"Very little can happen without having the utilities involved in the process, " said Ron Pernick, a founder of clean-technology consulting firm Clean Edge.

FORBES: The Answer To The Energy Problem

As environmental concerns grow worldwide, investors have been steadily investing in the sector for the past decade, says Ron Pernick, author of The Cleantech Revolution.

FORBES: Magazine Article

To get a better sense of what "clean tech" is and isn't, Forbes.com spoke with Ron Pernick, the founder of Clean Edge research firm and co-author of The Clean Tech Revolution.

FORBES: Magazine Article

"If they can deliver what they are saying, and you don't even have to make a change in the vehicle, that is a positive check in the column, " says Ron Pernick, a partner at clean-technology research and publishing firm Clean Edge.

FORBES: Magazine Article