Nuclear Integrated Information Database (NIID)

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The Nuclear Integrated Information Database is the cornerstone of the EUCG – Nuclear Committee’s vision is to maintain recognition as the nuclear industry source of business operations financial data and to be the recognized source of nuclear staffing data, used by member companies to improve plant and industry performance. The fundamental purpose of this database is to support benchmarking, target setting and improve members’ access to industry best practices.
EUCG NIID News - February 8, 2026:
  • U.S. 2026 Early Data results (2025 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - May 12, 2025:
  • The U.S. and non-U.S. 2025 Comprehensive Data results (2024 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - February 6, 2025:
  • U.S. 2025 Early Data results (2024 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - May 9, 2024:
  • The U.S. and non-U.S. 2024 Comprehensive Data results (2023 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - February 9, 2024:
  • U.S. 2024 Early Data results (2023 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - April 1, 2023:
  • Both U.S. and non-U.S. 2023 Early Data results (2022 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - May 19, 2022:
  • The U.S. and non-U.S. 2022 Comprehensive Data results (2021 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
EUCG NIID News - February 12, 2022:
  • The U.S. 2022 Early Data results (2021 data) are now available in the Ranking Reports, Book of Benchmarks, and Query Builder for both U.S. and non-U.S. participants. NOTE: When running averages, be sure to rerun historic data to capture signifcant changes.
NIID and Internet Explorer Versions-Technical Support
1) If NIID doesn't look like you expect it to - such as report toolbars missing, listboxes not populated, or text could be jumbled together on reports - these can be caused by Internet Explorer compatibility problems. You can run NIID in Compatibility View. Click here for more information on setting compatibility view

2) If after Export to Excel, your worksheet is blank, do the following to fix:
    a) Open MS Excel.
   b) Go to Options --> Trust Center --> Trust Center Settings --> Protected View
   c) Uncheck the following 3 options (all of them):
      Enable Protected View for files originating from the Internet
      Enable Protected View for files located in potentially unsafe locations
      Enable Protected View for Outlook attachments
   d) Close Excel, close the Web Browser.
   e) Test it to make sure it works.
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