ACCIONA selected for Gippsland transmission project

ACCIONA, a Spanish infrastructure company, has been selected by VicGrid as the development partner for the Gippsland offshore wind transmission project in Victoria. The article provides no detail on project scope, timeline, cost or capacity.

Where this fits

This is a transmission-cost story. Offshore wind cannot reach the grid without dedicated network infrastructure, and that infrastructure must be built before the generation asset turns on. The Gippsland project is one piece of the broader transmission overbuild required to integrate weather-dependent generation across Australia's grid. As renewable capacity expands faster than demand growth, the fixed cost of poles, cables, substations and switchgear is spread over fewer peak-demand hours, raising the effective cost per megawatt-hour. This cost is often invisible in renewable energy announcements because it appears in network bills, not generation contracts. The selection of a European contractor also signals that critical grid infrastructure is being built by foreign firms using imported equipment and supply chains largely outside Australian control.

What it means

Every megawatt of offshore wind requires meters of copper, thousands of tonnes of steel, and years of construction before it can feed power into the eastern seaboard's grid. That transmission asset will sit idle most hours when wind output is low or demand is soft, yet its cost must be recovered. A firm alternative, nuclear power, capable of running at capacity factor above 90 per cent, would need far less redundant network capacity and would offer grid resilience independent of overseas supply chains and foreign developer choices. The Gippsland project advances renewable penetration, but at the cost of systemic dependence on foreign infrastructure partners and higher total system cost than a mixed firm-and-renewable grid would incur.