FCAS enablement volumes by generator unit

Returns the MW enabled for each of the ten Frequency Control Ancillary Services (FCAS) per DUID per 5-minute dispatch interval from DISPATCHLOAD. This is the quantity side of the FCAS market: how much each unit was enabled (dispatched) to provide each service, as distinct from the price returned by aemo_fcas().

Usage

aemo_fcas_enablement(
  duid = NULL,
  start,
  end,
  service = NULL,
  intervention = FALSE
)

Source

AEMO NEMweb DISPATCHIS_Reports, DISPATCHLOAD table.

Arguments

duid: Optional character vector of DUIDs. NULL returns all units. See aemo_units() for the full DUID registry.
start, end: Window (inclusive), character or POSIXct.
service: Optional character vector of service names, e.g. c("raise6sec", "lowerreg"). Case-insensitive. NULL returns all ten services.
intervention: Logical. Default FALSE.

Value

An aemo_tbl with columns settlementdate, duid, and one column per FCAS service (raise1secmw, lower1secmw, raise6secmw, lower6secmw, raise60secmw, lower60secmw, raise5minmw, lower5minmw, raiseregmw, lowerregmw). Values are MW; zero means the unit was not enabled for that service.

Details

Ten services are active since 9 October 2023 when Very Fast (RAISE1SEC / LOWER1SEC) commenced. Before that date only eight services are present; the raise1secmw / lower1secmw columns will be NA for intervals before that date.

Examples

# \donttest{
op <- options(aemo.cache_dir = tempdir())
try({
  now <- Sys.time()
  e <- aemo_fcas_enablement(start = now - 3600, end = now)
  head(e)
})
#> Warning: Cache integrity check failed for 3d68ee95afa8150e.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 7e04a6690826e6ac.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 cfe993541435e59f.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 4b5cbf73e6f00631.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 829b75b548ad2f5f.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 f57d2ebe63c497d8.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 987a3c03aabfd59f.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 9efbd4132ed70868.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 7972a9506feaf872.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 6573637dad592f8a.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 0c39ccd2bb4fdc51.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 cca2b959d5993570.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 f97cba749cf2e79b.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 4322e37732a56d17.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…
#> 
#> # aemo_tbl: AEMO FCAS enablement volumes (DISPATCHLOAD)
#> # Source:   http://nemweb.com.au
#> # Licence:  AEMO Copyright Permissions Notice
#> # Retrieved: 2026-04-28 19:14 UTC 
#> # Rows: 6  Cols: 1
#> 
#>        settlementdate
#> 1 2026-04-29 04:15:00
#> 2 2026-04-29 04:20:00
#> 3 2026-04-29 04:25:00
#> 4 2026-04-29 04:30:00
#> 5 2026-04-29 04:35:00
#> 6 2026-04-29 04:40:00
options(op)
# }