A colossal US$22-billion infrastructure project will send Australian sunshine more than 3,100 miles (5,000 km) to Singapore, via high-voltage undersea cables. Opening in 2027, it'll be the largest solar farm and battery storage facility in history.

Australia's Northern Territory has abundant space and sun; Singapore is pressed for space, and looking to transition to renewable power. The two could soon be connected in one of the largest and most ambitious renewable energy projects ever attempted.

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.