Author Archives: energyskeptic

Short-circuiting a solar boom in Japan

Spain is still feeling the painful effects of the costs of overbuilt solar PV, and now Japan is finding itself in the same position.  This article does a lousy job of explaining that the grid must be in exact supply … Continue reading

Posted in Distributed Generation, Grid instability, Photovoltaic Solar, Renewable Integration | Leave a comment

Tuberculosis

The fear is that a fast-spreading, anti-biotic resistant strain will spread via mutation or bioterrorism. WHO estimates that two billion people — one third of the world’s population — are infected with Mycobacterium tuberculosis. 22 October 2014. Improved data reveals … Continue reading

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Drought in the news

Keep up with the latest drought news at the U.S. Drought Monitor. A ‘megadrought’ will grip U.S. in the coming decades, NASA researchers say. Researchers from NASA and Cornell and Columbia universities warned of an 80% chance of mega-droughts lasting … Continue reading

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Syrian conflict due to climate change drought

Fountain, H. March 2, 2015. Researchers Link Syrian Conflict to a Drought Made Worse by Climate Change. New York Times. Drawing one of the strongest links yet between global warming and human conflict, researchers said Monday that an extreme drought … Continue reading

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Charles A. S. Hall Conventional oil peak was 2005

The global production of conventional oil began to decline in 2005, and has followed a path over the last 11 years very close to our scenarios assuming low estimates of extractable ultimate resource (1.9 Gbbl) John L. Hallock Jr., Wei … Continue reading

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Charles A. S. Hall “EROI of different fuels and the implications for society”

Charles A.S. Hall, Jessica G. Lambert, Stephen B. Balogh. 2014. EROI of different fuels and the implications for society. Energy Policy 64: 141-152. Highlights: For nations examined, the EROI for oil and gas has declined during recent decades. Lower EROI … Continue reading

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Wind turbines hit limits to growth before 50% wind power penetration

Material requirements of 50% wind power in the USA hit limits to growth Wind turbines can’t be made forever because natural gas, coal, oil, uranium (thorium), neodymium, and other energy resources and minerals needed for wind turbines are finite, and … Continue reading

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Wind’s dirty secret: it goes on vacation in the summer

  Figure 1. Summer wind across the USA is nearly all sluggish Class 3 (light blue), Class 2 (orange) or class 1 (blank) (NREL). Someday wind and solar will need to contribute over 50% of power due to declining fossil … Continue reading

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Wind power capacity value — effective load carrying capability (ELCC)

NREL. 2008. Determining the Capacity Value of Wind: An Updated Survey of Methods and Implementation. National Renewable Energy Laboratory. Electric systems must have sufficient reserves so that resources are adequate to meet customer demand. Because electricity demand cannot be known … Continue reading

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Is there enough renewable energy to replace fossil fuel electricity generation?

NREL. July 2012. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis. National Renewable Energy Laboratory. This document is a thought experiment that uses GIS mapping to estimate how much renewable power could possibly be generated in each state regardless of … Continue reading

Posted in Alternative Energy, Photovoltaic Solar, Renewable Integration, Solar Thermal, Wind | Tagged , , , , , | 4 Comments