Future Multi-Billion Dollar Transmission Upgrades to Boost Queenslands Grid-Scale Solar

Wedoany.com Report-Nov 25, An Oxford Economics Australia report has found electricity construction activity has been at a record high of $19.2 billion over FY24, and with an expected investment of $5 billion a year to FY30, the way forward for large solar projects is clear, especially for Queensland.

A Sydney-headquartered economic forecasting company Oxford Economics Australia report measured electricity construction activity at a record high of $19.2 billion (USD 12.5 billion) over FY24, and with an expected investment of $5 billion a year to FY30, the way forward for solar projects is clear, in particular, for Queensland.

An annual $5 billion investment to decarbonise grid infrastructure is almost 80% higher than the $2.8 billion per annum over the six years up to FY24.

Oxford’s Greening the Grid: the next wave of electricity construction report says investment into the electricity construction sector is driven by the federal government’s target of generating 82% of electricity from renewable sources by 2030.

While the cost of decarbonising the electricity grid is high, Oxford notes the political will is strong and the sector has grown at a compounded rate of 16.8% year on year, and growth will be at a compounded rate of 5% from FY25 to FY30.

Construction of utility-scale solar infrastructure has been constrained by the proliferation of rooftop solar causing a mismatch of supply and demand and negative electricity prices that have reduced the revenue of solar farms, and the appeal of solar farm investment against other sources, the report finds.

“But this is changing – battery storage, both as a component of new solar projects and standalone projects, has allowed new and existing solar farms to sell electricity at prices closer to peak demand periods, increasing their viability,” it says.

“Ongoing transmission work on the Queensland-NSW Interconnector (QNI) upgrades and Central- Hunter Transmission Project will unlock even more solar and wind investment in these zones to service demand in NSW and South-East Queensland.”

Battery project investment will grow from $2.6 billion in FY24 to $4.6 billion in FY25, five times its FY23 level of $912 million.

The report suggests development of renewable energy zones in Queensland will see that state outpace New South Wales (NSW) and become the main hub of solar investment.

“Growth will then slow, as an increased number of batteries in the grid reduces the profit margin available by ‘time-of-use’ arbitrage. These lower returns on investment is expected to see growth in battery construction work slow over the coming years,” the Greening the Grid report says.