The solution
Viet Nam's transport sector accounted for 18% of annual greenhouse-gas emissions, but electric buses faced the usual two-sided launch problem: fleet operators need charging certainty, while chargers need vehicle demand.
In October 2022, ADB mobilized a US$135 million seven-year climate-finance package for VinFast. It included a US$20 million ADB loan, US$87 million in parallel loans, and up to US$28 million of concessional financing.
The package supported Viet Nam's first fully electric public transport bus fleet and first national EV charging network. ADB also attached technical assistance for consumer awareness and STEM participation by women.
What it achieved
Finance the vehicles and plugs together
Why it worked
It solved a deployment dependency, not just a capex shortfall.
Climate-bond certification made the financing legible to outside lenders.
The same sponsor controlled vehicles, manufacturing, and charging, reducing coordination friction.
What can be applied
For networked hardware, finance the complement with the product. Users will not trust buses without chargers, and chargers are weak assets without vehicles to use them.
Aftermath
ADB later described the project as operational with most outcome indicators achieved or on track. The e-buses were operating in Ha Noi, Ho Chi Minh City, and Phu Quoc, helping make electric public transport visible rather than theoretical.
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