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Recent Posts
- Why the U.S. is ignoring nuclear winter in nuclear policies & strategies
- Oil choke points vulnerable to war, chaos, terrorism, accidents, & piracy
- Nuclear weapons must be reduced or we risk nuclear winter
- Fusion is already running out of fuel
- Peak Oil is Officially Here! World oil production peaked November of 2018
- Wood, the fuel of preindustrial societies, is half of EU renewable energy
- Rare Earth updates: recent research on why complex & intelligent life are rare in the Universe
- Book review of “Chip War” and the Fragility of microchips
- The tremendous material and energy toll of the digital economy
- Nuclear attack on U.S. could kill 90% of Americans
- What percent of Americans are rational?
- Book review of Lights Out. A Cyberattack. A Nation Unprepared. Surviving the Aftermath
- Off-Road vehicles & equipment need diesel fuel
- Book review of “Prime Movers of Globalization: the History & Impact of Diesel Engines & Gas Turbines”
- Mental Health. Coping with the future: notes from Jackson & Jensen’s “An Inconvenient Apocalypse”
Category Archives: EROEI Energy Returned on Energy Invested
Net Energy Cliff Will Lead to Collapse of Civilization
The remaining oil is poor quality, and the energy to get this often remote oil so great that more and more energy (blue) goes into oil production itself, leaving far less — the grey area — available to fuel the … Continue reading
ITER fusion: How’s it coming along?
Preface. Fusion is the only possible energy resource that could replace fossil fuels according to Martin Hoffert, et al in the 2002 Advanced Technology Paths to Global Climate Stability: Energy for a Greenhouse Planet, Science. I’m not so sure fusion … Continue reading
Posted in EROEI Energy Returned on Energy Invested, Fusion
Tagged delay, EROI, fusion, ITER, nuclear
2 Comments
What on earth is exergy?
Preface. This is one of the best explanations of exergy I’ve been able to find. This paper makes the case that exergy ought to be considered by just about every industry and government to achieve greater energy efficiency, and makes … Continue reading
Posted in Exergy
2 Comments
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 china, EROEI, EROI, peak coal, peak natural gas, peak oil
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
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 climate change, end of growth, EROEI, paul krugman, richard heinberg, solar, wind
3 Comments
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
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 critical thinking, EROEI, ethanol
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 EROEI, EROI, fracked gas, shale gas, shale oil, tight gas, tight oil
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 biomass, EROEI, EROI, ethanol
Comments Off on Why studies come up with different Energy Returned on Invest (EROI) results: can it be fixed?