Who Are The Big Six Energy Suppliers?

Since the privatisation of the energy markets in the 90’s, the ‘Big Six’ have dominated the domestic and commercial sector. At their height, they owned 100% collectively. Since 2014 however, this grip has slackened, with reduced boundaries to entry and higher switching rates - due to improved and simplified access - eroding their market share and resulting in a 10% drop in profits to £900 million.