Phase 1 shadow · synthetic · independent  ·  SAWEM Phase 1 Trading Simulator — explainer-grade, not an MMS.  ·  Built from the publicly available Trading Rules; Round 2 not yet gazetted
Trading day 2026-05-29 virtual hour 00 Auction state: ACCEPTING gate close in 18h:00m DAM clear → IDM re-clear → Balancing → Settlement
SAWEM
Public market monitor

Cleared prices & volumes — 2026-05-29

No login. Aggregates carry differentially-private Laplace noise (ε = 1, k ≥ 5). The marginal-party column shows a technology bucket only (coal/gas-peaker/wind/solar/storage). Raw participant identity is suppressed when fewer than 5 sellers cleared in the hour. Source data: CSV · JSON  ·  low-bandwidth (text-only)

Scope: single SA bidding zone (no nodal/zonal coupling). Every supply tier is domestic; a live SAPP cross-border-import scenario stays out of scope for this demo.

English: Today's cleared prices — updated every hour
isiZulu: Today's cleared prices (translation under review)
Afrikaans: Vandag se geklaarde pryse — elke uur bygewerk

All 24 cleared hours

00
R848
01
R840
02
R849
03
R851
04
R832
05
R850
06
R834
07
R854
08
R863
09
R843
10
R852
11
R863
12
R856
13
R865
14
R850
15
R839
16
R847
17
R1092
18
R1082
19
R1086
20
R1088
21
R864
22
R870
23
R857

Hour-by-hour cleared price (SMP)

Average across the 24-hour day: R890.61/MWh

Hour 0: R847.93/MWh · marginal tech: suppressed (k<5)Hour 1: R839.99/MWh · marginal tech: suppressed (k<5)Hour 2: R848.83/MWh · marginal tech: suppressed (k<5)Hour 3: R851.21/MWh · marginal tech: suppressed (k<5)Hour 4: R832.05/MWh · marginal tech: suppressed (k<5)Hour 5: R850.31/MWh · marginal tech: suppressed (k<5)Hour 6: R833.51/MWh · marginal tech: suppressed (k<5)Hour 7: R854.47/MWh · marginal tech: suppressed (k<5)Hour 8: R862.87/MWh · marginal tech: suppressed (k<5)Hour 9: R842.91/MWh · marginal tech: suppressed (k<5)Hour 10: R851.80/MWh · marginal tech: suppressed (k<5)Hour 11: R862.87/MWh · marginal tech: suppressed (k<5)Hour 12: R856.18/MWh · marginal tech: suppressed (k<5)Hour 13: R864.54/MWh · marginal tech: suppressed (k<5)Hour 14: R849.56/MWh · marginal tech: suppressed (k<5)Hour 15: R838.83/MWh · marginal tech: suppressed (k<5)Hour 16: R847.37/MWh · marginal tech: suppressed (k<5)Hour 17: R1091.95/MWh · marginal tech: storageHour 18: R1081.69/MWh · marginal tech: storageHour 19: R1086.16/MWh · marginal tech: suppressed (k<5)Hour 20: R1088.33/MWh · marginal tech: suppressed (k<5)Hour 21: R864.37/MWh · marginal tech: suppressed (k<5)Hour 22: R869.65/MWh · marginal tech: suppressed (k<5)Hour 23: R857.23/MWh · marginal tech: suppressed (k<5)06121823

Bar height = SMP relative to peak hour.

Hour-by-hour cleared volume (MWh, noisy)

Hour 0: 21,999 MWh (noisy)Hour 1: 22,000 MWh (noisy)Hour 2: 22,001 MWh (noisy)Hour 3: 22,001 MWh (noisy)Hour 4: 22,002 MWh (noisy)Hour 5: 28,000 MWh (noisy)Hour 6: 28,000 MWh (noisy)Hour 7: 27,996 MWh (noisy)Hour 8: 30,999 MWh (noisy)Hour 9: 30,999 MWh (noisy)Hour 10: 31,000 MWh (noisy)Hour 11: 31,000 MWh (noisy)Hour 12: 30,999 MWh (noisy)Hour 13: 31,000 MWh (noisy)Hour 14: 31,000 MWh (noisy)Hour 15: 30,999 MWh (noisy)Hour 16: 31,000 MWh (noisy)Hour 17: 36,000 MWh (noisy)Hour 18: 36,000 MWh (noisy)Hour 19: 35,998 MWh (noisy)Hour 20: 36,001 MWh (noisy)Hour 21: 26,000 MWh (noisy)Hour 22: 26,000 MWh (noisy)Hour 23: 25,998 MWh (noisy)06121823

Verify the cleared price for any hour from your laptop (or open the in-browser verifier at /clearing/18/verify):

curl -s /api/clearing/18/replay > receipt.json
npm run verify -- receipt.json

No real money. Trader-role bid submissions are rejected with bid_rejected · reason=phase1_trader_exclusion. The live distributor is still Eskom Distribution as of 2026-05-29; NEDCSA (the planned Eskom Holdings subsidiary) is scheduled for 2027 stand-up (SAWEM Reference §06).