It’s a persistent global conundrum: Can policymakers close coal mines and power plants without ruining local economies in the process?

In August, a delegation of Vietnamese officials looking to answer that question took the two-hour drive east from Melbourne into the Latrobe Valley. Bundled against the Australian winter, they sped past the cooling towers of the Yallourn power station and the open-cut mines near Morwell, vestiges of the region’s rapidly dying industry. The 18 members of parliament visited a new battery facility built on the site of a now-defunct coal-fired power station, and met with local leaders to discuss their approach.