Tag Archives: EROEI

47 Reasons why wind power can not replace fossil fuels

Preface. Electricity simply doesn’t substitute for all the uses of fossil fuels, so windmills will never be able to reproduce themselves from the energy they generate — they are simply not sustainable.  Consider the life cycle of a wind turbine … Continue reading

Posted in Alternative Energy, Energy, Wind | Tagged , , , , , , , , | 1 Comment

Peak Oil, Coal and Natural gas in China

Preface. Below are excerpts from 2 articles.  You may want to read Tverberg’s article here since I left out the charts and included just a few excerpts. Some key points: The world needs growing energy supply to support the world … Continue reading

Posted in EROEI Energy Returned on Energy Invested, Peak Coal, Peak Natural Gas, Peak Oil | Tagged , , , , , | Comments Off on Peak Oil, Coal and Natural gas in China

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

[ 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

Preface. 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.

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

No, we’re not going to make ethanol out of CO2 and stop global warming

Preface.  In the article below Robert Rapier debunks the research paper proposing to convert CO2 into ethanol.  The researchers were honest and said “that the process is unlikely to be economically viable.” But the press spun it into a major … Continue reading

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

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

Preface. This is just a small sampling of what Bardi thinks might happen post fossil fuels, mostly shortened and reworded. Here are 7 other posts from this great book: Mining: Waste, Pollution, Destruction Ugo Bardi predictions of the future Minerals … 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?

[ 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

[ 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

[ 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