Electric Grid is a Vast Machine

Guinnessy writes "The latest issues of the Industrial Physicist suggests that 'the vast system of electricity generation, transmission, and distribution that covers the United States and Canada is essentially a single machine-- by many measures, the world's biggest machine.' The article says that because deregulation ignored the physics of the machine, we have blackouts, a fact the industry warned regulators about in 1998. It has some nice hard science data for those interested in why we're going to get some more blackouts in the future unless Congress gets its act together."

Comments

Meanwhile in the land of Oz

[evil_roy]

We are planning deregulation in our most populated state..NSW. And we are using the US as the model for deregulation/privatisation of our energy corporations.

Why isn't this sort of thing in the mainstream press? In Australia there are clear reasons why not..the two richest guys who would undoubtedly cash in on the deregulation own all the media..that's right, Murdoch and Packer own our papers,our magazines, our pay TV, the 'infoportals' for our largest ISP's,our regular tv stations and our sports.

You're sooo wrong about fuel cells.

[caveat]

An orbiting array of solar cells with intense microwave power transmission downlinks to mid-ocean electrolysis plants. Not feasible now, but in the next 10, 20 years it could happen.

Your entire last paragraph is wrong. Fuel cells are not batteries; they do work on the same very basic electrochemical rules, but a fuel cell doesn't have a self-contained store of reactants; also, fuel cells use the much more energetic 2 H2 + 02 -> 2 H2O reaction, instead of a lower-energy ionic redox reaction like batteries (If I'm speaking Greek, get an intro chem text and read up on electrochemistry, then look at the potentials for various half-reactions). AFAIK, it's also impossible to build a "rechargable" cell that will take H2O and electricity and spit out H2 and O2; it is possible to build a rechargable battery. Fuel cells are actually a hell of a lot (potentially an order of magnitude) more efficient than internal-combustion engines; fuel cells go directly from chemical energy -> electrical energy, while an ICE has to go chemicals -> thermal -> mechanical -> electrical energy.
Now for the numbers *hunts down PChem text (PW Atkins, Physical Chemistry, 7th ed.)* OK, the maximum theoretcal efficiency for a Carnot cycle engine is around 80%, depending on the delta-T between the engine and the environment; 80% is reached at around 900-1100C, at less than 100C it's limited to around 20%. Fuel cells are more efficeint at lower T, theoretically greater than 90 percent at less than 100C. Here's a pretty good summary page; the bottom graph is really good. Brush up on your thermodynamics, you're a clearcut case of a little knowledge being a dangerous thing :P