March 18 (Reuters) - Electric utility Constellation

Energy Corp ( CEG ) said on Monday it is issuing a corporate

green bond worth $900 million to finance the company's nuclear

energy projects.

Proceeds from the 30-year term offering will help maintain

and expand Constellation's nuclear power generation, the company

said.

Green bonds, a financial instrument specifically designed to

fund projects that deliver a positive environmental impact, have

become increasingly popular with investors looking to invest in

sustainable projects.

The Baltimore, Maryland-based company generates electricity

through its nuclear, hydro, wind and solar generation

facilities, powering more than 16 million homes and businesses

across the United States.