Category Archives: Energy

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

Fish scraps could power some cruise ships by 2021

Posted on April 24, 2019 by

Preface.  Some black humor for those following energy descent. Alice Friedemann   www.energyskeptic.com  author of “When Trucks Stop Running: Energy and the Future of Transportation”, 2015, Springer and “Crunch! Whole Grain Artisan Chips and Crackers”. Podcasts:  KunstlerCast 253, KunstlerCast278, Peak Prosperity] … Continue reading →

Posted in Far Out | Tagged , , | 1 Comment

Hydropower dams and the ways they destroy the environment

Posted on April 15, 2019 by

Preface. Hydropower comprises 71% of renewable energy worldwide.  Nations like the U.S. and Europe have dams that have reached the end of their lifespan — more are being torn down than built. In the U.S. 546 dams were removed between … Continue reading →

Posted in CO2 and Methane, Dams, Hydropower | Tagged , , , , | Comments Off on Hydropower dams and the ways they destroy the environment

Why aren’t there battery powered airplanes or flying cars?

Posted on March 13, 2019 by

Preface.  Batteries are too heavy for airplanes to get off the ground. Though that hasn’t stopped people from trying: Norway’s new electric plane crashes during demo flight (Robitzski 2019) The two articles below explain why. Alice Friedemann   www.energyskeptic.com  author of … Continue reading →

Posted in Batteries, Energy | Tagged , , | 4 Comments

Pedro Prieto: many solar panels won’t last 25-30 years, EROI may be negative

Posted on March 4, 2019 by

Preface. Pedro Prieto and Charles Hall wrote the definitive book on the EROI of solar power, “Spain’s Photovoltaic Revolution. The Energy Return on Investment” and has built many commercial facilities himself and witnessed the failure of solar panels long before … Continue reading →

Posted in Pedro Prieto, Photovoltaic Solar | Tagged , , , | 7 Comments

Book review of Underbug: an obsessive tale of termites and technology

Posted on February 23, 2019 by

Preface.  I read this book mainly to find out where “grassoline” stood. Scientists thought 10 years ago that we could recreate the termite biota system of digesting biomass to create biofuels.  But this appears to be far in the future … Continue reading →

Posted in Agriculture, Wood | Tagged , , , | Comments Off on Book review of Underbug: an obsessive tale of termites and technology

Can Zinc batteries save the electric grid?

Posted on February 17, 2019 by

Preface: Right now, and as long as natural gas lasts, the electric grid will stay up since it is the main storage and way to balance unreliable wind and solar power. Hydropower can also play a major role in the … Continue reading →

Posted in Batteries, Energy Storage, Lithium-ion | Tagged , , , , | 1 Comment

From Horsepower to Horse Power. When Trucks stop, Horses start.

Posted on February 8, 2019 by

Preface. Before the industrial revolution there were only four sources of mechanical power of any economic significance. They were human labor, animal labor, water power (near flowing streams) and wind power.   Work done by animals, especially on farms, was still … Continue reading →

Posted in Life Before Oil, Muscle Power | Tagged , , , | 8 Comments

Muscle Power

Posted on February 5, 2019 by

Preface. Below is a review of “Prime Mover: A Natural History of Muscle: from Natural History Magazine. Since both my books explain why we will be returning to biomass and muscle power, here’s yet another preparation opportunity: breed horses and … Continue reading →

Posted in Agriculture, Energy Books, Life Before Oil, Muscle Power, What to do | Tagged , | 3 Comments

Challenges to the Integration of Renewable Resources at High System Penetration

Posted on February 2, 2019 by

Preface.  This overview of challenges for wind and solar written in 2010 is still true today. We are far from being able to reach even a 50% renewable grid (excluding hydropower from the total) given the lack of storage, the … Continue reading →

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Steam engines. Exergy power. and work in the US

Posted on January 27, 2019 by

Preface.  At some point of fossil fuel decline future generations will be tempted to build steam engines again, and perhaps just as in America initially they’ll use wood to fuel the engines, since coal will be scarce at some point … Continue reading →

Posted in Coal | Tagged , | 3 Comments