WELLINGTON, New Zealand--Electricity generation company Mercury NZ Ltd. said it will sell up to 200 million New Zealand dollars ($130.7 million) of seven-year "green" bonds.

The offer of unsecured fixed-rate bonds, which will open on Aug. 31, comprises NZ$150 million plus up to NZ$50 million oversubscriptions, the company said Friday.

The funds would be used to finance or refinance eligible green projects, Mercury said. The company is rated BBB plus, with a stable outlook, by Standard & Poor's.