Defence is investing seriously in energy independence, from renewable microgrids at established bases to genuinely deployable power for field operations. As reliance on centralised grids and long fuel supply chains is increasingly viewed as an operational vulnerability, deployable and temporary power capability is shifting from a niche logistics function to a core planning consideration.
The Defence Renewable Energy and Energy Security Program is investing $64 million across ten Defence sites, adding 60MW of solar and 25MWh of battery storage.
Microgrid projects at Defence installations are explicitly aimed at reducing reliance on diesel and centralised grid connections.
Deployable power solutions are being designed to scale from small field deployments to large-scale bases using modular architecture.
Energy independence is increasingly framed as a security consideration, not just a cost or emissions one.
Silent-running capability, drawing full power without generator noise, is becoming a specified requirement for some deployed systems.
Defence has traditionally approached power at fixed installations and deployed operations as separate problems, solved with separate tools. That distinction is narrowing. Across both contexts, the same driver is showing up: reliance on a single, centralised power source, whether a distant grid connection or a fuel convoy, is increasingly treated as an operational vulnerability rather than a logistics inconvenience.
At established bases, this has translated into direct investment. The Defence Renewable Energy and Energy Security Program is delivering solar generation and battery storage across ten Defence sites nationally, adding an estimated 60 megawatts of solar capacity and 25 megawatt hours of battery storage, explicitly aimed at reducing reliance on diesel fuel and strengthening energy independence. Microgrid projects at these sites are designed to complement rather than replace existing electrical networks, giving bases the ability to operate independently if grid supply is disrupted.
For deployed and field operations, the shift is toward genuinely portable, modular power systems. Rather than the diesel generator sets that have historically supplied field power, newer deployable solutions combine microturbine or renewable generation with battery storage in a plug and play architecture that can scale from a small forward deployment to a large operating base. Some of these systems are being designed with silent running capability, allowing continuous power draw without the generator noise that has traditionally been a tactical liability.
The common thread across both fixed and deployed contexts is that power is increasingly assessed as a security and continuity question, not purely a cost or emissions one. A single point of failure, whether a damaged grid connection or a disrupted fuel convoy, can materially limit operational capability, and that risk is now being planned against at the design stage rather than managed reactively when it occurs.
For infrastructure partners working with Defence, this points to a widening scope beyond fixed electrical installation. Understanding modular, transportable power systems and the logistics required to deploy and maintain them at distance is becoming as relevant as conventional site-based delivery capability.
This also changes what capability Defence is likely to look for from delivery partners over coming procurement cycles. Experience with hybrid and battery systems in demanding, remote civilian contexts, mining and telecommunications infrastructure in particular, translates directly to the technical challenges involved in deployable and semi-permanent Defence power systems, even though the operating environments and security requirements differ considerably.
