Here's a list, not sure if it's complete, of the proposed smart cities: Some cities that have participated in the competition include: 

Almere, Bilbao, Bologna, Brussels, Glasgow, Milan, New York, Palermo, Renca, and Rome.

Some other smart cities in the United States include: 

Dallas, Texas

Chicago, Illinois

Denver, Colorado

Seattle, Washington

Charlotte, North Carolina

San Francisco, California

Washington, DC

Boston, Massachusetts

San Jose, California

Miami, Florida