Generating Availability Data System (GADS)

​​​​​​​​​​​​​​​​The electric utility industry initiated GADS in 1982 to expand data collection activities that it began in 1963. Today, NERC’s GADS maintains operating histories on more than 5,000 generating units in the North America.

GADS is recognized as a valuable source of reliability information for total unit and major equipment groups and is widely used by industry analysts in a variety of applications. Through GADS, NERC collects information about the performance of electric generating equipment and provides assistance to those researching information on power plant outages. GADs also supports equipment availability analyses and other decision-making processes in the industry. GADS data is also used in conducting assessments of generation resources and improving their performance.

GADS is a mandatory industry program for conventional generating units that are 20 MW and larger. GADS is open to any organization that operates electric generating facilities and is willing to follow the GADS reporting requirements specified in the GADS Data Reporting Instructions (DRI).

For more information, please contact:


GADS Reporting Contacts
NERC Conventional NERC Wind

MRO

NPCC RF SERC
Texas RE Conventional

Te​xas RE Wind

 
 

 GADS News

GADS 2024 Reporting Period

The 2024 GADS Reporting Period will not be available until 2023 reporting is complete. 2023 Reporting should be completed by February 15, 2024. The 2024 Reporting period will open on February 23, 2024.


When the 2024 Reporting Period opens, new Design Data will be required; data reporting templates and instructions are available here. The ability to report Event and Performance data will not be available until a unit’s design data is entered.


The Q1 2024 reporting deadline has been extended to coincide with the Q2 2024 reporting deadline (August 15, 2024) to provide additional time to complete the new reporting requirements.


Multiple GADS design data application training sessions will be scheduled beginning in March. See the GADS Training page for details.


Note: Design data will not be required for miscellaneous, nuclear, geothermal, and multi-boiler/multi-turbine units.


 Data Submission

2024 Reporting Deadlines for GADS Conventional, GADS Wind, and GADS Solar

​Reporting Deadline* Period of Operation to Report
February 15 ​Final 2023 reporting due
May 15 N/A
​August 15​ Q1 2024 (January 1 - March 31), Q2 2024 (April 1 - June 30)
​November 15 ​Quarter 3: July 1 - September 30
​February 15 ​Quarter 4: October 1 - December 31

*When a deadline falls on a weekend or holiday, reporting will be extended through the following business day.