Massive planned US duties on solar panels made in Southeast Asia could be a chance for the region to ramp up its own long-stalled energy transition, experts say. Earlier this month, Washington announced plans for hefty duties on solar panels made in Cambodia, Vietnam, Thailand and Malaysia. The levies follow an investigation, launched before US President Donald Trump took office, into "unfair practices” in the countries, particularly by Chinese-headquartered firms. If approved next month, they will pile upon tariffs already imposed by the Trump administration, including blanket 10-per cent levies for most countries, and 145 per cent on Chinese-made goods.