Tag Archives: solar

Solar PV requires too much land to replace fossils

Posted on December 4, 2018 by

Preface. This is a brief summary of the Capellan-Perez paper that calculates the land needed to use solar to replace electricity as well as the land needed if solar were to replace all of societies use of energy (i.e. transportation, … Continue reading →

Posted in Solar | Tagged , , , , , | 8 Comments

Book review of Vaclav Smil’s “Energy Transitions: History, Requirements, Prospects”

Posted on November 13, 2018 by

Preface.  In my extract of the 178 pages in the book below, Smil explains why renewables can’t possibly replace fossil fuels, and appears to be exasperated that people believe this can be done when he writes “Common expectations of energy … Continue reading →

Posted in Alternative Energy, Energy Books, Vaclav Smil | Tagged , , , , , , , , , , , | 13 Comments

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

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 , , , , , , | 3 Comments

If we really cared about CO2, we’d reduce car size and weight, not make electric cars

Posted on December 8, 2017 by

Preface. Since my book “When trucks stop running: Energy and the future of transportation makes the case that it’s trucks that need to be electrified to keep civilization going, since biofuels don’t scale up, natural gas and liquefied coal are … Continue reading →

Posted in Automobiles, Electrification | Tagged , , , | 14 Comments

Why is nearly all solar power built where subsidies are the highest?

Posted on October 8, 2017 by

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 →

Posted in Concentrated Solar Power, Photovoltaic Solar, Solar EROI, U.S. Congress Energy Policy | Tagged , , , , , , | 6 Comments

Wind and solar need natural gas to balance intermittent, variable, and seasonal power

Posted on July 8, 2017 by

Preface. The highest wind states are getting more and more dependent on natural gas to balance wind and solar as they live and die. Yet conventional natural gas in the U.S. has peaked (half of our national gas, and declining … Continue reading →

Posted in Natural Gas, Solar, Wind | Tagged , , , , | Comments Off on Wind and solar need natural gas to balance intermittent, variable, and seasonal power

California hits the solar wall

Posted on June 17, 2017 by

[ What is a solar wall?  Read part 1: California could hit the solar wall and then excerpts from the following article in the financial times, Britain’s Wall street journal.  I’ve also reworded some of it. Renewables are rendering existing … Continue reading →

Posted in Natural Gas, Solar | Tagged , , | 3 Comments

Alternative Energy Booklist: Biofuels, Batteries, Solar, Wind, Nuclear, Hydropower, Hydrogen, Fusion, Geothermal, Wind & tidal, Muscle power, Far out

Posted on February 4, 2017 by

Why Alternative Energy can’t replace fossil fuels More booklists Alice Friedemann  www.energyskeptic.com  Author of Life After Fossil Fuels: A Reality Check on Alternative Energy; When Trucks Stop Running: Energy and the Future of Transportation”, Barriers to Making Algal Biofuels, & … Continue reading →

Posted in Alternative Energy, Book List | Tagged , , , , , | 1 Comment

California could hit the solar wall

Posted on September 18, 2016 by

[ According to a Stanford University article below this introduction (followed by excerpts from two California Energy Commission reports), if California uses mainly solar power to meet a 50% Renewable Portfolio Standard (RPS), on sunny days, for most of the … Continue reading →

Posted in Photovoltaic Solar, Renewable Integration | Tagged , , , | 4 Comments