Frequency and time deviation monitoring
AEMO is responsible under the National Electricity Rules (NER) for ensuring that the power system is operated in a safe, secure and reliable manner. As part of this obligation, AEMO is required to maintain power system frequency and time error to within the limits specified in the frequency operating standards determined for mainland National Electricity Market (NEM) regions and Tasmania by the Reliability Panel.
The frequency and time deviation monitoring reference guide summarises the calculation processes.
Weekly monitoring reports 2022
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17/08/2022
Weekly Frequency Report - 15 Aug 2022
32.88 MB -
09/08/2022
Weekly Frequency Report - 08 Aug 2022
32.94 MB -
03/08/2022
Weekly Frequency Report - 01 Aug 2022
32.87 MB -
27/07/2022
Weekly Frequency Report - 25 Jul 2022
32.88 MB -
20/07/2022
Weekly Frequency Report - 19 Jul 2022
32.8 MB -
12/07/2022
Weekly Frequency Report - 11 Jul 2022
32.94 MB -
06/07/2022
Weekly Frequency Report - 04 Jul 2022
32.75 MB -
22/06/2022
Weekly Frequency Report - 27 Jun 2022
32.94 MB -
22/06/2022
Weekly Frequency Report - 20 Jun 2022
32.88 MB -
15/06/2022
Weekly Frequency Report - 14 Jun 2022
33 MB
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Weekly monitoring reports 2021
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27/12/2021
Weekly Frequency Report - 27 Dec 2021
32.84 MB -
20/12/2021
Weekly Frequency Report - 20 Dec 2021
32.81 MB -
14/12/2021
Weekly Frequency Report - 13 Dec 2021
32.86 MB -
07/12/2021
Weekly Frequency Report - 6 Dec 2021
32.84 MB -
29/11/2021
Weekly Frequency Report - 29 Nov 2021
32.8 MB -
24/11/2021
Weekly Frequency Report - 22 Nov 2021
32.8 MB -
17/11/2021
Weekly Frequency Report - 15 Nov 2021
32.85 MB -
11/11/2021
Weekly Frequency Report - 08 Nov 2021
33.04 MB -
03/11/2021
Weekly Frequency Report - 01 Nov 2021
32.91 MB -
26/10/2021
Weekly Frequency Report - 25 Oct 2021
32.86 MB -
19/10/2021
Weekly Frequency Report - 18 Oct 2021
32.99 MB -
14/10/2021
Weekly Frequency Report - 11 Oct 2021
33.01 MB -
06/10/2021
Weekly Frequency Report - 05 Oct 2021
32.76 MB -
27/09/2021
Weekly Frequency Report - 27 Sep 2021
32.96 MB -
22/09/2021
Weekly Frequency Report - 20 Sep 2021
32.79 MB -
14/09/2021
Weekly Frequency Report - 13 Sep 2021
32.92 MB -
08/09/2021
Weekly Frequency Report - 06 Sep 2021
33.08 MB -
01/09/2021
Weekly Frequency Report - 30 August 2021
32.92 MB -
25/08/2021
Weekly Frequency Report - 23 August 2021
32.93 MB -
18/08/2021
Weekly Frequency Report - 16 August 2021
32.97 MB -
11/08/2021
Weekly Frequency Report - 09 August 2021
32.87 MB -
04/08/2021
Weekly Frequency Report - 02 August 2021
32.88 MB -
28/07/2021
Weekly Frequency Report - 26 July 2021
32.96 MB -
21/07/2021
Weekly Frequency Report - 19 July 2021
32.9 MB -
14/07/2021
Weekly Frequency Report - 12 July 2021
32.74 MB -
07/07/2021
Weekly Frequency Report - 05 July 2021
32.93 MB -
30/06/2021
Weekly Frequency Report - 28 June 2021
32.85 MB -
24/06/2021
Weekly Frequency Report - 21 June 2021
32.88 MB -
16/06/2021
Weekly Frequency Report - 15 June 2021
32.93 MB -
09/06/2021
Weekly Frequency Report - 07 June 2021
33.17 MB -
02/06/2021
Weekly Frequency Report - 31 May 2021
32.89 MB -
26/05/2021
Weekly Frequency Report - 24 May 2021
32.92 MB -
19/05/2021
Weekly Frequency Report - 17 May 2021
33.02 MB -
12/05/2021
Weekly Frequency Report - 10 May 2021
33.06 MB -
05/05/2021
Weekly Frequency Report - 3 May 2021
32.96 MB -
28/04/2021
Weekly Frequency Report - 26 April 2021
32.97 MB -
21/04/2021
Weekly Frequency Report - 19 Apr 2021
33.13 MB -
14/04/2021
Weekly Frequency Report - 12 April 2021
32.92 MB -
08/04/2021
Weekly Frequency Report - 06 April 2021
32.72 MB -
31/03/2021
Weekly Frequency Report - 29 March 2021
32.89 MB -
23/03/2021
Weekly Frequency Report - 22 March 2021
32.95 MB -
17/03/2021
Weekly Frequency Report - 15 March 2021
33.03 MB -
09/03/2021
Weekly Frequency Report - 08 March 2021
33.04 MB -
03/03/2021
Weekly Frequency Report - 01 March 2021
32.92 MB -
24/02/2021
Weekly Frequency Report - 22 February 2021
32.89 MB -
16/02/2021
Weekly Frequency Report - 15 February 2021
32.98 MB -
10/02/2021
Weekly Frequency Report - 08 February 2021
33.07 MB -
03/02/2021
Weekly Frequency Report - 01 February 2021
32.92 MB -
29/01/2021
Weekly Frequency Report - 25 January 2021
32.99 MB -
20/01/2021
Weekly Frequency Report - 18 January 2021
33.07 MB -
14/01/2021
Weekly Frequency Report - 11 January 2021
32.81 MB -
07/01/2021
Weekly Frequency Report - 04 January 2021
32.93 MB
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Weekly monitoring reports 2020
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31/12/2020
Weekly Frequency Report - 29 December 2020
32.96 MB -
24/12/2020
Weekly Frequency Report - 22 December 2020
33.07 MB -
16/12/2020
Weekly Frequency Report - 14 December 2020
33.14 MB -
09/12/2020
Weekly Frequency Report - 07 December 2020
33.07 MB -
02/12/2020
Weekly Frequency Report - 30 November 2020
33.09 MB -
24/11/2020
Weekly Frequency Report - 23 November 2020
33.04 MB -
17/11/2020
Weekly Frequency Report - 16 November 2020
33.16 MB -
11/11/2020
Weekly Frequency Report - 09 November 2020
30.48 MB -
04/11/2020
Weekly Frequency Report - 02 November 2020
42.13 MB -
30/10/2020
Weekly Frequency Report - 26 October 2020
30.58 MB -
22/10/2020
Weekly Frequency Report - 19 October 2020
30.75 MB -
13/10/2020
Weekly Frequency Report - 12 October 2020
30.69 MB -
07/10/2020
Weekly Frequency Report - 06 October 2020
30.68 MB -
01/10/2020
Weekly Frequency Report - 28 September 2020
30.88 MB -
16/09/2020
Weekly Frequency Report - 14 September 2020
30.71 MB -
23/09/2020
Weekly Frequency Report - 21 September 2020
30.75 MB -
09/09/2020
Weekly Frequency Report - 07 September 2020
30.72 MB -
02/09/2020
Weekly Frequency Report - 31 August 2020
30.61 MB -
26/08/2020
Weekly Frequency Report - 24 August 2020
30.63 MB -
18/08/2020
Weekly Frequency Report - 17 August 2020
30.55 MB -
05/08/2020
Weekly Frequency Report - 03 August 2020
30.66 MB -
12/08/2020
Weekly Frequency Report - 10 August 2020
30.48 MB -
29/07/2020
Weekly Frequency Report - 27 July 2020
30.69 MB -
21/07/2020
Weekly Frequency Report - 20 July 2020
30.74 MB -
14/07/2020
Weekly Frequency Report - 13 July 2020
30.59 MB -
08/07/2020
Weekly Frequency Report - 06 July 2020
30.61 MB -
01/07/2020
Weekly Frequency Report - 29 June 2020
23.58 MB -
23/06/2020
Weekly Frequency Report - 22 June 2020
23.64 MB -
16/06/2020
Weekly Frequency Report - 15 June 2020
23.66 MB -
11/06/2020
Weekly Frequency Report - 09 June 2020
22.09 MB -
03/06/2020
Weekly Frequency Report - 01 June 2020
23.68 MB -
27/05/2020
Weekly Frequency Report - 25 May 2020
23.73 MB -
20/05/2020
Weekly Frequency Report - 18 May 2020
23.64 MB -
12/05/2020
Weekly Frequency Report - 11 May 2020
23.68 MB -
06/05/2020
Weekly Frequency Report - 4 May 2020
23.67 MB -
29/04/2020
Weekly Frequency Report - 27 April 2020
23.69 MB -
24/04/2020
Weekly Frequency Report - 20 April 2020
23.71 MB -
16/04/2020
Weekly Frequency Report - 14 April 2020
23.74 MB -
08/04/2020
Weekly Frequency Report - 6 April 2020
23.75 MB -
02/04/2020
Weekly Frequency Report - 30 March 2020
23.7 MB -
25/03/2020
Weekly Frequency Report - 23 March 2020
23.7 MB -
18/03/2020
Weekly Frequency Report - 16 March 2020
23.75 MB -
11/03/2020
Weekly Frequency Report - 9 March 2020
23.68 MB -
04/03/2020
Weekly Frequency Report - 2 March 2020
23.66 MB -
26/02/2020
Weekly Frequency Report - 24 February 2020
23.48 MB -
18/02/2020
Weekly Frequency Report - 17 February 2020
23.02 MB -
12/02/2020
Weekly Frequency Report - 10 February 2020
34.66 MB -
05/02/2020
Weekly Frequency Report - 03 February 2020
34.64 MB -
28/01/2020
Weekly Frequency Report - 28 January 2020
23.31 MB -
22/01/2020
Weekly Frequency Report - 20 January 2020
23.04 MB -
15/01/2020
Weekly Frequency Report - 13 January 2020
22.94 MB -
08/01/2020
Weekly Frequency Report - 6 January 2020
23.13 MB
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Three year historical trends report
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Archived Three year historical trends reports