Australia’s electricity system is increasingly being shaped by the adoption of grid-forming inverters, a technology that allows batteries to actively stabilize power networks, with new data indicating they are included in roughly 74 percent of the country’s planned large-scale storage capacity.

The figure relates to a pipeline of about 33.2 gigawatts of battery projects within the National Electricity Market, the interconnected system that supplies power across eastern and southern Australia.

What is confirmed is that a substantial majority of these proposed installations are designed to use grid-forming inverters rather than older grid-following systems, marking a shift in how storage assets are expected to interact with the grid.

Grid-forming inverters differ from conventional designs by providing voltage and frequency control, functions historically delivered by coal, gas, or hydro generators.

This capability is becoming increasingly important as Australia accelerates the retirement of fossil fuel plants and replaces them with renewable generation such as wind and solar, which do not inherently provide the same stabilizing services.

The growing share of grid-forming technology in project pipelines signals a structural change rather than a marginal upgrade.

Developers appear to be anticipating future system requirements, where batteries will not only store energy but also act as foundational infrastructure for grid stability.

This aligns with regulatory and market signals that have begun to reward fast-response and system-strength services.

Recent project announcements and procurement processes reinforce this direction.

Several large battery developments under construction or close to financial commitment have specified grid-forming capabilities as a core requirement.

In some cases, network operators have explicitly required the technology to address system strength shortfalls in regions with high renewable penetration.

However, not all elements of the pipeline are equally advanced.

What remains unclear is how many of the proposed projects will reach completion on current timelines, and whether all will retain their original technical specifications as costs, standards, and regulatory frameworks evolve.

Early-stage proposals in particular may change design before construction.

There are also open questions about interoperability and system-wide coordination.

While grid-forming inverters can provide stabilizing services, their effectiveness depends on how they are configured and integrated across the network.

Managing multiple such systems at scale introduces new operational challenges for grid operators.

Even with those uncertainties, the direction of travel is evident.

The dominance of grid-forming technology in planned battery capacity reflects a broader transition in the architecture of the electricity system, where stability is increasingly delivered by power electronics rather than traditional rotating machines.

The pace at which these projects move from proposal to operation will determine how quickly that transition is realized.