Hour 10 · 2026-05-29
Illustrative clearing — production MMS would use a SCED-class optimiser.
In hour 10, the SMP cleared at R837.18 / MWh. The marginal offer was Eskom Holdings — coal fleet (Generator)'s — the last unit of generation needed to meet demand. By uniform-price rule, every accepted seller was paid R837.18 / MWh for their share of the 31000 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-10-renew-agg | Aggregator — renewables pool | 300.0 | R837.18 |
| o-10-solar | IPP — solar BW5 (Generator) | 1399.0 | R837.18 |
| o-10-wind | IPP — wind plant (Generator) | 1633.0 | R837.18 |
| o-10-coal | Eskom Holdings — coal fleet (Generator) | 27668.0 | R837.18 |
Show full computation transcript
[clearHour] day=2026-05-29 hour=10 seed=42 [clearHour] tieBreak=price_asc → ts_asc → party_id_asc [clearHour] demand_mw_min=1860000 [clearHour] accept offer=o-10-renew-agg party=agg_renewables_01 price=38482c volume=18000 cumulative=18000 [clearHour] accept offer=o-10-solar party=gen_ipp_solar_bw5_01 price=39287c volume=83940 cumulative=101940 [clearHour] accept offer=o-10-wind party=gen_ipp_wind_01 price=45081c volume=97980 cumulative=199920 [clearHour] accept offer=o-10-coal party=gen_eskom_coal_01 price=83718c volume=1660080 cumulative=1860000 [clearHour] SMP=83718c marginal=gen_eskom_coal_01
Verify from your laptop (terminal):
curl -s /api/clearing/10/replay > receipt.json && npm run verify -- receipt.json
Or in your browser (no install): /clearing/10/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.