Tag Archives: EROEI

Peak Oil, Coal and Natural gas in China

Posted on July 31, 2018 by

[ I provide a short, 2 page overview of the paper Wang, J.L, et al. 2017 after my analysis of “A review of physical supply and EROI of fossil fuels in China”, Petroleum Science.  A more detailed, more wide ranging … Continue reading →

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Renewable EROI must include storage, low capacity factor, wide boundaries

Posted on June 25, 2018 by

[ Trainer argues that when you consider how the capacity factor of wind and solar are to fossil plants, seasonality of wind and solar the number of facilities is quite large to deal with the intermittency problem.  Therefore the storage … Continue reading →

Posted in Solar, Solar EROI, Wind, Wind EROI | Tagged , , , , , , | 3 Comments

Richard Heinberg: Paul Krugman’s Errors and Omissions

Posted on March 2, 2018 by

[ This article by Richard Heinberg at Postcarbon refutes a column by Paul Krugmen called “Errors and Emissions Could Fighting Global Warming Be Cheap and Free?” here.  Most of my friends and family think I’m nuts because articles like this … Continue reading →

Posted in EROEI Energy Returned on Energy Invested, Richard Heinberg, Solar, Wind | Tagged , , , , , , | 8 Comments

Peak soil: Industrial agriculture destroys ecosystems and civilizations. Biofuels make it worse.

Posted on August 31, 2017 by

Alice Friedemann. 2017. Peak Soil.  Last update Oct 23, 2017, first 2007 [ Formerly titled: Why Biofuels are Not Sustainable and a Threat to America’s National Security.  Shorter versions appear in the following books: Jacqueline Langwith, ed. 2008.  “Opposing Viewpoints: Renewable … Continue reading →

Posted in Alternative Energy, Biofuels, Biomass, Energy, Peak Biofuels, Soil, Soil | Tagged , , , , , , , , , , , , | 2 Comments

Robert Rapier on why “fuel from CO2” breakthrough won’t work

Posted on July 26, 2017 by

Robert Rapier. Oct 27, 2016.  Ethanol From Carbon Dioxide Is Still A Losing Proposition. energytrendinsider.com If I told you that I had created a process to extract pure gold from seawater, you might deem it an amazing accomplishment. If I … Continue reading →

Posted in Biofuels, Biomass EROI, Critical Thinking, Far Out, Other Experts | Tagged , , | 2 Comments

Minerals: Natural gas from Ugo Bardi’s “Extracted”

Posted on June 29, 2017 by

Bardi, Ugo. 2014. Extracted: How the Quest for Mineral Wealth Is Plundering the Planet. Chelsea Green Publishing. NATURAL GAS.  As figure 1 shows, the average EROEI required to run industrial society as we know it is around 8 to 10.   … Continue reading →

Posted in EROEI Energy Returned on Energy Invested, Oil & Gas Fracked | Tagged , , , , , , | 1 Comment

Why studies come up with different Energy Returned on Invest (EROI) results: can it be fixed?

Posted on March 21, 2017 by

[ There are many issues with biofuels beyond their trivial to negative energy return on investment (EROI). In Peak Soil I point out that current industrial farming techniques are destroying topsoil about 15 times faster than pre-fossil fuel economies — … Continue reading →

Posted in Biofuels, Biomass EROI, Charles A. S. Hall | Tagged , , , | Comments Off on Why studies come up with different Energy Returned on Invest (EROI) results: can it be fixed?

EROI explained and defended by Charles Hall, Pedro Prieto, and others

Posted on February 21, 2017 by

[ If you found this post interesting, the following posts are even better (more detailed and in-depth): Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar PV, Part 1 Tilting at Windmills, Spain’s disastrous attempt to replace … Continue reading →

Posted in Charles A. S. Hall, EROEI Energy Returned on Energy Invested, Pedro Prieto | Tagged , , , | 3 Comments

Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar PV, Part 2

Posted on January 26, 2017 by

[ Pedro Prieto presented an update on June 20, 2017 at the International Society for Biophysical Economics “Spain’s Solar Revolution Revisited: six years later” here: Pedro-Prieto_ISBPE_2017-Spains-solar-revolution-revisited.pdf.   See the pdf for more information Losses in book overestimated and revised Before / … Continue reading →

Posted in Charles A. S. Hall, EROEI Energy Returned on Energy Invested, Pedro Prieto, Photovoltaic Solar, Solar EROI | Tagged , , , | Comments Off on Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar PV, Part 2

Are biofuels a sustainable and viable energy strategy?

Posted on November 9, 2016 by

[In 2000, Melanie Kenderine at the U.S. Department of energy stated that: “This nation has abundant biomass resources (grasses, trees, agricultural wastes) that have the potential to provide power, fuels, chemicals and other bio-based products” (136). That’s a good point … Continue reading →

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