Noteworthy Glitch in AEMO Operations (Both Electricity and Gas) on Tuesday Afternoon/Evening 10th March 2026

Key Takeaways

• AEMO glitch disrupted NEM and gas market operations
• Incident labeled INC0159810, possibly linked to CHG0108407
• Service status page used for client communications
• Clients received one‑on‑one support during outage
• Issue highlighted need for robust contingency planning

Summary

On 10 March 2026 the Australian Energy Market Operator (AEMO) suffered a significant operational glitch affecting both the National Electricity Market and the eastern Australian gas market. The incident was logged as INC0159810 and is suspected to be linked to change request CHG0108407. AEMO and service providers provided one‑on‑one assistance and continuously updated a public Service Status Page to keep clients informed. The note by Paul McArdle documents the event and preserves a record for future reference.

Pulse Analysis

The Australian Energy Market Operator (AEMO) serves as the backbone of both the National Electricity Market (NEM) and the eastern Australian gas market, coordinating dispatch, balancing, and market settlements for thousands of participants. On the afternoon of 10 March 2026, AEMO experienced a system‑wide glitch that temporarily halted normal data flows and scheduling functions across both electricity and gas platforms. The incident, recorded under the internal reference INC0159810 and suspected to stem from a related change request CHG0108407, exposed a rare convergence of software and data‑integration failures. Such events are uncommon but can cascade quickly given the tightly coupled nature of energy markets.

The immediate fallout was felt by generators, retailers, and large industrial consumers who rely on real‑time price signals and dispatch instructions. With the NEM’s five‑minute trading intervals disrupted, participants faced uncertainty around generation commitments and settlement calculations, while gas shippers encountered delays in nomination updates. AEMO’s operations team, together with third‑party service providers, instituted a dual‑track response: direct one‑on‑one assistance for affected clients and a publicly updated Service Status Page that logged each remediation step. This transparent communication helped mitigate market volatility and preserved confidence among stakeholders.

The glitch underscores the critical need for resilient IT architectures and rigorous change‑management protocols in energy market operators. Regulators may now scrutinize AEMO’s incident‑response framework, prompting investments in redundancy, automated testing, and real‑time monitoring tools. For market participants, the episode serves as a reminder to maintain contingency plans, diversify data sources, and engage proactively with system operators during disruptions. As Australia’s energy transition accelerates, ensuring uninterrupted market operations will be essential to attract investment, support renewable integration, and safeguard supply security.