I’ve been in touch with the fellow in Italy I mentioned earlier on my piece about high-altitude wind power, in which I expressed concern that the levelized cost of energy for his concept (KiteGen) wouldn’t be competitive with other energy …
Author: craigshields
Take a COOL Guess – the Fun Quiz on Clean Energy. Today’s Topic: Efficiency in Wind Turbines
Question: In physics, the Betz Limit is the top theoretic percentage of kinetic energy that can be extracted from a moving fluid, e.g., wind. It’s based on the fact that, if you took it all, i.e., stopped the wind dead, …
Chevron Will Not Clean Up Ecuador Anytime Soon
Over the past few years, I’ve written several articles calling out Chevron’s nauseating behavior in defiling the rain forests and people of Ecuador. In many such posts, I’ve speculated that they’d still be fighting against the world justice system long after …
HAWP – High-Altitude Wind Power
We don’t hear as much about high-altitude wind as we did a few years ago, though the subject has not completely disappeared. There is no doubt that the wind resources a thousand feet or so above the Earth’s surface are …
From Guest Blogger Julian Hooks: Protecting the Environment with Fleet Management Systems
Managing a fleet of vehicles is already a daunting task with all the requirements necessary to make it work. However, another thing that fleet management companies consider when they outfit their vehicles with the latest technology is how they can …
In Most Circles, the Concepts of Clean Energy and Sustainability Are Only Somewhat Interesting
A friend in England and I were just talking about how easy it is to miss subtle cues in dealing with others, and thus irritate the people around us. I noted where I frequently screw up with people in general, …
Even When CleanTech Ideas Are Asinine, It’s Sometimes Hard to be Blunt
I think we’ve all been in the position of being asked for an opinion on something we think is terrible, but hesitating to answer the question truthfully. Here’s one every man fears: “Does this dress make me look fat?” In …
Even When CleanTech Ideas Are Asinine, It’s Sometimes Hard to be Blunt Read More »
Aeroponics, Fabulous Solution for Sustainable Gardening, Could Be Even Better
I ran into a fellow the other day who distributes the “Tower Garden,” a device that uses the principle of aeroponics to enable consumers, restaurateurs, and even grocery stores to grow vegetables quickly, effortlessly, and with far less carbon footprint …
Aeroponics, Fabulous Solution for Sustainable Gardening, Could Be Even Better Read More »
Concept in Hydrokinetics
I awakened this morning to an interesting question in my inbox from frequent commenter and 2GreenEnergy supporter Brain McGowan, who asked: What’s your take on this hydrokinetic device? Coincidentally, a colleague of mine showed me an extremely similar device about six …
From Guest Blogger Christine Rudolph: Climate Change Can Bring Unwelcome Pests
With the climatic conditions of planet earth rapidly changing, changing humidity levels, global warming, extreme weather conditions and many other such events are shaping earth’s current climate. All of these changing factors have influenced all forms of life on earth. …
From Guest Blogger Christine Rudolph: Climate Change Can Bring Unwelcome Pests Read More »
