Returns 5-minute dispatch prices or 30-minute trading prices for a NEM region over a specified window. Filters intervention runs by default so the returned prices are the market clearing prices used in settlement.
Source
AEMO NEMweb http://nemweb.com.au, AEMO Copyright Permissions Notice.
Arguments
- region
One of
"NSW1","QLD1","SA1","TAS1","VIC1". Accepts a vector.- start, end
Start and end times (inclusive). Character (parsed as AEST) or
POSIXct.- interval
One of
"5min"(default) or"30min".- market
One of
"energy"(default, returns RRP) or"fcas"(returns the FCAS service RRPs).- intervention
Logical.
FALSE(default) returns only the market pricing run;TRUEreturns both market and physical runs, with theinterventioncolumn preserved.
Value
An aemo_tbl. Key columns include settlementdate
(POSIXct AEST), regionid, rrp (AUD/MWh, energy) or the
FCAS service RRPs (AUD/MW), and intervention.
Details
Timestamps are AEST (UTC+10, no daylight savings) to match AEMO's market clock. See the package-level documentation for the period-ending timestamp convention (a row stamped 00:05 is the 5-minute period ending at 00:05).
Intervention. DISPATCHPRICE contains both market pricing
runs (INTERVENTION = 0) and physical / intervention runs
(INTERVENTION = 1). The default filters to market runs.
Pass intervention = TRUE to get both.
30-minute settlement and the 5MS transition. Before
1 October 2021 the NEM settled on 30-minute trading prices
from TRADINGPRICE (TRADINGIS). On 1 October 2021 five-minute
settlement (5MS) commenced and settlement moved to native
5-minute prices. When interval = "30min":
For the pre-5MS period (
start < 2021-10-01): prices are read from TRADINGIS (TRADINGPRICE).For the post-5MS period: prices are derived by taking the arithmetic mean of the six 5-minute dispatch prices within each 30-minute trading interval, consistent with how AEMO calculates the
TRADINGPRICEcolumn in TradingIS post-5MS.
Data availability. NEMweb Current-directory files retain
the last ~30 days of 5-minute dispatch files. Historical
queries use the Archive daily-rollup files automatically; for
queries older than the Archive window, use
aemo_nemweb_download() with an MMSDM URL directly.
See also
Other price:
aemo_fcas()
Examples
# \donttest{
op <- options(aemo.cache_dir = tempdir())
try({
now <- Sys.time()
p <- aemo_price("NSW1", now - 3600, now)
head(p)
})
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#> # aemo_tbl: AEMO 5min energy price NSW1
#> # Source: http://nemweb.com.au
#> # Licence: AEMO Copyright Permissions Notice
#> # Retrieved: 2026-05-04 19:27 UTC
#> # Rows: 6 Cols: 66
#>
#> settlementdate runno regionid dispatchinterval intervention rrp eep
#> 1 2026-05-05 04:30:00 1 NSW1 20260505006 0 57.51000 0
#> 2 2026-05-05 04:35:00 1 NSW1 20260505007 0 57.51000 0
#> 3 2026-05-05 04:40:00 1 NSW1 20260505008 0 57.51000 0
#> 4 2026-05-05 04:45:00 1 NSW1 20260505009 0 57.51000 0
#> 5 2026-05-05 04:50:00 1 NSW1 20260505010 0 57.51000 0
#> 6 2026-05-05 04:55:00 1 NSW1 20260505011 0 64.24231 0
#> rop apcflag marketsuspendedflag lastchanged raise6secrrp
#> 1 57.51 0 0 2026/05/05 04:25:07 0.04
#> 2 57.51 0 0 2026/05/05 04:30:08 0.04
#> 3 57.51 0 0 2026/05/05 04:35:01 0.04
#> 4 57.51 0 0 2026/05/05 04:40:03 0.04
#> 5 57.51 0 0 2026/05/05 04:45:01 0.04
#> 6 64.24231 0 0 2026/05/05 04:50:02 0.09
#> raise6secrop raise6secapcflag raise60secrrp raise60secrop raise60secapcflag
#> 1 0.04 0 0.03 0.03 0
#> 2 0.04 0 0.03 0.03 0
#> 3 0.04 0 0.03 0.03 0
#> 4 0.04 0 0.03 0.03 0
#> 5 0.04 0 0.03 0.03 0
#> 6 0.09 0 0.04 0.04 0
#> raise5minrrp raise5minrop raise5minapcflag raiseregrrp raiseregrop
#> 1 0.01 0.01 0 3.47 3.47
#> 2 0.02 0.02 0 3.47 3.47
#> 3 0.02 0.02 0 3.60 3.6
#> 4 0.01 0.01 0 3.58 3.58
#> 5 0.01 0.01 0 3.58 3.58
#> 6 0.02 0.02 0 3.66 3.66
#> raiseregapcflag lower6secrrp lower6secrop lower6secapcflag lower60secrrp
#> 1 0 0.01 0.01 0 0.10
#> 2 0 0.01 0.01 0 0.10
#> 3 0 0.01 0.01 0 0.01
#> 4 0 0.01 0.01 0 0.10
#> 5 0 0.01 0.01 0 0.10
#> 6 0 0.01 0.01 0 0.01
#> lower60secrop lower60secapcflag lower5minrrp lower5minrop lower5minapcflag
#> 1 0.1 0 0.01 0.01 0
#> 2 0.1 0 0.01 0.01 0
#> 3 0.01 0 0.01 0.01 0
#> 4 0.1 0 0.01 0.01 0
#> 5 0.1 0 0.01 0.01 0
#> 6 0.01 0 0.01 0.01 0
#> lowerregrrp lowerregrop lowerregapcflag price_status pre_ap_energy_price
#> 1 1.00 1 0 FIRM 57.51000
#> 2 1.51 1.51 0 FIRM 57.51000
#> 3 1.51 1.51 0 FIRM 57.51000
#> 4 1.51 1.51 0 FIRM 57.51000
#> 5 1.00 1 0 FIRM 57.51000
#> 6 1.51 1.51 0 FIRM 64.24231
#> pre_ap_raise6_price pre_ap_raise60_price pre_ap_raise5min_price
#> 1 0.04 0.03 0.01
#> 2 0.04 0.03 0.02
#> 3 0.04 0.03 0.02
#> 4 0.04 0.03 0.01
#> 5 0.04 0.03 0.01
#> 6 0.09 0.04 0.02
#> pre_ap_raisereg_price pre_ap_lower6_price pre_ap_lower60_price
#> 1 3.47 0.01 0.10
#> 2 3.47 0.01 0.10
#> 3 3.60 0.01 0.01
#> 4 3.58 0.01 0.10
#> 5 3.58 0.01 0.10
#> 6 3.66 0.01 0.01
#> pre_ap_lower5min_price pre_ap_lowerreg_price raise1secrrp raise1secrop
#> 1 0.01 1.00 0.03 0.03
#> 2 0.01 1.51 0.03 0.03
#> 3 0.01 1.51 0.04 0.04
#> 4 0.01 1.51 0.03 0.03
#> 5 0.01 1.00 0.03 0.03
#> 6 0.01 1.51 0.04 0.04
#> raise1secapcflag lower1secrrp lower1secrop lower1secapcflag
#> 1 0 0.00 0 0
#> 2 0 0.00 0 0
#> 3 0 0.01 0.01 0
#> 4 0 0.01 0.01 0
#> 5 0 0.01 0.01 0
#> 6 0 0.00 0 0
#> pre_ap_raise1_price pre_ap_lower1_price cumul_pre_ap_energy_price
#> 1 0.03 0.00 111167.2
#> 2 0.03 0.00 111147.7
#> 3 0.04 0.01 111128.2
#> 4 0.03 0.01 111108.8
#> 5 0.03 0.01 111089.3
#> 6 0.04 0.00 111075.6
#> cumul_pre_ap_raise6_price cumul_pre_ap_raise60_price
#> 1 112.3363 109.9298
#> 2 112.3263 109.9298
#> 3 112.3263 109.9298
#> 4 112.3163 109.9298
#> 5 112.3163 109.9298
#> 6 112.3563 109.9398
#> cumul_pre_ap_raise5min_price cumul_pre_ap_raisereg_price
#> 1 36.78 6110.885
#> 2 36.79 6109.375
#> 3 36.80 6107.995
#> 4 36.80 6108.105
#> 5 36.80 6106.995
#> 6 36.81 6107.275
#> cumul_pre_ap_lower6_price cumul_pre_ap_lower60_price
#> 1 15.98546 43.96167
#> 2 15.99546 44.06167
#> 3 16.00546 44.07167
#> 4 16.01546 44.17167
#> 5 16.02546 44.27167
#> 6 16.03546 44.28167
#> cumul_pre_ap_lower5min_price cumul_pre_ap_lowerreg_price
#> 1 21.89203 3392.595
#> 2 21.90203 3392.015
#> 3 21.91203 3392.635
#> 4 21.92203 3393.235
#> 5 21.93203 3393.345
#> 6 21.94203 3393.855
#> cumul_pre_ap_raise1_price cumul_pre_ap_lower1_price ocd_status mii_status
#> 1 46.74 1.67 NOT_OCD NOT_MII
#> 2 46.74 1.67 NOT_OCD NOT_MII
#> 3 46.75 1.68 NOT_OCD NOT_MII
#> 4 46.75 1.69 NOT_OCD NOT_MII
#> 5 46.76 1.70 NOT_OCD NOT_MII
#> 6 46.77 1.70 NOT_OCD NOT_MII
options(op)
# }