NESO called a Turn Down event on 18 May 2026, running from 16:00 to 22:00 across 12 half-hour settlement periods. 496.5 MW was procured against a 500.0 MW requirement (99% fill rate), with 4 participants submitting bids. The merit order chart below shows accepted and rejected volumes by participant, sorted by who delivered the most.
Requirement
500.0 MW
Procured
496.5 MW
99% of requirement
Bid Cost
£32.6k
Bids
130 / 153
accepted / total
Participants
4
Accepted Volume by Participant
Aggregated across 12 half-hour periods, sorted by accepted volume
Half-Hour Periods
16:00
16:30
17:00
17:30
18:00
18:30
19:00
19:30
20:00
20:30
21:00
21:30
ProcuredSettledReq: 500.0 MW per period
Requirement vs Procured by Period
Participants
| Participant | Volume | Cost | Avg Price |
|---|---|---|---|
| INFINIS LIMITED | 418.2 MW | £55.2k | £131/MWh |
| OAKTREE POWER LIMITED | 52.6 MW | £6.0k | £115/MWh |
| EQUIWATT LIMITED | 22.8 MW | £3.5k | £155/MWh |
| OCTOPUS ENERGY LIMITED | 2.9 MW177.8 MW rejected | £435 | £150/MWh |