Category Archives: Energy

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

Making the most energy dense battery from the palette of the periodic table

There hasn’t been much progress in batteries the past 200 years, not enough for affordable cars, let alone far more essential freight vehicles. The very heavy, 4,647 pound Tesla Model S gets most of its mileage from aerodynamics, reduced rolling … Continue reading

Posted in Electric Cars, Lithium-ion | Tagged , , , , , | 1 Comment

Wave, Tide, Ocean Current, In-stream, OTEC power: National Academy of Sciences 2013

A review of “An Evaluation of the U.S. Department of Energy’s Marine and Hydrokinetic Resource Assessments. 2013. Marine & Hydrokinetic Energy Technology Committee; National Research Council” by Alice Friedemann, July 7, 2014, Last updated April 15, 2015 OTEC Introduction … Continue reading

Posted in Waves & Tidal | Tagged , , , , | 1 Comment

All Electric Trucks. Probably not going to happen. Ever. Why not?

There are “forms of transport that cannot be electrified — heavy-duty trucks and planes… Even if the electricity problem can be solved, it won’t address the needs of planes, trucks, ships and some industrial heating that cannot be electrified” (Long). … Continue reading

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Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar Photovoltaics

Book review of “Spain’s Photovoltaic Revolution. The Energy Return on Investment”, by Pedro Prieto and Charles A.S. Hall. 2013. Springer. Reviewed by Alice Friedemann, Last updated April 11, 2015 with responses from Prieto on criticism received at the 2015 … Continue reading

Posted in Alternative Energy, Charles A. S. Hall, Debt, Electric Grid, Energy, EROEI Energy Returned on Energy Invested, Photovoltaic Solar, Solar | Tagged , , , , , , | 9 Comments

GAO on why ethanol, and other non-drop in fuels, face pipeline & installation at service station challenges

[The challenges that ethanol faces in being put into new or modified pipelines and added to gas stations are issues faced by all alternative fuels (methanol, CNG, LNG, DME, diesohol, CTL, hydrogen, and so on) in a transition from gasoline … Continue reading

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Biofuels do not scale up enough to power society

Richard, T. August 23, 2010. Challenges in scaling up biofuels infrastructure. Science. (329)   Below are excerpts from this paper.  Look at the impossible scale of biomass required: 150 EJ/year = 15 billion metric tons of plant biomass = 200 billion … Continue reading

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A third of Nuclear Reactors are going to die of old age in the next 10-20 years

70% of reactors are over 25 years old, 23% are over 35 years old, so within 10 to 20 years about a third will have to be decommissioned, far more than the 63 under construction.  Some are bound to fail … Continue reading

Posted in Nuclear Power, Peak Everything | Tagged , | 7 Comments

Industrial Waste Heat – more BTUs than all renewable energy resources combined

Industrial waste heat Coal, natural gas, and oil are essential for the high temperatures required in the thermal processing of metals, cement, fertilizer, glass, processed foods, and so on. About 420 trillion Btus of this is wasted, and some of … Continue reading

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Giant oil field decline rates and their influence on world oil production

Excerpts from: Hook, M., Hirsch, R., Aleklett, K. June 2009. Giant oil field decline rates and their influence on world oil production. Energy Policy 37(6): 2262-2272 Future trends in giant oil field decline rates             … Continue reading

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Peak Soil: Why Biofuels are Not Sustainable and a Threat to America’s National Security

Alice Friedemann.  2007.   Last updated April 5, 2015 “The nation that destroys its soil destroys itself”, President Franklin D. Roosevelt There’s growing public attention from the people, all the way on down to the President, about biomass potential for energy.  … Continue reading

Posted in Alternative Energy, Biofuels, Biomass, Energy | 1 Comment