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    Annual market statistics reports

    Market information and historical trends

    The Annual Market Statistics report summarizes key market information over the past year and describes historical market trends. You can also find accompanying files which include data in the tables and figures in each report.

    Download our annual market statistics reports and accompanying data files.

    2021 Annual Market Statistics

    Year  2021 2020 2019 2018 2017 2016
    Total AIL (GWh)  85,214 83,115  84,925 85,330 82,572 79,560
    Average AIL (MW)

    9,728

    9,462  9,695 9,741 9,426 9,057
    Maximum AIL (MW)  11,729 11,698  11,471 11,697 11,473 11,458
    Minimum AIL (MW)  7,976 7,579  8,024 7,819 7,600 6,595
    Average system load (MW) 

    6,946

    6844 7,027 7,287 7,220 7,070
    Growth in average AIL (%)  2.8% -2.4%  -0.5% +3.3% +4.1% -0.9%
    Load factor (%) 83% 81% 85% +83.3% +82% +79%