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Home See our solutions to access the grid or the electricity markets - Cataliz Quality of power supply: the solutions Quality of Voltage + (Q+) and Sup Quali + {{item}} {{item.label}} Electricity quality: Access the measurements recorded by your power quality measuring device during the last voltage events {{vm.currentItem}}

+ Access the data recorded during the last voltage events by the quality measuring devices of the sites linked to your portfolio.


  • Consumers who have purchased the Qualité tension+ or Sup Quali+ service

Service description 

Customers having signed up for Qualité tension+ ou Sup Quali+ services can use this service to view the data recorded during a voltage event (voltage dips, overvoltage, outage) from the voltage quality measuring devices installed on their feeds. For each of the customer site's technical monitoring points, the following data is available:

  • The type of event;
  • The voltage values at 10 ms intervals (milliseconds), as well as the extreme variations;
  • The timestamp of the event as well as its duration;
  • The line voltage concerned by the event.

NB: In accordance with the IEC 6100-4 standard, events are time-stamped in universal time.

The data are remotely-read by RTE at night and made available from the next day.


To qualify for this service, you must:

If you are your company’s administrator

  • Go to the Service Portal under "My Services" -"View the power quality data and latest voltage events"

If you are not your company’s administrator

  • Log into your account or create one if you do not yet have one.
  • Contact your administrator for access to the service “View the power quality data – latest voltage events" service

Service fee

This service is not subject to additional pricing and is included in the Qualité tension+ or Sup Quali+ services offer

Reference documentation


For further information, please access to the library to read following documents:

  • Optional Services Contract (2022/04/01 version)

  • CART for consumer customers


For subscriptions or information, please contact your  usual account manager  or the generic email address of the customer service department for your geographical area.

Additional information

Additional offers