IPP — solar BW5 (Generator)
gen_ipp_solar_bw5_01
Period: 2026-05-29 (single demo day, 24 hours).
Sign convention — energy revenue: positive (credit). CfD: signed (negative when SMP exceeds strike — seller pays buyer). Imbalance/curtailment: negative when seller under-delivers.
illustrative synthetic outturn The Metered and Dev columns are an illustrative synthetic outturn (solar curtailed 25% in the noon hours, otherwise on schedule), modelled here independently of the IDM / balancing forecast-slip residual shown on the shadow-day stages. The two imbalance models are not yet reconciled. A single-source-of-truth fix is on the roadmap.
Did my offer clear, and why? Open the offer-outcomes panel → (per hour: offer price vs SMP, cleared vs offered, inframarginal/marginal/uncleared)
Forecast slipped? Open the IDM re-bid window → (re-bid intraday instead of falling into balancing — shadow-day stage 2)
| Hr | SMP | Sched | Metered illustrative synthetic outturn | Dev illustrative | Curtail | Spot energy | CfD | Imbalance | Net | Mirror |
|---|---|---|---|---|---|---|---|---|---|---|
| 00 | R847.93 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R11 396,50 | R0,00 | −R11 396,50 | mirror-confirmed |
| 01 | R839.99 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R10 999,50 | R0,00 | −R10 999,50 | mirror-confirmed |
| 02 | R848.83 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R11 441,50 | R0,00 | −R11 441,50 | mirror-confirmed |
| 03 | R851.21 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R11 560,50 | R0,00 | −R11 560,50 | mirror-confirmed |
| 04 | R832.05 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R10 602,50 | R0,00 | −R10 602,50 | mirror-confirmed |
| 05 | R850.31 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R11 515,50 | R0,00 | −R11 515,50 | mirror-confirmed |
| 06 | R833.51 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R10 675,50 | R0,00 | −R10 675,50 | mirror-confirmed |
| 07 | R854.47 | 407.0 | 407.0 | 0.00 | 0.00 | R347 769,29 | −R11 723,50 | R0,00 | R336 045,79 | mirror-confirmed |
| 08 | R862.87 | 790.0 | 790.0 | 0.00 | 0.00 | R681 667,30 | −R12 143,50 | R0,00 | R669 523,80 | mirror-confirmed |
| 09 | R842.91 | 1127.0 | 1127.0 | 0.00 | 0.00 | R949 959,57 | −R11 145,50 | R0,00 | R938 814,07 | mirror-confirmed |
| 10 | R851.80 | 1399.0 | 1399.0 | 0.00 | 0.00 | R1 191 668,20 | −R11 590,00 | R0,00 | R1 180 078,20 | mirror-confirmed |
| 11 | R862.87 | 1590.0 | 1192.5 | -397.50 | 397.50 | R1 028 972,48 | −R12 143,50 | −R795 000,00 | R479 071,11 | mirror-confirmed |
| 12 | R856.18 | 1688.0 | 1266.0 | -422.00 | 422.00 | R1 083 923,88 | −R11 809,00 | −R844 000,00 | R499 097,96 | mirror-confirmed |
| 13 | R864.54 | 1688.0 | 1266.0 | -422.00 | 422.00 | R1 094 507,64 | −R12 227,00 | −R844 000,00 | R511 909,66 | mirror-confirmed |
| 14 | R849.56 | 1590.0 | 1590.0 | 0.00 | 0.00 | R1 350 800,40 | −R11 478,00 | R0,00 | R1 339 322,40 | mirror-confirmed |
| 15 | R838.83 | 1399.0 | 1399.0 | 0.00 | 0.00 | R1 173 523,17 | −R10 941,50 | R0,00 | R1 162 581,67 | mirror-confirmed |
| 16 | R847.37 | 1127.0 | 1127.0 | 0.00 | 0.00 | R954 985,99 | −R11 368,50 | R0,00 | R943 617,49 | mirror-confirmed |
| 17 | R1091.95 | 790.0 | 790.0 | 0.00 | 0.00 | R862 640,50 | −R23 597,50 | R0,00 | R839 043,00 | mirror-confirmed |
| 18 | R1081.69 | 407.0 | 407.0 | 0.00 | 0.00 | R440 247,83 | −R23 084,50 | R0,00 | R417 163,33 | mirror-confirmed |
| 19 | R1086.16 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R23 308,00 | R0,00 | −R23 308,00 | mirror-confirmed |
| 20 | R1088.33 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R23 416,50 | R0,00 | −R23 416,50 | mirror-confirmed |
| 21 | R864.37 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R12 218,50 | R0,00 | −R12 218,50 | mirror-confirmed |
| 22 | R869.65 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R12 482,50 | R0,00 | −R12 482,50 | mirror-confirmed |
| 23 | R857.23 | 0.0 | 0.0 | 0.00 | 0.00 | R0,00 | −R11 861,50 | R0,00 | −R11 861,50 | mirror-confirmed |
| Net to seller · 24-hour demo day | R9 154 789,98 | |||||||||
Implied curtailment haircut: 25% — compensated at 75% of the SMP for involuntarily curtailed energy (the generator forgoes one quarter of spot value). Illustrative, basis pending NERSA (RFD 2025-04-29 — citation unverified).
Implied under-delivery penalty: SMP × 1.15 or an R2 000/MWh floor, whichever is higher. The floor binds when the SMP is below R1 739,13/MWh. Illustrative, basis pending NERSA (Trading Rules R2 §07 placeholder).