Back to All

Recent switching data from our Energy Market Data Hub (EMDH) shows 581,000 customers switched energy supplier in September 2019, 6% more than September 2017 and September 2018. September 2019 is also the month with the third most changes of supplier (CoS) in 2019 so far. The total number of completed switches in 2019 has now reached 4.7 million (4,700,000) – 11.4% more than over the same period in 2018.

Switches started reached 716,000, an 8% increase on September 2018’s switches started and the third highest month since January 2017.

In terms of switching types, September 2019 saw another jump in the number of customers moving from challengers to the Big Six, with 85,000 switches falling under this switch type. This marks September 2019 as having the highest number of switches from challengers to the Big Six since January 2017. This is also 43% more than September 2018.

Additionally, there were:

  • 148,000 Big Six to Big Six switches (0% change compared to September 2018),
  • 206,000 Big Six to challenger switches (9% less than September 2018), and
  • 141,00 challenger to challenger switches (26% more than September 2018).

In addition, towards the end of the September we saw a significant commercial acquisition. The impact of this acquisition on regular switches started figures will not be seen until October’s results, however we’d like to know if our industry colleagues believe we should include or exclude these type of switches – switches based on commercial acquisitions through the CoS process rather than customer behaviour – from our regular monthly reporting. Let us know on LinkedIn or Twitter.

For more information on switching figures, contact Ian Scougal at [email protected] or Paul Linnane at [email protected]



The above figures relate to electricity switching in Great Britain only.

Switches started refers to the number of valid switches started, also known as switches raised.

All data is provided by ElectraLink’s Energy Market Insights (EMI).

ElectraLink has been granted the governance protections to hold, transfer and analyse switching and other data.