Itron expands Ausgrid solar grid management in NSW

Itron has expanded its work with Ausgrid to deploy a low-voltage distributed energy resource management system across the utility's network, helping it manage rooftop solar in eastern Australia.

Ausgrid, which serves the largest electricity distribution area on Australia's east coast, is introducing Itron's IntelliFLEX Low Voltage Distributed Energy Resource Management System as networks in New South Wales face rising volumes of consumer-owned energy devices. Rooftop solar, battery systems and electric vehicles are reshaping demand patterns and creating new operational pressures for distributors.

Rooftop solar installations continue to grow rapidly across the state. About 1 million households and small businesses in New South Wales - roughly a quarter of all homes - have rooftop solar installed, according to the companies.

That growth has increased the risk of minimum system load events, when electricity supply exceeds demand, and raised the prospect of instability if networks cannot respond quickly enough. Distribution businesses are under pressure to improve visibility over low-voltage networks, where much of the disruption from decentralised generation first appears.

Backstop Requirement

Ausgrid's deployment is linked to a regulatory requirement introduced in New South Wales. In December, the distributor, working with the state government and other distribution network service providers, began delivering the NSW Emergency Backstop Mechanism.

The mechanism is a last-resort safeguard against grid reliability risks. It requires distributors to be able, under the direction of the Australian Energy Market Operator, to temporarily reduce or pause rooftop solar exports or generation in emergencies.

For Ausgrid, that means implementing systems to monitor and control connected solar generation in real time. Itron says its software provides that capability while improving visibility over conditions on the low-voltage network.

The system allows operators to identify constraints, monitor the performance of consumer energy resources and respond to changing network conditions in real time. In practical terms, distributors are trying to avoid situations where large volumes of rooftop generation push parts of the network beyond operating limits during periods of low daytime demand.

Long Partnership

The deployment extends the relationship between the two companies, which spans more than 15 years. Their earlier work included Ausgrid's use of Itron's meter data management system.

The current project shifts the focus from billing and data collection to direct network operations. It reflects a broader change in the utility sector, as distributors invest in software tools to manage consumer-owned equipment that sits outside the grid's traditional boundaries but now directly affects its stability.

Australia is one of the clearest examples of that shift. High household solar uptake has made distributed generation a mainstream part of the electricity system, bringing benefits for customers while complicating the task of balancing supply and demand. Batteries and electric vehicles are expected to add further volatility to local networks as they become more widespread.

Utilities are responding by developing systems that can observe and, where rules allow, influence these devices at scale. In New South Wales, the emergency backstop requirement has added urgency by placing a clear obligation on distributors to act when the market operator determines the wider system faces a reliability threat.

Ausgrid has presented the deployment as part of efforts to meet those obligations safely and efficiently. The system is also intended to improve day-to-day network awareness in areas where rooftop solar is already widespread.

Itron described the project as a continuation of its work with the distributor. "Building on more than 15-years of collaboration with Ausgrid, which initially included the deployment of Itron's IEE Meter Data Management System, this project reinforces our shared commitment to advanced low voltage visibility," said Don Reeves, Senior Vice President of Outcomes, Itron.

He added: "By deploying IntelliFLEX LV DERMS, Ausgrid is equipping its network with the technology needed to safely and securely integrate the rapid increase of rooftop solar."