The Australia-Asia PowerLink project, led by Australia's Sun Cable, plans to create a mammoth "Powell Creek Solar Precinct" on 12,000 hectares (29650 ac) of arid land about 800 km (500 miles) south of Darwin. The site, chosen because it's one of the most consistently sunny places on Earth, would be home to a mind-boggling 17-20 gigawatts of peak solar power generation and some 36-42 GWh of battery storage.
To give you a sense of scale, that's nearly 10 times the size of the world's current largest solar power installation, the 2.245-GW Bhadia Solar Park in India, and more than 30 times more energy storage than the last "world's biggest battery" project we covered in February. It's a bit big.
Not all that long ago spending more than $20 billion on a first of its kind project was considered completely unreasonable. Today, $20 billion is a rounding error compared to the quantities spent on stimulus.
The market for High Voltage Direct Current lines has been growing for more than five years. The first report of a feasibility study for an Australia - Indonesia connector is from 2016.