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Understanding out-of-merit dispatch in GB

Viewing Stage 5— Exclude volumes inaccessible to ENCC (short-notice thresholds)

Understanding out-of-merit dispatch in GB

Viewing Stage 5— Exclude volumes inaccessible to ENCC (short-notice thresholds)

Alcoa

Peaker plant · South Wales · ALCOA-1

Total Skip Cost

£13.3K

Skip Cost Rate

£12.81/MWh

£/MWh skipped · all-time

National Rank

115th worst

of 505 units · all technologies

#115/505National

Region Rank

8th worst

of 25 in South Wales · all technologies

#8/25Region

All-time total: £13.3K

£4.0K£3.0K£2.0K£997£0

JunJulAugSepOctJanFebMarAprMayJunJulAug

Incomplete month

Worst 40%5 units

Most skipped (top 25%) Around parity Least skipped (bottom 25%)

AberdarePeaker plant

£101.87/MWh£1.3K

AlcoaPeaker plant

£46.33/MWh£13.3K

SolutiaPeaker plant

£25.15/MWh£612

£21.95/MWh£6.1K

£19.12/MWh£3.4K