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 d15d470c4a6a9a24.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 a8a882bfffda28c7.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 64a5dec40bed14bf.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 c2d69e7fd374a18f.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 09ceddd4b8e23f70.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 6080e733a9d5e2ee.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 4519db0ecbcd63ed.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 53aeb92b6406fab8.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 521c3ebd63a722f9.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 3b3c0151c599da35.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 55237c7ddeaa8ce7.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 3567538254aae775.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 7ff46adf86691433.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…
#> 
#> # aemo_tbl: AEMO FCAS enablement volumes (DISPATCHLOAD)
#> # Source:   http://nemweb.com.au
#> # Licence:  AEMO Copyright Permissions Notice
#> # Retrieved: 2026-09-19 10:27 UTC 
#> # Rows: 6  Cols: 1
#> 
#>        settlementdate
#> 1 2026-09-19 19:30:00
#> 2 2026-09-19 19:35:00
#> 3 2026-09-19 19:40:00
#> 4 2026-09-19 19:45:00
#> 5 2026-09-19 19:50:00
#> 6 2026-09-19 19:55:00
options(op)
# }