Phase 1 shadow · synthetic · independent  ·  SAWEM Phase 1 Trading Simulator — explainer-grade, not an MMS.  ·  Trading Rules Round 2 (12 April 2026 v01 draft)
Trading day 2026-05-29 virtual hour 00 Auction state: ACCEPTING gate close in 18h:00m DAM clear → IDM re-clear → Balancing → Settlement
SAWEM

Trader — Phase 1

Three first-class trader flows in Phase 1. None of them touch the live cleared auction.

Wheeling
Bilateral wheeling lane
First-class flow. Schedule a wheeled bilateral to the MO.
Shadow bid
Sandbox-only — no live auction
Recorded in shadow-YYYY-MM-DD namespace.
Shadow log
Compare vs cleared SMP
Side-by-side: your shadow vs the public SMP.
Try the live auction
Will be rejected — see the audit response
Posts a trader offer to /api/offers and renders the Stripe-style bid_rejected card so the central legal-posture defence is visible on screen.

Why a sandbox, not the live order book? Round-2 exclusion of traders is NERSA's central defensive line in the suspended Eskom-traders High Court matter. A shadow bid posted against the live auction would, even anonymised, be a discoverable artifact that Eskom litigators could construe as functional inclusion. The sandbox auction uses a distinct seed namespace and the offer-submit Function rejects any kind=offer from role=trader with bid_rejected · reason=phase1_trader_exclusion.