A Guide to the Index

The 2015 U.S. Clean Tech Leadership Index ranks the 50 U.S. states and 50 largest metro areas based on more than 100 wide-varying factors documenting presence of minimal-pollution technologies including energy generation and usage.
The CTL Metro Index’s indicators are broken into four broad areas: Green Buildings; Advanced Transportation; Clean Energy and Carbon Management; and Clean-tech Investment, Innovation and Workforce.
Among the handful of sub-categories underlying metro Green Buildings scores are LEED-certified and Energy Star-qualifying projects and square footage per capita. With the 2015 Index, metro areas received additional credit if their respective principal municipality has implemented a building energy benchmarking and disclosure ordinance.
CTL State Index indicators are generally organized into three broad areas: Technology, Policy and Capital. Energy Intelligence and Green Building is a sub-category within the Technology area.

For more on the index rankings, be sure to read “Who’s the Greenest?” by Brad Berton in the August 2015 issue of CPE.