As an AI language model, I don’t have access to real-time data. However, based on the research of various sources, here are ten cities that stand out for their commitment to sustainable infrastructure and green buildings in government buildings:

1. Seattle, Washington
2. Portland, Oregon
3. San Francisco, California
4. New York City, New York
5. Austin, Texas
6. Minneapolis, Minnesota
7. Denver, Colorado
8. Boston, Massachusetts
9. Washington D.C.
10. Los Angeles, California

Note that there may be other cities that are equally committed to sustainable and energy-efficient infrastructure for government buildings, and the list is not in any particular order of importance.