Category Archives: Energy

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

Hydrogen fuel cell cars are a waste of time and money, and explosive

Preface. Below are several articles about hydrogen.  Today in 2019 it is still far from commercial.  A massive amount of infrastructure needs to be in place before people will consider buying hydrogen fuel cell cars, and because of explosions in … Continue reading

Posted in Hydrogen | Tagged , , , | 3 Comments

Wind, solar, and natural gas are driving nuclear power out of business

Preface. I’m no fan of nuclear power because we may already be at peak uranium, there’s nowhere to store nuclear waste, and a spent nuclear pool fire could harm millions of people. But renewable wind and solar and natural gas … Continue reading

Posted in Nuclear Power Energy, Solar, Wind | Tagged , , , | 6 Comments

Getting Arctic oil and natural gas will take decades or more

Preface. Only one exploratory well can be drilled in the short arctic summers, and many more need to be drilled to even find and then explore the size of a potential oil field to see if it is worth extracting.  … Continue reading

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MIT: Why the electric-car revolution may take a lot longer than expected

Preface. This study from MIT explains why price parity of electric and gasoline vehicles is likely to take a lot longer than 5 years, and perhaps never if cars continue to depend on lithium-ion batteries. Deeper cost declines beyond 2030 … Continue reading

Posted in Automobiles, Lithium-ion | Tagged | 5 Comments

When wood is again our main energy source, how long will it last?

Preface.  Just when civilization is decades from returning to wood as the main energy source (due to peak oil in 2018), climate change is allowing invasive beetles to survive winters and kill trees, with drought and wildfires increasing the damage. … Continue reading

Posted in BioInvasion, Drought & Collapse, Nate Hagens, Where to Be or Not to Be, Wildfire, Wood | Tagged , , , , , | Comments Off on When wood is again our main energy source, how long will it last?

Generating electricity with biomass at utility-scale in California limited to direct combustion in small 50 MW plants

Preface. It’s obviously much easier and more energy efficient to set logs on fire for heat and electricity than to turn them into ethanol.   Burning biomass can’t do much to solve our energy crisis.  To produce just 10% of … Continue reading

Posted in Biomass, Electric Grid | Tagged , , | 1 Comment

Steam powered farm tractors

Preface. Steam engines weren’t very efficient, 10 to 20% at best, which is why they went away beginning around 1920 when oil-powered engines came along.  At the very best steam engines for transportation reached 10 to 20% efficiency. They were … Continue reading

Posted in Biomass-powered Steam Engines | Tagged , , , , | 8 Comments

Charcoal for the high heat needed in manufacturing after peak oil

Preface. De Decker (2011) writes: “A large share of energy consumed worldwide is by heat. Cooking, space heating and water heating dominate domestic energy consumption. In the UK, these activities account for 85% of domestic energy use, in Europe for … Continue reading

Posted in Manufacturing & Industrial Heat, Peak Biofuels, Wood | Tagged , , , | 3 Comments

Why self-driving cars may not be in your future

Preface. Below are excerpts from several articles about why a completely automated vehicle is unlikely.  Heaven forbid they are invented. Researchers have found that people will drive 76% more miles, stop using bicycles and mass transit, waste a considerable amount … Continue reading

Posted in Artificial Intelligence, Automobiles | Tagged , , , , , , , | 1 Comment

Foreign Policy: The limits of clean energy

Preface. This article appeared in the magazine Foreign Policy. Some key points: Renewables to power the world would require 34 million metric tons of copper, 40 million tons of lead, 50 million tons of zinc, 162 million tons of aluminum, … Continue reading

Posted in Alternative Energy, Mining, Peak Lithium | Tagged , , | 7 Comments