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Israeli company Emefcy lands big-name backers for its Megawatter System that can turn wastewater into clean water and electricity.
Startup Joule lands $70 million in private equity to build larger-scale plants that make diesel fuel directly from sunlight, carbon dioxide, and nutrients in solar panel-like bioreactors.
A proposed federal rule change could help American Indian tribes to develop wind, solar, and geothermal power on their reservations.
On Earth Day, CNET looks at one of the central questions around green tech: how quickly green innovations can be developed and put in place on a large scale.
Start-up Joule Unlimited is on the forefront of using genetic engineering to replace petrofuels, trying to learn from shortcomings of other biofuel technologies.
The California company seeks to raise up to $100 million on the stock market to speed up commercialization of its algae oil for fuels, food, and personal care products.
Biotech start-up receives a patent for a process where genetically engineered cyanobacteria make hydrocarbons directly during growth.
PetroAlgae looks to raise $200 million for algae-growing equipment, although making fuel from algae cost-effectively has proved elusive.
Valero Energy plans to share and develop transportation fuel technology with Algenol Biofuels.
Start-up gets $30 million to build test facility that will create diesel fuel from microbes fed a diet of sunlight and carbon dioxide.