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.
Quarterly reports 2023
Weekly monitoring reports 2024
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10/04/2024
Weekly Frequency Report 8 Apriil 2024
31.8 MB -
03/04/2024
Weekly Frequency Report 1 April 2024
31.6 MB -
27/03/2024
Weekly Frequency Report 25 March 2024
31.86 MB -
20/03/2024
Weekly Frequency Report 18 March 2024
31.69 MB -
13/03/2024
Weekly Frequency Report 11 March 2024
31.69 MB -
06/03/2024
Weekly Frequency Report 4 March 2024
31.77 MB -
28/02/2024
Weekly Frequency Report 26 February 2024
31.74 MB -
20/02/2024
Weekly Frequency Report 19 February 2024
31.64 MB -
14/02/2024
Weekly Frequency Report 12 February 2024
31.59 MB -
07/02/2024
Weekly Frequency Report 5 February 2024
31.82 MB -
31/01/2024
Weekly Frequency Report 29 January 2024
31.7 MB -
24/01/2024
Weekly Frequency Report 22 January 2024
31.74 MB -
17/01/2024
Weekly Frequency Report 15 January 2024
31.46 MB -
10/01/2024
Weekly Frequency Report 8 January 2024
31.71 MB -
03/01/2024
Weekly Frequency Report 1 January 2024
31.71 MB
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Weekly monitoring reports 2023
Weekly monitoring reports 2023
-
27/12/2023
Weekly Frequency Report 27 December 2023
31.65 MB -
20/12/2023
Weekly Frequency Report 18 December 2023
31.69 MB -
13/12/2023
Weekly Frequency Report 11 December 2023
31.84 MB -
06/12/2023
Weekly Frequency Report 4 December 2023
31.84 MB -
29/11/2023
Weekly Frequency Report 27 November 2023
31.74 MB -
22/11/2023
Weekly Frequency Report 20 November 2023
31.71 MB -
15/11/2023
Weekly Frequency Report 13 November 2023
31.7 MB -
08/11/2023
Weekly Frequency Report 6 November 2023
31.82 MB -
01/11/2023
Weekly Frequency Report 30 October 2023
45.68 MB -
24/10/2023
Weekly Frequency Report 23 October 2023
45.32 MB -
18/10/2023
Weekly Frequency Report 16 October 2023
45.33 MB -
11/10/2023
Weekly Frequency Report 9 October 2023
31.72 MB -
04/10/2023
Weekly Frequency Report 3 October 2023
31.76 MB -
04/10/2023
Weekly Frequency Report 25 September 2023
31.63 MB -
20/09/2023
Weekly Frequency Report 18 September 2023
31.66 MB -
13/09/2023
Weekly Frequency Report 11 September 2023
31.76 MB -
06/09/2023
Weekly Frequency Report 4 September 2023
31.44 MB -
30/08/2023
Weekly Frequency Report 28 August 2023
31.71 MB -
23/08/2023
Weekly Frequency Report 21 August 2023
31.41 MB -
16/08/2023
Weekly Frequency Report 14 August 2023
31.32 MB
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-
Weekly monitoring reports 2022
-
28/12/2022
Weekly Frequency Report - 28 Dec 2022
31.21 MB -
20/12/2022
Weekly Frequency Report - 19 Dec 2022
31.16 MB -
14/12/2022
Weekly Frequency Report - 12 Dec 2022
31.23 MB -
07/12/2022
Weekly Frequency Report - 5 Dec 2022
31.1 MB -
29/11/2022
Weekly Frequency Report - 28 Nov 2022
31.2 MB -
23/11/2022
Weekly Frequency Report - 21 Nov 2022
31.14 MB -
16/11/2022
Weekly Frequency Report - 14 Nov 2022
31.33 MB -
08/11/2022
Weekly Frequency Report - 7 Nov 2022
31.09 MB -
03/11/2022
Weekly Frequency Report - 31 Oct 2022
31.09 MB -
26/10/2022
Weekly Frequency Report - 24 Oct 2022
30.98 MB -
19/10/2022
Weekly Frequency Report - 17 Oct 2022
31.11 MB -
12/10/2022
Weekly Frequency Report - 10 Oct 2022
32.93 MB -
05/10/2022
Weekly Frequency Report - 4 Oct 2022
32.92 MB -
28/09/2022
Weekly Frequency Report - 26 Sep 2022
32.96 MB -
21/09/2022
Weekly Frequency Report - 19 Sep 2022
33.07 MB -
14/09/2022
Weekly Frequency Report - 12 Sep 2022
33.23 MB -
06/09/2022
Weekly Frequency Report - 5 Sep 2022
33.1 MB -
31/08/2022
Weekly Frequency Report - 29 Aug 2022
32.83 MB -
24/08/2022
Weekly Frequency Report - 22 Aug 2022
32.95 MB -
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 -
08/06/2022
Weekly Frequency Report - 06 Jun 2022
32.9 MB -
01/06/2022
Weekly Frequency Report - 30 May 2022
32.82 MB -
25/05/2022
Weekly Frequency Report - 23 May 2022
32.86 MB -
18/05/2022
Weekly Frequency Report - 16 May 2022
32.79 MB -
11/05/2022
Weekly Frequency Report - 09 May 2022
32.89 MB -
04/05/2022
Weekly Frequency Report - 02 May 2022
32.92 MB -
26/04/2022
Weekly Frequency Report - 26 Apr 2022
32.7 MB -
21/04/2022
Weekly Frequency Report - 19 Apr 2022
32.91 MB -
13/04/2022
Weekly Frequency Report - 11 Apr 2022
32.95 MB -
06/04/2022
Weekly Frequency Report - 04 Apr 2022
33.15 MB -
28/03/2022
Weekly Frequency Report - 28 Mar 2022
33.04 MB -
23/03/2022
Weekly Frequency Report - 21 Mar 2022
32.91 MB -
16/03/2022
Weekly Frequency Report - 14 Mar 2022
32.83 MB -
09/03/2022
Weekly Frequency Report - 07 Mar 2022
32.83 MB -
02/03/2022
Weekly Frequency Report - 28 Feb 2022
32.99 MB -
23/02/2022
Weekly Frequency Report - 21 Feb 2022
32.83 MB -
16/02/2022
Weekly Frequency Report - 14 Feb 2022
32.9 MB -
09/02/2022
Weekly Frequency Report - 07 Feb 2022
32.95 MB -
01/02/2022
Weekly Frequency Report - 31 Jan 2022
32.81 MB -
25/01/2022
Weekly Frequency Report - 24 Jan 2022
32.86 MB -
18/01/2022
Weekly Frequency Report - 17 Jan 2022
32.73 MB -
12/01/2022
Weekly Frequency Report - 10 Jan 2022
32.77 MB -
05/01/2022
Weekly Frequency Report - 03 Jan 2022
32.82 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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Annual frequency data 2023
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Mainland historical annual frequency data
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14/02/2023
Mainland frequency data 2022
33.33 MB -
12/09/2022
Mainland frequency data 2021
31.84 MB -
12/09/2022
Mainland frequency data 2020
32.65 MB -
12/09/2022
Mainland frequency data 2019
31.65 MB -
12/09/2022
Mainland frequency data 2018
33.01 MB -
12/09/2022
Mainland frequency data 2017
30.37 MB -
12/09/2022
Mainland frequency data 2016
33.09 MB -
12/09/2022
Mainland frequency data 2015
33.02 MB -
12/09/2022
Mainland frequency data 2014
32.49 MB -
12/09/2022
Mainland frequency data 2013
32.05 MB -
12/09/2022
Mainland frequency data 2012
31.83 MB -
12/09/2022
Mainland frequency data 2011
31.93 MB -
12/09/2022
Mainland frequency data 2010
31.67 MB
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Tasmania historical annual frequency data
-
14/02/2023
Tasmania frequency data 2022
30.14 MB -
12/09/2022
Tasmania frequency data 2021
29.07 MB -
12/09/2022
Tasmania frequency data 2020
30.21 MB -
12/09/2022
Tasmania frequency data 2019
30.36 MB -
12/09/2022
Tasmania frequency data 2018
29.8 MB -
12/09/2022
Tasmania frequency data 2017
28.47 MB -
12/09/2022
Tasmania frequency data 2016
31.34 MB -
12/09/2022
Tasmania frequency data 2015
33.82 MB -
12/09/2022
Tasmania frequency data 2014
33.6 MB -
12/09/2022
Tasmania frequency data 2013
33.37 MB -
12/09/2022
Tasmania frequency data 2012
33.06 MB -
12/09/2022
Tasmania frequency data 2011
32.51 MB -
12/09/2022
Tasmania frequency data 2010
31.71 MB
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Three year historical trends report
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Archived Three year historical trends reports