NERC Generating Availability Reports
NERC GADS data are compiled annually and reported in the Generating Availability
Report (GAR) and its accompanying summary statistical brochure. GAR presents data
for five individual years and for a five-year average with generating unit availability
statistics provided on both a capacity weighted and non-weighted basis.
NERC GADS Services produces a Historical Availability Statistics (HAS) report. HAS
provides annual performance information starting from 1982 through the most current
year for the same groups of units in the traditional GAR reports. HAS includes annual,
five-year, ten-year and multi-year interval reports for each of 63 generator unit
groups. GAR and HAS are combined into one self-expanding program. These Windows-based
programs are free to all interested parties.
The documents can be downloaded from