Hot Startup

Negative-Carbon Gasoline? Cool Planet BioFuels Ready to Road Test

Negative-Carbon Gasoline? Cool Planet BioFuels Ready to Road Test

Derek Mead: January 13, 2012

The startup’s synthetic gasoline is made from low-grade, non-food cellulosic feedstock—but is it really “negative-carbon?” 

Floating the Future of Offshore Wind

Floating the Future of Offshore Wind

Herman K. Trabish: January 6, 2012

A disruptive technology from Principle Power set to sea in November; utility-scale wind’s future may have been aboard.

Silevo Unstealths: Raising the Bar on Silicon Solar Performance

Silevo Unstealths: Raising the Bar on Silicon Solar Performance

Eric Wesoff: October 12, 2011

“It comes down to product differentiation.”

Terrajoule Unstealths: Distributed Power via Solar, Steam and Storage

Terrajoule Unstealths: Distributed Power via Solar, Steam and Storage

Eric Wesoff: September 12, 2011

What’s old is new again as Terrajoule revives an old steam engine technology—stoked with solar power to drive farm and industrial power.

BT Imaging Improves PV Quality With Photoluminescence Imaging

BT Imaging Improves PV Quality With Photoluminescence Imaging

Eric Wesoff: June 1, 2011

A maturing solar industry is incorporating new tools and new quality measures.

Agriculture 2.0: Harvest Power Profits From Biomass

Agriculture 2.0: Harvest Power Profits From Biomass

Eric Wesoff: April 13, 2011

Did you know that Germany has a feed-in tariff for biomass-generated power?

Alion: Stealth CdTe Solar Startup Watch

Alion: Stealth CdTe Solar Startup Watch

Eric Wesoff: March 28, 2011

Using acoustic printing to pattern cadmium telluride on a substrate. Funded by Sequoia Capital.

SiGen and a Crop of Startups Target Thinner Silicon Wafers

SiGen and a Crop of Startups Target Thinner Silicon Wafers

Eric Wesoff: February 24, 2011

No more wire hangers, I mean wire saws. Less kerf loss. Less silicon used. Are 20-micron wafers in reach?

Optiwind’s Innovation in Medium Wind

Optiwind’s Innovation in Medium Wind

Eric Wesoff: January 26, 2011

Medium wind, blowing like a circle around my skull
From the Grand Coulee Dam to the Capitol

The Saudi Arabia of Old Tires

The Saudi Arabia of Old Tires

Michael Kanellos: January 25, 2011

It’s the Story of Garbage! This installment: Lehigh Technologies and the old tire conundrum.

Clarian: Moving Solar to the Mainstream

Clarian: Moving Solar to the Mainstream

Eric Wesoff: January 25, 2011

How does the industry get solar to go mainstream? Lowering the entry price, according to Clarian.

Intematix Simplifies LED Manufacturing, Aims for IPO

Intematix Simplifies LED Manufacturing, Aims for IPO

Michael Kanellos: January 18, 2011

The ChromaLit system separates LED chips into phosphors and chips. An IPO may occur in the next year. Video too.

WaterSmart: The OPower of the Water World

WaterSmart: The OPower of the Water World

Eric Wesoff: January 11, 2011

How much is your home water bill?

Solar Bus Shelters From GoGreenSolar

Solar Bus Shelters From GoGreenSolar

Eric Wesoff: January 10, 2011

A lot of high-tech solar is coming to a street corner near you.