Gary Bettman, commissioner of the National Hockey League, will be at Xcel Energy Center on Thursday morning to announce that the Minnesota Wild's home arena, along with the rest of the RiverCentre complex, is high on sustainability.

The downtown St. Paul entertainment complex, which includes the convention center and Roy Wilkins Auditorium, this year won three of the biggest prizes in the green world: certification from LEED, Green Globes and APEX/ASTM, all organizations that make independent judgments on environmentally-sound construction and operations.

Kathy Ross of the Wild, which manages RiverCentre for the city, said that getting all three certifications is a first for a complex of this sort. And most such honors of this sort go to newly-built structures, not buildings that went up years ago.

Officials say that RiverCentre and Xcel Center recycle 60 percent of its waste, use solar energy and wind power to reduce carbon by more than half, save thousands of gallons of water with faucet aerators, and buy office products and cleaning materials that are environmentally preferable.

Joining Bettman at an 11 a.m. news conference at Xcel will be Mayor Chris Coleman, Wild owner Craig Leopold and RiverCentre general manager Jim Ibister.