Table 1

Potential savings for the two cost-saving methods

Generic switchingPrice per unit
Total annual savings (millions)No of actionsMedian monthly cost saving per actionTotal annual savings (millions)No  of actionsMedian monthly cost saving per action
Theoretical maximum savings£56.31 828 802£13£410.414 274 013£8
Savings over £50/month£34.8298 094£82£273.52 035 124£92
Savings over £100/month£21.9112 701£150£193.7905 352£159
Savings over £500/month£2.53167£636£35.041 362£655
Savings over £1000/month£0.7476£1311£12.77283£1342