Category Archives: Energy

the posts in this category used to be in “Energy in A Nutshell” at my former web site.

By 2020 it may be clear to everyone that oil decline has begun

Preface. There are two parts to Dittmar’s study. The first one concerns production, based on the most recent years of oil production.  Dittmar found a strong pattern of oil decline after the plateau of 3% a year for five years, … Continue reading

Posted in Exports decline to ZERO, How Much Left, Peak Oil | Tagged , , | 3 Comments

Want to go off-grid? You might need hundreds of Tesla batteries

Preface. Although you may not be as far north as Victoria, British Columbia (48.4 latitude), you’d ideally want to be at 30 degrees or less latitude from the equator to even consider the expense of off-grid solar power.  And even … Continue reading

Posted in Batteries, Photovoltaic Solar | Tagged , , | 9 Comments

Horse Power

What follows was written by https://civilwartriviajunkie.wordpress.com/about/ “In the June 2015 issue of Civil War Times Magazine is an article by the noted historian James I. Robertson entitled A Dead Horse at Antietam wherein he discusses the roll and fate of … Continue reading

Posted in Muscle Power | Tagged , | 7 Comments

Vaclav Smil on wood

[ I’ve extracted bits about wood from Smil’s book about materials below, read the book for the larger context.  Enormous amounts of wood were used in former civilizations with much smaller populations than today, so it’s clear we can’t go … Continue reading

Posted in Vaclav Smil, Wood | Tagged , , | 2 Comments

China is securing energy resources. A potential threat to Europe and U.S. interests.

Preface. China is vastly expanding its fleet of natural gas heavy-duty trucks to 700,000 in 2018 and similar or more amounts after that.  They are building pipelines to Russia and other Central Asian countries to keep the gas coming.  I … Continue reading

Posted in Energy Dependence, Energy Policy, Natural Gas | Tagged , | 1 Comment

Is Peak Oil dead? Not by a long shot! Remember Ladyfern?

Preface. Oil is finite. Period. Don’t be fooled by news stories that peak oil is dead, or we have reached peak demand.  They’re all nonsense. Gail Tverberg at ourfiniteworld.com is especially good at explaining this. Worse yet, what we have … Continue reading

Posted in Oil & Gas Fracked, Peak Natural Gas | Tagged , , , | 1 Comment

Permafrost will limit natural gas, oil, and coal extraction

Preface. For many people, it’s comforting to know that about 25% of remaining oil and gas reserves (we have the know-how and economics to get it) and resources (beyond our technical and monetary capability) are in the arctic. They assume … Continue reading

Posted in Arctic, EROEI remaining oil too low, How Much Left, Peak Natural Gas, Peak Oil, Reserves Lower than stated, Roads, Transportation | Tagged , , , , | Comments Off on Permafrost will limit natural gas, oil, and coal extraction

Given the laws of physics, can the Tesla Semi really go 500 miles, and what will the price be?

Preface: Most people think that electric truck makers need to tell us the specs — the battery kWh, price, performance, and so on — before we can possibly know anything about their truck. But that’s simply not true.  We know … Continue reading

Posted in Electric Trucks, Electric trucks impossible, Fuel Efficiency, Lithium-ion | Tagged , , , , , , , , | 16 Comments

Overview of the renewable fuel standard, U.S. House hearing 2013

House 113-61. June 26, 2013. Overview of the renewable fuel standard: Government perspectives. House of Representatives. [Excerpts from the 104 page transcript follow] Key points: The implicit premise that cellulosic and other advanced biofuels would be available in significant quantities … Continue reading

Posted in Renewable fuel standard RFS, Transportation | Comments Off on Overview of the renewable fuel standard, U.S. House hearing 2013

Why is nearly all solar power built where subsidies are the highest?

If solar net energy return is as high as some solar advocates claim, why does solar need any subsidies? And not just U.S. subsidies, it’s subsidies on top of subsidies when you add in that we’re buying Chinese government subsidized … Continue reading

Posted in Concentrated Solar Power, Energy Policy, Photovoltaic Solar, Solar EROI | Tagged , , , , , , | 9 Comments