By Luciano Celi, Ugo Bardi, Cassandra's legacy
Presently although the EROI decline is quite clear the Net Energy is still well above 90%. The society feels pretty safe. The problem is that we are walking along a cliff and it is increasingly urgent to make an energy transition, before finally ending up in the abyss.
By Frank Kaminski, Mud City Press
Hall invented the very term energy return on investment, and he’s done decades of seminal research on the phenomenon that it describes. As the current shale oil miracle goes the way of all mirages—causing the issue of energy depletion to reenter the public discourse in a big way—one can only hope that Hall’s ideas will draw a great deal of well-deserved notice.
By Ugo Bardi, Cassandra's legacy
The history of the earth system is normally described in terms of a series of time subdivisions defined by discrete (or “punctuated”) stratigraphic changes in the geological record, mainly in terms of biotic composition. The most recent of these subdivisions is the proposed “Anthropocene,” a term related to the strong perturbation of the ecosystem created by human activity.
By Brian Davey, Feasta
We now have to take into account that depletion means that, at well heads around the world, the energy to produce energy is increasing. It takes energy to prospect for oil and gas and if the wells are smaller and more difficult to tap because, for example, they are out at sea under a huge amount of rock. Then it will take more energy to get the oil out in the first place.
By François-Xavier Chevallerau, Biophysical Economics Policy Center
Above all, the relevance of a national-level EROI lies in its potential to inform policy decisions that aim to manage an energy transition to a low carbon economy. In general, countries should aim to have high levels of national-level EROI, since this means that more net energy is available for use in the productive economy.
By François-Xavier Chevallerau, Biophysical Economics Policy Center
As societies and economies transition away from high net energy resources such as ‘conventional’ fossil fuels and towards lower net energy resources such as unconventional fossil fuels or renewables, either voluntarily (e.g. to fight climate change) or due to resource constraints, a number of researchers and analysts have argued that we might be approaching the “net energy cliff”...
By Charles Hall, Ugo Bardi, Cassandra's legacy
The EROI of our various energy options, and its associated issues, may be the most important issues that will face future civilizations.
By Chris Nelder, Energy Transition Show
The guest on Chris' show this week is Dave Murphy, Assistant Professor, St. Lawrence University and an expert on the topic of energy return on investment.
By Eric Zencey, The Daly News
Ecological Economics represents the extension into economics of the thermodynamic revolution of the nineteenth and twentieth centuries.
By Josh Kearns, Engineering for Change
Development professionals do their work under the assumption that the developing world will some day look a lot like the developed world.
By Eric Garza, HowEricLives.com
We all make decisions on what to spend our money - or other resources like time and effort - and I think we'd all do well to explore the many non-monetary costs and benefits that accompany this spending.
By Jason Heppenstall, 22 Billion Energy Slaves
How much energy is too much energy?