Data Reporting Instructions

These Data Reporting Instructions were developed to assist utility personnel in reporting information to the North American Electric Reliability Corporation’s (NERC) Generating Availability Data System GADS). This reporting system, initiated by the electric utility industry in 1982, expands and extends the data collection procedures begun by the industry in 1963. NERC GADS is recognized today as a valuable source of reliability, availability, and maintainability (RAM) information. This information, collected for both total unit and major equipment groups, is used by analysts industry-wide in numerous applications. GADS maintains operating histories on more than 5,000 generating units. As of January 1, 2013, GADS reporting became mandatory for conventional generating units that are 20 MW and larger. GADS is open to any organization (domestic or international) that operates electric generating facilities and is willing to follow the GADS reporting requirements.

The final version of the 2019 GADS DRI is provided below.  An in-house review is being performed on items such as formatting and grammar.

 
  
  
  
2019 GADS Cause Codes.xlsx2019 GADS Cause Codes1/1/2019
2019GADSDataReportingInstructions.pdf2019 GADS Data Reporting Instructions1/1/2019
Appendix_A_Change_of_Unit_Status.pdfAppendix_A_Change_of_Unit_Status1/1/2019
Appendix_B01_Combined_Cycle_Gas_Turbine_Unit_Cause_Codes.pdfAppendix_B01_Combined_Cycle_Gas_Turbine_Unit_Cause_Codes1/1/2019
Appendix_B02_Combined_Cycle_Steam_Turbine_Unit_Cause_Codes.pdfAppendix_B02_Combined_Cycle_Steam_Turbine_Unit_Cause_Codes1/1/2019
Appendix_B03_CoGenerator_Gas_Turbine_Unit_Cause_Codes.pdfAppendix_B03_CoGenerator_Gas_Turbine_Unit_Cause_Codes1/1/2019
Appendix_B04_CoGenerator_Steam_Turbine_Unit_Cause_Codes.pdfAppendix_B04_CoGenerator_Steam_Turbine_Unit_Cause_Codes1/1/2019
Appendix_B05_CoGenerator_Block_Unit_Cause_Codes.pdfAppendix_B05_CoGenerator_Block_Unit_Cause_Codes1/1/2019
Appendix_B06_Combined_Cycle_Block_Unit_Cause_Codes.pdfAppendix_B06_Combined_Cycle_Block_Unit_Cause_Codes1/1/2019
Appendix_B07_Fluidized_Bed_Combustion_Unit_Cause_Codes.pdfAppendix_B07_Fluidized_Bed_Combustion_Unit_Cause_Codes1/1/2019
Appendix_B08_Fossil_Steam_Unit_Cause_Codes.pdfAppendix_B08_Fossil_Steam_Unit_Cause_Codes1/1/2019
Appendix_B09_Gas_Turbine_Jet_Engine_Unit_Cause_Codes.pdfAppendix_B09_Gas_Turbine_Jet_Engine_Unit_Cause_Codes1/1/2019
Appendix_B10_Geothermal_Unit_Cause_Codes.pdfAppendix_B10_Geothermal_Unit_Cause_Codes1/1/2019
Appendix_B11_Internal_Combustion_Unit_Cause_Codes.pdfAppendix_B11_Internal_Combustion_Unit_Cause_Codes1/1/2019
Appendix_B12_Miscellaneous_Unit_Cause_Codes.pdfAppendix_B12_Miscellaneous_Unit_Cause_Codes1/1/2019
Appendix_B13_Multi_Boiler_Multi_Turbine_Unit_Cause_Codes.pdfAppendix_B13_Multi_Boiler_Multi_Turbine_Unit_Cause_Codes1/1/2019
Appendix_B14_Nuclear_Unit_Cause_Codes.pdfAppendix_B14_Nuclear_Unit_Cause_Codes1/1/2019
Appendix_B15_Pumped_Storage_Hydro_Unit_Cause_Codes.pdfAppendix_B15_Pumped_Storage_Hydro_Unit_Cause_Codes1/1/2019
Appendix_C_Utility_and_Unit_Identification_Codes.pdfAppendix_C_Utility_and_Unit_Identification_Codes1/1/2019
Appendix_D_Cause_Code_Cross_Reference.pdfAppendix_D_Cause_Code_Cross_Reference1/1/2019
Appendix_E_Unit_Design_Data_forms.pdfAppendix_E_Unit_Design_Data_forms1/1/2019
Appendix_E1_Fossil_Steam.pdfAppendix_E1_Fossil_Steam1/1/2019
Appendix_E2_Fluidized_Bed.pdfAppendix_E2_Fluidized_Bed1/1/2019
Appendix_E3_Nuclear.pdfAppendix_E3_Nuclear1/1/2019
Appendix_E4_Internal_Combustion.pdfAppendix_E4_Internal_Combustion1/1/2019
Appendix_E5_Hydro_or_Pumped_Storage.pdfAppendix_E5_Hydro_or_Pumped_Storage1/1/2019
Appendix_E6_Gas_Turbine_or_Jet_Engine.pdfAppendix_E6_Gas_Turbine_or_Jet_Engine1/1/2019
Appendix_E7_Miscellaneous.pdfAppendix_E7_Miscellaneous1/1/2019
Appendix_E8_CC_and_Block.pdfAppendix_E8_CC_and_Block1/1/2019
Appendix_F_Equations.pdfAppendix_F_Equations1/1/2019
Appendix_G _Examples_and_Recommendations.pdfAppendix_G _Examples_and_Recommendations1/1/2019
Appendix_H_Failure_Mechanism_Codes.pdfAppendix_H_Failure_Mechanism_Codes1/1/2019
Appendix_I_Data_Release_Guidelines.pdfAppendix_I_Data_Release_Guidelines1/1/2019
Appendix_J_Cause_Code_Amplification_Codes.pdfAppendix_J_Cause_Code_Amplification_Codes1/1/2019
Appendix_K_Outside_Plant_Management_Control.pdfAppendix_K_Outside_Plant_Management_Control1/1/2019
Appendix_L1_Calculating_Combined_Cycle_And_Co-Generation_Block_Data.pdfAppendix_L1_Calculating_Combined_Cycle_And_Co-Generation_Block_Data1/1/2019
Appendix_L2_Calculating_Combined_Cycle_And_Co-Generation_Block_Data.pdfAppendix_L2_Calculating_Combined_Cycle_And_Co-Generation_Block_Data1/1/2019
Appendix_M_Differences_Between_NERC-GADS_and_ISO-GADS_Data_Collection_and_Uses.pdfAppendix_M_Differences_Between_NERC-GADS_and_ISO-GADS_Data_Collection_and_Uses1/1/2019
Appendix_N_Changes_to_DRI_from_2018_to_2019.pdfAppendix_N_Changes_to_DRI_from_2018_to_20191/1/2019