We hear a lot about the Big 6, but just how big are the Big 6 and how is that label measured? There are two key ways to measure the size of an energy supplier and neither is related to revenue, profit, history or anything other than:
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- The number of customers or sites on supply
- The volume of energy supplied
The gas and electricity markets in 2014
The Big 6 still, 20 years after the opening of competition account for nearly 80% of the business electricity market with the Big 6 taking 5 of the top six places in terms of volumetric market share. In contrast the gas market sees far less Big 6 dominance with just 20% of business gas customers being supplied by the Big 6 and British Gas Business the highest placed in 5th position. The corollary of this of course is the ‘success’ of independent, smaller and new entrant suppliers in the gas market withTotal Gas & Power, Gazprom Energy and DONG Energy Sales taking the top 3 slots and supplying over 42% of the gas market’s volume. In comparison the highest placed ‘independent’ suppliers in the electricity market are GDF Suez and Haven Power, both of whom manage to rank above the final Big 6 supplier Scottish Power.The business electricity market
Supplier | Market Share |
EDF Energy | 20.4% |
nPower | 18.0% |
E.ON | 15.9% |
SSE | 12.2% |
British Gas Business | 9.1% |
GDF Suez | 4.7% |
Haven Power | 4.6% |
Scottish Power | 4.0% |
Total Gas & Power | 2.8% |
Other Suppliers | 2.7% |
SmartestEnergy | 2.7% |
Opus Energy | 1.9% |
Gazprom Energy | 1.0% |
100% |
The business gas market
Supplier | Market Share |
Total Gas & Power | 17.6% |
Gazprom Energy | 12.8% |
DONG Energy Sales | 11.8% |
Corona Energy | 11.0% |
British Gas Business | 9.6% |
Statoil | 8.0% |
E.ON | 7.2% |
ENI | 6.7% |
GDF Suez | 6.2% |
SSE | 2.1% |
Wingas | 2.0% |
Other Suppliers | 1.8% |
nPower | 1.5% |
CNG | 1.0% |
Opus Energy | 0.30% |
Scottish Power | 0.10% |
100% |