Climate Capitalism

Renewable Energy

Microsoft’s Futurist promotes the traveling wave reactor as a possible 21 Century green energy source

by John Muir on Jun.24, 2009, under Nuclear, Renewable Energy

Peter Henderson of Reuters reports on Microsoft futurist Craig Mundie.  Mundie promotes conservation but also predicts that nuclear power will play a major role in meeting 21st century “green” energy needs.

Mundie mentions traveling wave reactors which is a sub type of breeder reactors.  Also see Adam Smith’s December, 8th, 2008 post: IFR Technology, the Holy Grail of Clean Energy? about the related Integral Fast Reactors (IFR.)  Breader reactors are still largely theoretical, but do promise to help solve another 21st Century problem… what to do with all that 20th century nuclear waste.

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How viable is algae as a fuel source?

by John Muir on Jun.15, 2009, under Biodiesel, Renewable Energy

I was curious to learn a little more about the state algae as a sustainable source for bio-diesel.   I’d heard it was very efficient source of oil, especially compared to agricultural mainstays like corn and soybeans. I’d also heard claims that it could grow in places less desirable than Iowa such as raw sewage or even space.

A few things I did learn:

Problems

There are some challenges using algae as a economically viable fuel source.  Here is a quick summary of what I found:

From: http://www.oilgae.com/blog/2006/10/three-big-problems-with-algae.html

  • Energy intensive to harvest
  • Naturally occurring (less-oil rich) species of algae will crowd out preferred species in open-pond systems
  • Cost of mitigating potential ground-water contamination
From: http://www.oakhavenpc.org/cultivating_algae.htm which sites the final report from the Aquatic Species Program at the National Renewable Energy Laboratory:
  • In a open pond design, since only the top 1/4 in of water in a pond will receive enough light, algea production, like any other land based crop, is limited by surface area.
  • Optimum production requires consitent tempatures. Even sun-rich locations like New Mexico had problems due to low night-time temperatures.
  • Lab cultures did not always grow in outside ponds.

Promise

I found lots of referrences to the Ft. Collins, based company Solix Biofuels which has a promising method to produce oil from algea at a production scale including a bioreactor at the New Belgian Brewery, makers of Fat Tire (see: earth2tech.com article by Katie Fehrenbacher.)
I also found a lot of talk about closed photobioreactors, which get around some of the problems of the open pond designs.  The basic idea is to be able to control the enviroment to maximize production.   This “info-mercial” video shows an example of how this works complete with Wager background music.
This video shows how algae can be part of water clean-up and energy produciton:

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    Don’t Forget the Simple Stuff

    by Adam Smith on May.14, 2009, under Energy Efficiency, Renewable Energy

    We here at ClimateCapitalism.com are all for investing in clean energy, but we’re also for common sense.  Here’s an article from the Corvallis, OR Gazette Times that puts both concepts into perspective.  According to a study performed by an advocacy group in nearby Vancouver, WA, old-fashioned investments like installing insulation can often result in more energy savings than more expensive “green” investments like solar systems.  The moral of the story: a combination of energy efficiency and new technology is the best clean energy strategy.

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    Clean Coal’s Dirty Little Secret

    by progressivekid on Apr.21, 2009, under Clean Coal, Opinion, Renewable Energy

    A guest submission by our friends at: ProgressiveKid. This article was originally published on Oct, 29, 2008 at: http://www.pkonaledge.com/2008/10/29/clean-coals-dirty-little-secret/

    Coal Plant

    By Sarah Lane, ProgressiveKid

    Both President Obama and his former opponent John McCain endorsed “clean coal” as an important element of their energy plans. But “clean coal” is a fairy tale with a very bad ending, as in the Big Bad Wolf eats and digests Little Red Riding Hood and belches out a black cloud afterward. (continue reading…)

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