Wednesday, August 20, 2008

When is Fuel Not a Fuel?

Jason Grumet is the energy advisor for Mr. Obama. Recently I saw an interview that Mr. Grumet gave in which he claimed that we "need to promote alternate fuels for automobiles like electricity."

Now, Mr. Grumet is probably a smart man and maybe he just misspoke. Or, perhaps basic science and the laws of thermodynamics are not his strong suit.

So Mr. Grumet, it may come as a surprise to you but electricity is not a fuel. This goes to the core of how we use energy to move people from place to place.

From Wikipedia: "Fuel is any material that is burned or altered in order to obtain energy. Fuel releases its energy either through a chemical reaction means, such as combustion, or nuclear means, such as nuclear fission or nuclear fusion. An important property of a useful fuel is that its energy can be stored to be released only when needed, and that the release is controlled in such a way that the energy can be harnessed to produce work."

Electricity is a form of energy but it is not a fuel. Electricity is a flexible form of energy in that it can be transported and stored as an electrical charge with high efficiency.

So, for those of you who may have been misled to think that powering your automobile with electricity will result in less fossil fuel being burned, just what fuel will be used to generate that electricity? Currently about 95% of all electricity produced in this country comes from fuels like oil, natural gas and coal. Most of the remainder comes from solar, nuclear, and hydroelectric. Switching to electrically powered vehicles does not, in and of itself, reduce reliance on oil or reduce the production of carbon dioxide as a by-product. It would seem that Mr. Grumet does not understand this concept.

It would be interesting to know what is the true efficiency of the different fuels and forms of using the energy produced thereof to move humans and goods. For instance, what is the true energy cost of buring oil or coal? How much energy is consumed to locate it, extract it, transport it, process it, and deliver it to a vehicle? I could argue that wood might be the most efficient fuel when considering all of the other energy costs. Ultimately, the market should give us a guide as to the true cost of a fuel. When I was involved in the nuclear energy marketplace, I always wondered when the breakeven point is reached in terms of net positive energy produced from a new nuclear power plant. Consider all of the materials, work and services that goes into producing a power plant and all of the energy consumed along the way. When is the energy payback reached?

So, Mr. Grumet, before we can allow the government to mandate that all of our vehicles use electricity as an energy source we need to see where that energy is coming from. Your boss doesn't think that the use of nuclear energy is in the mix.

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