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Wholesale electricity prices

Source: R/price.R
aemo_price.Rd

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.

Usage

aemo_price(
  region,
  start,
  end,
  interval = c("5min", "30min"),
  market = c("energy", "fcas"),
  intervention = FALSE
)

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; TRUE returns both market and physical runs, with the intervention column 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 TRADINGPRICE column 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)
})
#> Warning: Cache integrity check failed for 7e812257f3b1b363.zip; re-downloading.
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> Warning: Cache integrity check failed for 8f4aee7951bdaa05.zip; re-downloading.
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> Warning: Cache integrity check failed for 3b75629ed92a8a7d.zip; re-downloading.
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> Warning: Cache integrity check failed for 622574dedd5c3c53.zip; re-downloading.
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> Warning: Cache integrity check failed for 857f4e1cbdbb56f0.zip; re-downloading.
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> ℹ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> ✔ Downloading <http://nemweb.com.au/Reports/CURRENT/DispatchIS_Reports/PUBLIC_D…
#> 
#> # aemo_tbl: AEMO 5min energy price NSW1
#> # Source:   http://nemweb.com.au
#> # Licence:  AEMO Copyright Permissions Notice
#> # Retrieved: 2026-08-23 18:16 UTC 
#> # Rows: 6  Cols: 66
#> 
#>        settlementdate runno regionid dispatchinterval intervention      rrp eep
#> 1 2026-08-24 03:20:00     1     NSW1      20260823280            0 62.60320   0
#> 2 2026-08-24 03:25:00     1     NSW1      20260823281            0 45.44000   0
#> 3 2026-08-24 03:30:00     1     NSW1      20260823282            0 57.39007   0
#> 4 2026-08-24 03:35:00     1     NSW1      20260823283            0 60.99437   0
#> 5 2026-08-24 03:40:00     1     NSW1      20260823284            0 61.38036   0
#> 6 2026-08-24 03:45:00     1     NSW1      20260823285            0 62.15683   0
#>        rop apcflag marketsuspendedflag         lastchanged raise6secrrp
#> 1  62.6032       0                   0 2026/08/24 03:15:07         0.04
#> 2    45.44       0                   0 2026/08/24 03:20:07         0.04
#> 3 57.39007       0                   0 2026/08/24 03:25:07         0.04
#> 4 60.99437       0                   0 2026/08/24 03:30:08         0.03
#> 5 61.38036       0                   0 2026/08/24 03:35:00         0.04
#> 6 62.15683       0                   0 2026/08/24 03:40:01         0.04
#>   raise6secrop raise6secapcflag raise60secrrp raise60secrop raise60secapcflag
#> 1         0.04                0          0.04          0.04                 0
#> 2         0.04                0          0.04          0.04                 0
#> 3         0.04                0          0.03          0.03                 0
#> 4         0.03                0          0.03          0.03                 0
#> 5         0.04                0          0.03          0.03                 0
#> 6         0.04                0          0.03          0.03                 0
#>   raise5minrrp raise5minrop raise5minapcflag raiseregrrp raiseregrop
#> 1         0.01         0.01                0      3.6800        3.68
#> 2         0.01         0.01                0      3.4500        3.45
#> 3         0.01         0.01                0      3.3300        3.33
#> 4         0.01         0.01                0      8.6043      8.6043
#> 5         0.01         0.01                0      3.3800        3.38
#> 6         0.01         0.01                0      1.4700        1.47
#>   raiseregapcflag lower6secrrp lower6secrop lower6secapcflag lower60secrrp
#> 1               0         0.01         0.01                0          0.01
#> 2               0         0.01         0.01                0          0.02
#> 3               0         0.01         0.01                0          0.01
#> 4               0         0.01         0.01                0          0.01
#> 5               0         0.01         0.01                0          0.01
#> 6               0         0.01         0.01                0          0.01
#>   lower60secrop lower60secapcflag lower5minrrp lower5minrop lower5minapcflag
#> 1          0.01                 0         0.01         0.01                0
#> 2          0.02                 0         0.01         0.01                0
#> 3          0.01                 0         0.01         0.01                0
#> 4          0.01                 0         0.01         0.01                0
#> 5          0.01                 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        1.51        1.51               0         FIRM            62.60320
#> 2        0.88        0.88               0         FIRM            45.44000
#> 3        0.37        0.37               0         FIRM            57.39007
#> 4        1.05        1.05               0         FIRM            60.99437
#> 5        1.51        1.51               0         FIRM            61.38036
#> 6        1.51        1.51               0         FIRM            62.15683
#>   pre_ap_raise6_price pre_ap_raise60_price pre_ap_raise5min_price
#> 1                0.04                 0.04                   0.01
#> 2                0.04                 0.04                   0.01
#> 3                0.04                 0.03                   0.01
#> 4                0.03                 0.03                   0.01
#> 5                0.04                 0.03                   0.01
#> 6                0.04                 0.03                   0.01
#>   pre_ap_raisereg_price pre_ap_lower6_price pre_ap_lower60_price
#> 1                3.6800                0.01                 0.01
#> 2                3.4500                0.01                 0.02
#> 3                3.3300                0.01                 0.01
#> 4                8.6043                0.01                 0.01
#> 5                3.3800                0.01                 0.01
#> 6                1.4700                0.01                 0.01
#>   pre_ap_lower5min_price pre_ap_lowerreg_price raise1secrrp raise1secrop
#> 1                   0.01                  1.51         0.01         0.01
#> 2                   0.01                  0.88         0.02         0.02
#> 3                   0.01                  0.37         0.02         0.02
#> 4                   0.01                  1.05         0.01         0.01
#> 5                   0.01                  1.51         0.01         0.01
#> 6                   0.01                  1.51         0.02         0.02
#>   raise1secapcflag lower1secrrp lower1secrop lower1secapcflag
#> 1                0            0            0                0
#> 2                0            0            0                0
#> 3                0            0            0                0
#> 4                0            0            0                0
#> 5                0            0            0                0
#> 6                0            0            0                0
#>   pre_ap_raise1_price pre_ap_lower1_price cumul_pre_ap_energy_price
#> 1                0.01                   0                  119512.0
#> 2                0.02                   0                  119500.1
#> 3                0.02                   0                  119500.1
#> 4                0.01                   0                  119508.2
#> 5                0.01                   0                  119516.7
#> 6                0.02                   0                  119524.1
#>   cumul_pre_ap_raise6_price cumul_pre_ap_raise60_price
#> 1                  90.08492                   98.36091
#> 2                  90.11492                   98.39091
#> 3                  90.14492                   98.41091
#> 4                  90.17492                   98.44091
#> 5                  90.21492                   98.47091
#> 6                  90.24492                   98.49091
#>   cumul_pre_ap_raise5min_price cumul_pre_ap_raisereg_price
#> 1                     30.18106                    6621.867
#> 2                     30.18106                    6623.847
#> 3                     30.19106                    6625.707
#> 4                     30.20106                    6631.861
#> 5                     30.21106                    6632.791
#> 6                     30.21106                    6630.881
#>   cumul_pre_ap_lower6_price cumul_pre_ap_lower60_price
#> 1                  46.42483                   123.2265
#> 2                  46.42483                   123.2365
#> 3                  46.42483                   123.2365
#> 4                  46.42483                   123.2365
#> 5                  46.42483                   123.2365
#> 6                  46.42483                   123.2365
#>   cumul_pre_ap_lower5min_price cumul_pre_ap_lowerreg_price
#> 1                     69.52955                    3186.669
#> 2                     69.52955                    3186.849
#> 3                     69.52955                    3186.519
#> 4                     69.52955                    3186.369
#> 5                     69.52955                    3186.679
#> 6                     69.52955                    3187.139
#>   cumul_pre_ap_raise1_price cumul_pre_ap_lower1_price ocd_status mii_status
#> 1                     35.82                      0.33    NOT_OCD    NOT_MII
#> 2                     35.83                      0.33    NOT_OCD    NOT_MII
#> 3                     35.84                      0.33    NOT_OCD    NOT_MII
#> 4                     35.85                      0.33    NOT_OCD    NOT_MII
#> 5                     35.85                      0.33    NOT_OCD    NOT_MII
#> 6                     35.86                      0.33    NOT_OCD    NOT_MII
options(op)
# }