Biofuels

Transition & responses – Oct 12

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– 10/10/10 day of climate action (photo slideshow)
– Review of the Totnes Energy Descent Action Plan
– Oxfordshire town sees human waste used to heat homes
– Transition and Social Enterprise: a short film
– Google Invests in $5bn Wind-Power Superhighway
– Hopkins Interview

Military reports leading the charge in peak oil debate

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“Fueling the Future Force,” published September 27, is the third military consideration of a future of scarce oil published so far this year. It states that 77% of the US Department of Defense’s “massive energy needs” are met by petroleum – but “given projected supply and demand, we cannot assume that oil will remain affordable or that supplies will be available to the United States reliably three decades hence.” To remain as an effective fighting force, the entire US military must transition from oil over the coming 30 years.

Renewables & efficiency – Sept 20

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– China resorts to blackouts in pursuit of energy efficiency
– Air Conditioning Innovation Uses 90% Less Power
– Solar on the Cheap: Thanks Purple Pokeberry!
– Ten Ways the Feds Are Leading the Green Charge
– Busting Myths About Photovoltaics
– Rising wheat prices raise fears over UK commitment to biofuels

Food & agriculture – Sept 3

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– The Peanut Solution (patents and famine)
– Can science feed the world? (Nature magazine special)
– How to feed a hungry world
– Food: An underground revolution (Research on roots)
– Seeing a Time (Soon) When We’ll All Be Dieting
– World Carryover Grain Stocks Fall to 72 Days of Consumption
– Growing fuel by the roadside

Biodiesel, biochar & biodiversity in Costa Rica: An example of small-scale, locally-appropriate action

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As global change related to resource depletion and climate change becomes increasingly severe, the ineffectiveness of world governments as well as mainstream environmental organizations and movements is obvious…Instead of relying on these approaches, it seems the safest and most secure adaptive route is the introduction of decentralized, local alternative energy and environmental solutions.

New perspectives on the energy return on (energy) investment (EROI) of corn ethanol: part 2 of 2

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In the analysis underlying our paper “New Perspectives on the Energy Return on (Energy) Investment (EROI) of Corn Ethanol,” we performed four major analyses relating to the EROI of corn ethanol. In this part, we will discuss two additional research areas from the paper.

New perspectives on the energy return on (energy) investment (EROI) of corn ethanol: Part 1 of 2

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Over the past decade there has been considerable debate on corn ethanol, most focused on whether it is a net energy yielder…On one side are Pimentel (2003) and Patzek (2004) who claim that corn ethanol has an EROI below one energy unit returned per energy unit invested, and on the other side are a number of studies claiming that the EROI is positive, reported variously as between 1.08 and 1.45 (Wang et al. 1997; Wang 2001; Shapouri et al. 2002; Graboski 2004; Shapouri 2004; Oliveira et al. 2005; Farrell et al. 2006; Wang et al. 2007). Even with numerous publications on this issue, disagreement remains as to whether corn ethanol is a net energy yielder.

The U.S. Exports More Corn Ethanol

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In the past twelve months, ethanol exports from the United States have increased from 4 million gallons in March of ’09 to 46 million gallons in March of this year to places like United Arab Emirates, Brazil, Canada, and the Netherlands. This year’s March figure is about 4 percent of the 12 billion gallons mandated for domestic biofuel use this year. Ethanol producers are thrilled.