The solar farm operated by Phu Yen TTP. Photo by B.Grimm Power. Asian Development Bank provides $186m loan to solar power plant in Vietnam's Phu Yen province The Asian Development Bank (ADB) has provided a $186 million loan to renewable energy firm Phu Yen TTP Joint Stock Company to develop a 257 megawatt (MW) solar power plant in southern Vietnam, marking the country's first certified green loan. Green loans are used to fund new or existing projects that deliver environmental or climate-related benefits. The financing for Phu Yen TTP comprises a $27.9 million loan funded by ADB, a $148.8 million syndicated loan (B loan) funded by commercial banks with ADB as lender of record, and a $9.3 million loan provided by the Leading Asia's Private Infrastructure Fund (LEAP), according to a statement.