League tables

WhichGreen exists to help you choose the best green supplier you can, so you have the best chance of actually making a difference with your electricity bill.

At WhichGreen, we believe the best way to measure who’s green and who’s not is to look at which suppliers are building new sources of renewable energy. After all, only by building sources of green energy can we hope to reduce carbon emissions and fight climate change.

Some energy companies are far bigger than others, so we thought the best way to measure a supplier’s green credentials was to look at how much new build they were developing per customer.

New generation is defined by the Ofgem commission date of the renewable energy project.

That works out as a simple measure: how many pounds each supplier spent per customer, per year, on building new sources of green energy. In 2009, the average spend per customer of all suppliers was £19.55.

As this is now the sixth year that the WhichGreen table has been running, we’ve also produced a new table based on a six year average, which we think gives a more accurate picture of each suppliers ongoing commitment to building new sources of clean, renewable energy.

As always we’ll leave you to draw your own conclusions.