After years of delays, the U.S. offshore wind industry is finally gaining momentum, with new projects being planned along the Atlantic coast.

I was at the Greenbuild conference last year, and my general, unscientific assessment would be this: There are many passionate individuals — true believers — holding down the green building fort and pressing it forward.

The explosion of commercial and residential rooftop solar photovoltaic installations over the past five years has created serious mindshare for distributed energy technologies.

The growing attractiveness of the U.S. renewables sector was again underlined last week, as a new analysis detailed how wind and solar projects in Colorado are set to undercut the cost of existing coal power even when storage costs are included.

Innovation visionaries say electric, self-driving, shared cars will soon revolutionize the way humans move about.

The coming year will make or break U.S. renewable energy markets, as state and regional governments defend their 21st century policies against a Trump administration plan to end competition in the nation’s power markets and subsidize old coal and nuclear plants.

The phrase "net positive" makes me cringe.

As Puerto Rico seeks to repair its decimated electricity system, experts are proposing ways the island can rebuild using better, stronger and cleaner technology that would cut costs, boost resilience and reduce reliance on oil to generate power.

When U.S. Secretary of Energy Rick Perry signed a memorandum of understanding with Saudi Arabia recently to collaborate on technologies to reduce emissions in the kingdom, it was just the latest of many initiatives making the Middle East an attractive place to do green business — with a cautious approach.

Some Western companies see China's upcoming crackdown on imported waste as an opportunity to upgrade their operations and use more recyclables in their own manufacturing, but challenges abound.