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CLASS trial surveys

Thank you to all our customers for your interest in our project. The trials are now complete.

Participants selected to take part in the surveys were asked to take part in a maximum of five surveys between May 2014 and June 2015. The results for each phase of surveys were then compared to the corresponding results from our baseline survey which was carried out in May 2014 before the trials started.

The good news is that there was no statistically significant change in the proportion of customers noticing a difference in the quality of their electricity supply. Neither have we received any supply quality complaints from customers found to be directly linked to the trials.

The findings from the customer surveys have successfully proved that CLASS does not affect customers’ perception of their electricity service and could be rolled out to electricity customers nationwide.

To find out more about our surveys please see our frequently asked questions.

How to contact us

  • If you have a voltage or power quality query please phone us on 0800 195 4141.
  • If you have a general enquiry about the CLASS project: email us or contact us through our website.

Survey participants

If you tool part in our survey and have an enquiry relating to the survey process or payments, please read our frequently asked questions documents (below) or contact Impact Research on 01932 226793 and ask for the CLASS team or email [email protected].

Survey information

Further information for survey participants can be found in the documents below:

To find out more about CLASS

Watch our latest video featuring the CLASS project team and members of our engaged customer panel:

Or read our customer leaflet 

ENWL CLASS Customer Leaflet

​If you have a question about the CLASS project please contact us.