Categories
-
Recent Posts
- Hemp for paper, textiles, the war on drugs, and more
- Why towns have a hard time adding EV, solar, heat pumps
- Building a national super grid in America
- The Mayflower from the book The Barbarous Years
- Deep Sea Oil
- Book review of “Livewired. The inside story of the ever-changing brain”
- The conveyor belt may be slowing down — Yikes!
- Battery Energy storage batteries (BESS) too complex to ever be commercial
- New war and energy alliances over next resource wars
- Book review of “Siege: Trump Under fire”
- Why do people vote for Trump?
- Book review of “Pandemic Politics: The Deadly Toll of Partisanship in the Age of COVID”
- The evolution of the Republican party from 1960 to 2024: from moderate democracy to extreme authoritarianism
- Why some people are conservative and others liberal
- Book review: Bring the War Home: The white power movement & paramilitary America
Tag Archives: EROI
Murphy & Hall 2011 Adjusting the economy to the new energy realities of the second half of the age of oil
[ Below are excerpts from this 5 page paper, slightly rearranged, go here to see all of the text, figures, and tables. Alice Friedemann www.energyskeptic.com author of “When Trucks Stop Running: Energy and the Future of Transportation, 2015, Springer] Murphy, … Continue reading
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 Charles Hall, EROEI, EROI, Pedro Prieto
3 Comments
Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar PV, Part 2
Preface. Below is a book review of Charles Hall’s 2017 book, “Energy Return on Investment: A Unifying Principle for Biology, Economics, and Sustainability“, that he wrote to discover why solar advocate EROI results are so much higher than what was … Continue reading
Posted in Charles A. S. Hall, EROEI Energy Returned on Energy Invested, Pedro Prieto, Photovoltaic Solar, Solar EROI
Tagged capacity credit, EROEI, EROI, solar PV
Comments Off on Tilting at Windmills, Spain’s disastrous attempt to replace fossil fuels with Solar PV, Part 2
EROI of Canadian Natural Gas. A peak was reached despite enormous investment
[ Although I’ve extracted much of this paper, it is not complete—there are missing equations, figures, tables, and text– so see the paper for details (it is available online). I’ve rearranged the order of the paper. The conclusion is just … Continue reading
Posted in EROEI Energy Returned on Energy Invested, Natural Gas, Peak Natural Gas
Tagged EROI, natural gas
4 Comments
Are biofuels a sustainable and viable energy strategy?
Preface. In 2000, Melanie Kenderine at the U.S. Department of energy stated that: “This nation has abundant biomass resources (grasses, trees, agricultural wastes) that have the potential to provide power, fuels, chemicals and other bio-based products” (136). That’s a good … Continue reading
Posted in Biofuels, EROEI Energy Returned on Energy Invested
Tagged biofuel, EROEI, EROI, net energy, subsidies
Comments Off on Are biofuels a sustainable and viable energy strategy?
California oil EROI dropped from 6.5 to 3.5 by 2005
Brandt, A. R. October 12, 2011. Oil Depletion and the Energy Efficiency of Oil Production: The Case of California. Sustainability 2011, 3, 1833-1854 [ Brandt estimates the energy return on investment (EROI) dropped from ~6.5 in 1955 to ~3.5 fifty … Continue reading
Posted in EROEI Energy Returned on Energy Invested
Tagged california, EROEI, EROI, net energy, oil
1 Comment
Hall and Lambert: EROI of different fuels and the implications for society
[ Excerpts from the Hall, Lambert, and Balogh EROI paper. You may want to read the original paper here since I’ve left out charts, figures, and text. In my opinion, EROI is important because it is due diligence – society ought to … Continue reading
Energy return of ultra-deepwater Gulf of Mexico oil and gas
Moerschbaecher, M., John W. Day Jr. October 21, 2011. Ultra-Deepwater Gulf of Mexico Oil and Gas: Energy Return on Financial Investment and a Preliminary Assessment of Energy Return on Energy. Sustainability 2011, 3, 2009-2026 [Excerpts from this 18 page paper … Continue reading
Posted in EROEI Energy Returned on Energy Invested, Threats to oil supply
Tagged deepwater, EROEI, EROFI, EROI, natural gas, oil
1 Comment
Tar sand EROI 2013 Poisson and Hall
Alexandre Poisson, Charles A. S. Hall. 2013. Time Series EROI for Canadian Oil and Gas. Energies 2013, 6, 5940-5959 [ This is an extract from this 20-page paper. Tar sands are the hope offered by techno-optimists that a great deal … Continue reading
Posted in Charles A. S. Hall, EROEI Energy Returned on Energy Invested, Tar Sands (Oil Sands)
Tagged EROI, Hall, oil sand, tar sand
1 Comment
How much net energy return required to prevent collapse?
Preface. Charles Hall, one of the founders of EROI methodology, initially thought an EROI of 3 was enough to run modern civilization, which is like investing $1 and getting $3 back. But after decades of research, Hall concluded an EROI … Continue reading
Posted in Charles A. S. Hall, EROEI Energy Returned on Energy Invested, Net Energy Cliff
Tagged energy return on investement, EROEI, EROI, net energy cliff
Comments Off on How much net energy return required to prevent collapse?