Regional Outlook — SA1: Thursday 14 May 2026

The spot price in South Australia sits at $58.30/MWh at 06:05 AEST, against a volatile 24-hour backdrop that ranged from a low of $8.50/MWh through the mid-afternoon wind-heavy period to a peak of $272.81/MWh during the evening ramp around 07:30 AEST. The current price reflects a modest recovery from overnight lows and sits broadly in line with predispatch forecasts for the next two trading periods. Total demand is 1,411.79 MW. The generation mix is overwhelmingly wind-driven: wind is contributing 1,879.41 MW, with battery storage adding 31.66 MW and gas CCGT providing a minimal 41 MW of synchronous support. Gas OCGT output is effectively zero at 0.11 MW, and solar is generating nothing — consistent with overnight conditions and today's forecast of 100% cloud cover across the Adelaide region. Renewable penetration sits at 97.89% and carbon intensity is 0.0103 tCO2/MWh, the lowest level recorded across today's data series and a sharp contrast to the morning-peak readings above 0.33 tCO2/MWh when gas output was substantially higher to meet demand climbing above 1,700 MW.

Predispatch signals a price lift through the morning, with the 07:00 AEST half-hour forecast at approximately $53.86/MWh and the 08:30 AEST period tipped at around $60.91/MWh — broadly stable in the $50–$63/MWh range across the next few hours. Load window data indicates the overnight and early-morning periods from 07:30 AEST onward will offer consistently cheap entry points in the $0–$9/MWh range, with several intervals forecast negative as wind output is expected to remain strong and demand stays suppressed. Weather confirms 100% cloud cover persists today, with a wind potential score of 8.2/10 and temperatures between 15°C and 20.4°C — conditions that will keep heating demand minimal and support sustained wind generation through the day and into tonight.

Two SA-specific market notices remain active and are material for grid engineers. AEMO issued a direction to a participant in SA at 12:58 AEST on 14 May (Market Notice 144079) due to a voltage management requirement, commencing an intervention event from the 13:00 AEST trading interval. That intervention was cancelled at 14:20 AEST (Notice 144081), meaning intervention pricing did not apply. However, the voltage concern that triggered the direction — insufficient synchronous generation to maintain voltage control — is a structural theme for SA on high-wind, low-load days exactly like today, and operators should note this pattern recurred on 6 May under similar conditions (Notice 144050). A non-conformance for Hornsdale Power Reserve unit HPR1 (79 MW, 08:25–08:30 AEST on 14 May, Notice 144076) is also listed as active, though the event itself was brief and is unlikely to have ongoing dispatch implications.

The key risk for today is a repeat voltage intervention as wind generation continues to dominate and the synchronous machine count remains low. AEMO has now intervened on this basis twice in nine days in SA. Grid engineers managing reactive power obligations or synchronous plant availability should treat the voltage constraint as the primary system security consideration for the coming hours, particularly through the 08:00