Electricity

Review: The Wealth of Nature by John Michael Greer

by

Having written extensively on occultism and the esoteric, and himself an adept in ritual magic, John Michael Greer is an eager student of the unexplained. Yet he’s also a sharp observer of the unexamined assumptions that people make about the physical world around them, and how these assumptions have helped land the world in its present crisis. One common presupposition is that nature is independent of the world of human economics, and thus can be treated as a disposable resource. An environmentalist and a devout follower of the druid path, Greer knows better, and he’s written several books seeking to dispel this mistaken dismissal of nature.

The Energy Return on Investment threshold

by

Hall and Day (2009) report that the Energy Return on Energy Invest (EROI) for coal might be as high as 80 and that for hydropower, EROI is 40. Does this mean that coal is twice as ‘good’ as hydro? The answer is no, and in this post I will discuss how this relates to the idea of an EROI Threshold

A Solar-Powered Car?

by

If you like the sun, and you like cars, then I’m guessing you’d love to have a solar-powered car, right? This trick works well for chocolate and peanut butter, but not so well for garlic bread and strawberries. So how compatible are cars with solar energy? Do we relish the combination or spit it out? Let’s throw the two together, mix with math, and see what happens.

ODAC Newsletter – Nov 18

by

US oil prices rose this week on news that the glut of crude stocks at Cushing Oklahoma, which has depressed the benchmark WTI contract for months, may soon be drained. Enbridge is to buy the Seaway pipeline which runs from the Houston area to Cushing, and plans to reverse its flow.

Energy – Nov 18

by

-Onshore wind energy to reach parity with fossil-fuel electricity by 2016
-Gas Companies Caught Using Military Tactics To Overcome Drilling Concerns
-EU biofuel target seen driving species loss: study
-New study suggests EU biofuels are as carbon intensive as petrol
-Local Power: Boulder Considers Moving Off the Grid

Pump Up the Storage

by

If we adopt solar and wind as major components of our energy infrastructure as we are weaned from fossil fuels, we have to solve the energy storage problem in a big way. An earlier post demonstrated that we do not likely possess enough materials in the world to simply build giant lead-acid (or nickel-based or lithium-based) batteries to do the job. Comments frequently pointed to pumped hydro storage as a far more sensible answer. Indeed, pumped storage is currently the dominant—and nearly only—grid-scale storage solution out there. Here, we will take a peek at pumped hydro and evaluate what it can do for us.