Large suppliers: Internal and external switching rate by fuel type (GB)

Chart

Source: Six large suppliers.

Information correct as of: July 2019

This chart shows the proportion of monthly internal switches for domestic gas and electricity customer accounts for the six large suppliers. As a benchmark, the chart also shows monthly external switching rates (ie to another supplier) for the whole market.

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Large suppliers: Internal and external switching rate by fuel type (GB)
Electricity total internal switching rateGas total internal switching rateElectricity total external switching rateGas total external switching rateElectricity internal switching rate by tariffGas internal switching rate by tariff
Nov-145.03%5.70%0.89%1.03%2.34%2.77%
Dec-144.21%4.75%1.13%1.19%1.86%2.14%
Jan-154.78%5.61%0.69%0.74%2.91%3.54%
Feb-155.22%5.96%0.94%1.10%2.89%3.34%
Mar-155.26%5.94%1.38%1.45%3.40%3.93%
Apr-155.41%6.21%0.99%1.02%2.70%3.15%
May-153.84%4.26%0.97%0.94%1.69%1.89%
Jun-153.14%3.38%0.83%0.83%1.61%1.75%
Jul-153.34%3.64%0.86%0.91%1.82%2.01%
Aug-153.95%4.29%0.91%0.93%1.76%1.89%
Sep-153.50%3.80%1.01%1.06%1.98%2.19%
Oct-153.78%4.15%1.26%1.31%2.02%2.24%
Nov-153.92%4.25%1.24%1.30%2.10%2.31%
Dec-153.31%3.55%1.11%1.15%1.67%1.76%
Jan-164.78%5.39%0.88%0.90%3.00%3.46%
Feb-165.00%5.54%1.40%1.45%3.15%3.53%
Mar-164.88%5.40%1.63%1.72%2.72%3.08%
Apr-164.40%4.80%1.38%1.30%2.28%2.56%
May-163.82%4.23%1.24%1.24%2.12%2.37%
Jun-164.43%4.82%1.20%1.20%2.28%2.48%
Jul-164.26%4.59%1.09%1.05%1.95%2.07%
Aug-162.82%2.98%1.11%0.99%1.55%1.65%
Sep-163.90%6.26%1.25%1.29%1.99%2.09%
Oct-165.10%5.48%1.74%1.82%2.12%2.23%
Nov-164.45%4.85%1.38%1.41%2.05%2.25%
Dec-163.14%3.41%1.51%1.51%1.33%1.47%
Jan-174.33%4.81%1.14%1.14%2.18%2.46%
Feb-175.46%6.02%1.42%1.40%2.93%3.28%
Mar-174.70%5.08%1.83%1.84%2.60%2.84%
Apr-174.42%4.87%1.60%1.55%2.59%2.86%
May-174.16%4.51%1.47%1.45%1.97%2.07%
Jun-173.75%4.09%1.35%1.37%1.81%2.02%
Jul-173.60%3.89%1.25%1.33%1.91%2.11%
Aug-174.07%4.28%1.47%1.51%1.67%1.86%
Sep-173.92%4.02%1.85%1.96%1.68%1.89%
Oct-174.06%4.40%1.89%1.99%1.87%2.11%
Nov-173.94%4.27%1.56%1.62%2.01%2.22%
Dec-174.09%4.44%1.36%1.40%1.52%1.65%
Jan-183.84%4.15%1.14%1.09%1.95%2.12%
Feb-185.53%5.77%1.50%1.50%3.69%3.84%
Mar-184.65%4.99%1.57%1.61%2.63%2.87%
Apr-186.26%6.65%1.58%1.60%2.90%3.03%
May-185.40%5.91%1.64%1.72%1.86%2.06%
Jun-185.71%6.01%1.61%1.67%3.18%3.34%
Jul-185.22%5.75%1.56%1.57%2.31%2.46%
Aug-185.34%5.70%1.65%1.69%3.14%3.29%
Sep-186.80%7.51%1.85%1.86%2.57%2.80%
Oct-184.51%4.92%1.97%2.01%2.57%2.80%
Nov-184.03%4.32%1.63%1.63%2.08%2.23%
Dec-183.21%3.33%1.37%1.45%1.62%1.62%
Jan-194.09%4.42%1.27%1.25%1.68%1.80%
Feb-194.63%4.97%1.53%1.49%2.20%2.33%
Mar-195.68%6.05%2.06%2.07%3.17%3.31%

More information

At-a-glance summary

Internal switching rates among the six large suppliers have been consistently higher than external switching rates, with regular seasonal spikes in Spring and Autumn.

There was a break in the usual seasonal fall in both internal and external switching rates in Q2 2018. There was a large increase in the internal switching rate for both electricity and gas. The internal and external switching rates remained high in Q3 2018, relative to previous quarters. They then fell in Q4 2018 to levels below the corresponding rates in the previous year. In Q1 2019, both internal and external switching rates increased again and reached higher values than in Q1 2018.

Relevance and further information

Together, internal and external switching rates provide a more comprehensive indicator of how engaged consumers are in the domestic retail energy market.

To note, we also publish monthly switching numbers separately. The two sets of data use different sources, and run to different timescales.

Methodology 

Internal total switching refers to a customer changing tariff, payment method or account management (online/offline) with their existing supplier. 

Internal tariff switching only includes tariff changes that, as a minimum, represent ‘active choices’. For example, the observed switch from a ‘dead’ tariff or an existing fixed tariff to a default standard variable tariff may not reflect an active choice and is not included in the internal tariff switching rate.

Date correct
July 2019
Policy areas