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the 100 top companies in greentech, based on "innovation, market potential, commercialization, stakeholder value creation, and media attention or 'buzz

In this report, Greentech Media and the Prometheus Institute for Sustainable Development address the underlying fundamentals that will determine when ocean power technologies will become competitive with other renewable and traditional energy sources, what technologies will bring the industry to that point, and how investment, government policies and power sector buy-in will drive the growth of this industry. While today fewer than 10 MW of ocean power capacity has been installed worldwide, we believe that in six years the industry has the potential to break 1 GW of installed capacity on an annual market size of over $500 million.

The emerging ocean power industry is poised to grow from less than 10 megawatts of capacity worldwide today to more than 1 gigawatt in six years, reaching a market worth more than $500 million annually, according to a report by Greentech Media and the Prometheus Institute scheduled for publication next week.

a small group of scientists are working on a method that will let you keep using gas: make gas into a renewable resource by recycling the carbon dioxide to help create more gas

A 12.6-megawatt system installed by First Solar (NSDQ: FSLR) for Sempra Generation showed that the system can produce electricity at below the price of conventional power in the United States, said Mark Bachman, an equity analyst at Pacific Crest, in a research note Tuesday.

The idea is to create a common set of communication protocols and data formats that utilities and smart-grid start-ups can adhere to.

The benefit of a more intelligent infrastructure is that load can be curtailed as needed and problems spotted more quickly. By flattening out spikes in demand, utilities may not need to build new power plants, which are expensive and opposed in some places for environmental and health reasons.

The two kinds of disruptive clean technologies

In the cleantech market there are a lot of very smart, worthy ideas for energy techs aimed at residential applications:  energy efficiency plays, distributed generation and backup power plays, etc