Hour 17 · 2026-05-29
Illustrative clearing — production MMS would use a SCED-class optimiser.
In hour 17, the SMP cleared at R2188.35 / MWh. The marginal offer was Eskom Holdings — OCGT peaker (Generator)'s — the last unit of generation needed to meet demand. By uniform-price rule, every accepted seller was paid R2188.35 / MWh for their share of the 32902 MWh cleared this hour.
See the in-browser verifier to confirm the SMP from the receipt's canonical inputs.
Supply curve · demand intersection
The supply curve (terracotta) is cumulative MWh on the x-axis, offer price on the y-axis. The dashed green line is hourly demand. Where they cross is the SMP.
Accepted awards
| Offer | Party | MWh awarded | Price (R/MWh) |
|---|---|---|---|
| o-17-solar | IPP — solar BW5 (Generator) | 790.0 | R2188.35 |
| o-17-renew-agg | Aggregator — renewables pool | 300.0 | R2188.35 |
| o-17-wind | IPP — wind plant (Generator) | 1212.0 | R2188.35 |
| o-17-coal | Eskom Holdings — coal fleet (Generator) | 30000.0 | R2188.35 |
| o-17-zesa | Cross-border — ZESA interconnect | 200.0 | R2188.35 |
| o-17-ocgt | Eskom Holdings — OCGT peaker (Generator) | 400.0 | R2188.35 |
Show full computation transcript
[clearHour] day=2026-05-29 hour=17 seed=42 [clearHour] tieBreak=price_asc → ts_asc → party_id_asc [clearHour] demand_mw_min=2160000 [clearHour] accept offer=o-17-solar party=gen_ipp_solar_bw5_01 price=38541c volume=47400 cumulative=47400 [clearHour] accept offer=o-17-renew-agg party=agg_renewables_01 price=41503c volume=18000 cumulative=65400 [clearHour] accept offer=o-17-wind party=gen_ipp_wind_01 price=45949c volume=72720 cumulative=138120 [clearHour] accept offer=o-17-coal party=gen_eskom_coal_01 price=83038c volume=1800000 cumulative=1938120 [clearHour] accept offer=o-17-zesa party=cb_zesa_synthetic price=111632c volume=12000 cumulative=1950120 [clearHour] accept offer=o-17-ocgt party=gen_eskom_ocgt_01 price=218835c volume=24000 cumulative=1974120 [clearHour] SMP=218835c marginal=gen_eskom_ocgt_01
Verify from your laptop (terminal):
curl -s /api/clearing/17/replay > receipt.json && npm run verify -- receipt.json
Or in your browser (no install): /clearing/17/verify
Commit this DAM clear to the append-only SHA-256 chain
(dam_cleared event). Best-effort: with no D1 binding bound
locally this degrades to a "not recorded" marker rather than failing.