The package will back reforms on fiscal policy, regulation and planning as Turkey seeks $68 billion in climate investment by 2030, the bank said.
On Thursday in Antalya, the Asian Infrastructure Investment Bank finalized a record $1.6 billion climate policy financing deal with Turkey, the host of the COP31 conference.
Turkey, a founding member of the AIIB, requires an estimated $68 billion in additional climate investment by 2030, with around half expected from private sources.
The agreement supports implementation of Turkey's Climate Law, covering fiscal policy and financial regulation to scale sustainable finance and accelerate decarbonization across the country of 86 million people.
"This financing represents AIIB's largest climate policy-based financing package to date," said AIIB Chief Investment Officer Konstantin Limitovskiy, underscoring the bank's commitment to Turkey's climate ambitions.
Program targets include helping 225,000 farmers switch to less water-intensive crops by 2028 and designating 50,000 hectares as carbon sinks to combat water scarcity and drought.