to British Gas as the supplier of last resort. Read More

Energia is Northern Ireland’s independent commercial provider with over 65,000 business customers. Part of the Viridian Group they have a 33% market share in NI. Read More

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