Climate Climate & Energy

It’s not the key to making renewables work

In his post on the potential of our current grid to support electric cars, John McGrath mentioned V2G in passing.

Electric cars (either hybrids or full EVs) have the potential to be a real-life silver bullet. Anyone who advocates for increased use of renewables is inevitably confronted with the problem of intermittency. With wind, the rule of thumb is that if grid energy supplied by wind grows to more than 25-30%, utilities need to spend prohibitive amounts on "spinning reserve" to even out supply.

Well, a nation driving plug-in hybrids makes for a spinning reserve of amazing proportions according to one estimate (PDF), the U.S. fleet would power the U.S. electrical grid seven times over.

What these estimates neglect is the capital costs of the batteries themselves. The assumption seems to be that since car owners have the batteries anyway, the economics can be calculated based on operating costs -- electricity and inconvenience.

Terminal Killness

City officials’ reluctance may halt LNG terminal in Long Beach, Calif. The debate over a $700 million liquefied-natural-gas terminal in Long Beach, Calif., may be coming to an end. City officials have long been squeamish about the proposed facility due to its proximity to the urban center. “It’s a risk for accident and terrorist attack, […]

We’ll Be In the Fallout Shelter

Regional nuclear war could create catastrophic global cooling, say scientists Not fully convinced that a nuclear war would suck? Perhaps this will do the trick: Scientists are reviving the “nuclear winter” fears of the 1980s, portending that even a small, regional nuke kerfuffle could trigger a devastating global cooling. Advanced computer models show that thick […]

Biofuel pioneer Lee Lynd points the way toward a “carbohydrate economy”

Well before cellulosic ethanol became the hot new fuel, Lee Lynd was immersed in it. Since 1987, the engineering professor has been leading a major academic study group on cellulosic ethanol from his perch at Dartmouth. Before that, he even wrote his undergraduate honors thesis on it. Lee Lynd. Photo: Joseph Mehling/Dartmouth More recently, Lynd […]

Grains become fuel at the world’s first cellulosic ethanol demo plant

Our plant supplants your plant: a real-life cellulosic ethanol refinery. Photo: Iogen Sometimes it seems virtually anything can be made into fuel. As though, if we had the right technology, we could throw together old T-shirts, bumper stickers, and pine cones to make a magical elixir to run the millions of cars on North America’s […]

Read and be dazzled by the techno-futurism

David asked contributors for end-of-year lists. Since I normally focus on conservative assumptions, I thought I'd use it as an excuse to look at future breakthroughs and cost improvements.

I was going to weasel by calling these "possibilities," but instead I decided to use the time-tested technique of public psychics: I'll call them predictions, crow over any that come true, and pretend the rest never happened.

1. Power storage that will make electric cars cheaper than gasoline cars.

Ultracapacitors, various lithium systems, lead carbon foam (PDF), and aluminum are among the candidates. The first storage device with a price per kWh capacity of $200 or less, mass-to-power ratio as good or better than LiOn, and ability to retain 75% or more of capacity after 1,000 cycles in real world driving temperatures and conditions wins.

Santa’s Gonna Be Pissed

Arctic summer ice could melt nearly completely by mid-century, study says The Arctic Ocean could lose nearly all of its summer ice by 2040, says a study published in the journal Geophysical Research Letters. Research suggests that Arctic ice will begin retreating rapidly around 2024; by mid-century, far northern Canada and Greenland may claim the […]

Alternatives to oil must take climate change into account

Let me engage in a piece of meta-wonkerific self-reference and quote myself:

"Energy security" is a lopsided way of framing our energy problem, and left un-balanced, will do more harm than good.

I said that in the context of talking about coal -- the enemy of the human race -- but this week brought another piece of evidence from a different quarter.

An interview with David Pimentel

Any worthy idea can withstand and even be improved by naysayers; scolds and skeptics play the useful role of pointing out obvious flaws. The biofuels industry has no more persistent, articulate, and scathing critic than David Pimentel, professor emeritus of entomology at Cornell University. David Pimentel. Photo: Chris Hallman / Cornell University Photography. In 1979, […]

Three perspectives on the biofuels debate

Imagine how amazing petroleum must have seemed back when it was an emerging alternative fuel in the U.S. Drill a hole in the ground in some parts of Texas and Pennsylvania, and rich black stuff would come gushing up, loaded with energy. What could possibly be the problem with such bounty? In some quarters, biofuels […]