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On Torrefaction via Radio Waves

Well the usual proposed uses of biochar are as a soil amendment and/or for carbon sequestration, so its energy content isn't a feature.

November 26, 2014    View Comment    

On Torrefaction via Radio Waves

What about pushing biomass all the way to biochar?

November 26, 2014    View Comment    

On Clinton (well, Gore) Went to Kyoto. Obama Went to Beijing

"If you refer back to the New York Times graph above, growth of emissions from China until 2030 is literally off the chart. The graph stops at 8 billion metric tons roughly now."

How far up does the line go, anyway? The NYT article I saw that graph in suggested 10-12 billion tons.

November 20, 2014    View Comment    

On Abandoned Solar Energy Project Highlights Pitfalls of Tax Uncertainty

"Pitfalls of Tax Uncertainty"

The law is what it is, and isn't expected to change. Where's the uncertainty? 

October 23, 2014    View Comment    

On Saudi Arabia Still Calling the Shots

If shale oil is a big part of US production and its breakeven price is ~$80/bbl, then that is the floor price. If falling demand drops the price below that level then production will also fall -- and pretty quickly, since individual shale wells don't last long and must be replaced with newly-drilled wells.

October 18, 2014    View Comment    

On Comparing Apples with Oranges

Also, remember that a lot of the nuclear down time is for refueling, which is scheduled far in advance, and done in the spring and fall, when demand is slack.

October 14, 2014    View Comment    

On Attention to Climate Change is On the Rise. Nuclear Energy is an Essential Part of the Solution

"The New York march had some 300,000 participants, well above the 100,000 people expected."

That ~300k figure is dubious.

October 8, 2014    View Comment    

On Calibrating Solar Energy's Growth Potential

'... Germany produced a record 50.6 percent of its energy with solar panels in the first two weeks of June.'

Boy, some people are seriously misreading the data. In the first two weeks of June, Germany generated 2.46 TW-h of solar power, out of a total of 18.93 TW-h: 13%. (And of course those were the two best weeks for solar this year.)

October 6, 2014    View Comment    

On The Most Consumed Fuel by State

BTUs, apparently.  

But 'one of these things is not like the others'. Coal, gas, and uranium generate heat, which is used to produce electricity (predominately? mostly?). Outside Hawaii, oil is burned to fuel transportation.

September 26, 2014    View Comment    

On How Much Longer Until Solar Eliminates the Utilities?

What happens in August that makes demand so much higher, and solar so much lower, than in July and September?

August 14, 2014    View Comment    

On Renewables Rising: Wind, Solar, Geothermal, and Biomass Will Top Hydropower in 2014

"Wind, solar, geothermal and biomass are surpassing hydropower as the dominant form of renewable electricity."

Lumping four different things together and calling them "the" dominant energy source seems more than a little misleading. Eyeballing the last graph,

Hydro: 300 TW-h/yr

Wind: 250 TW-h/yr

Bio: 150 TW-h/yr

Solar: 100 TW-h/yr

Geo: 75 TW-h/yr

August 5, 2014    View Comment    

On Geoengineering - Insanity? All the More Reason to Discuss It

Anyone who's sure this trend is going to change drastically is free to dismiss geoengineering:

July 22, 2014    View Comment