International investors will find it easier to buy into China's environmentally-friendly projects after the Bank of China listed a "covered green bond" on the London Stock Exchange on Friday.

The three-year $500 million China Green Covered Bond, the first such bond to be issued by a Chinese entity and secured by onshore assets, offers investors a coupon rate of 1.875 percent.

The structure of covered bond is innovative, giving investors dual recourse: allowing claims over a dedicated "cover pool" of assets, and the usual claim against Bank of China.