Group items tagged

We have previously discussed a secretive Texas company called EEStor, who are reported to be working on a new type of ultracapacitor that can hold 10x the energy in 1/10th the weight of typical batteries, at a fraction of the cost. They have an agreement to produce caps for Zenn electric cars but to date have not shown any prototypes. This has led some to suspect EEStor as not having the technology they report. Today, however, Lockheed Martin, the major U.S. military equipment manufacturer has announced a partnership agreement with EEStor to develop energy applications.

Here are a couple of pieces that appeared recently in Technology Review: one relates to EEStor's recent announcement with Lockheed Martin and what it means for the company, while the other is a look at a new type of hybrid lead-acid battery with an integrated supercapacitor that claims to last four times longer than conventional lead-acid systems and to perform just as well as nickel-metal hydride systems -- but at a fraction of the cost.

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