Source: General Motors
quote: But the fact remains, an electric vehicle is not a zero-emissions vehicle! It simply offsets the location of those emissions, from the car to the local coal/nuclear/etc. power plant.
quote: Folks love to talk about electricity as if its some free magical clean eco-friendly solution, while forgetting that the bulk of electricity generated in the US comes from burning coal
quote: I'm laughing hysterically that you think OPEC is anything but a global scam by petroleum exporters to fix the market.
quote: Are you forgetting Obama WANTED $10/gallon gas prices?
quote: I know that. My point was even this is better than putting a Keynesian in charge of our gasoline industry.
quote: By OPEC being an international organization outside of US control, we're probably coming out ahead. Are you forgetting Obama WANTED $10/gallon gas prices?
quote: between 2013 and 2017 the plan is to add Natural Gas, Solar, Wind, Nuclear, Coal, and Hydro... in that order
quote: #2.Even if a electric car is using 100% Coal power, its "cleaner" than a conventional gasoline engine in that it uses less overall kWh of energy and releases less pollution in addition to less C02.
quote: Why? Because people like to think gasoline springs from the ground next to the gas station. Truth is alot of energy (and pollution) is spent taking oil from Canada, Alaska, Texas, etc, transporting it and refining it and then transporting it again. In comparison, electric power, once its electricity, is significantly more efficient (and less polluting) distrabution.
quote: The 85 kWh battery on the Tesla gives it a 265 mile range, or 32 kWh per 100 miles. Charging the battery is about 75% efficient (probably a little higher, but I'm ignoring discharge efficiency) - the rest gets convert to heat. Transporting electricity over power lines is about 98% efficient. Coal plants about 40% efficient (newer ones can hit 45%). The net result is 32 / (.75 * .98 * .4) = 109 kWh per 100 miles.
quote: That approach unfairly favors electricity.. You can't include drilling and transport costs for gasoline while ignoring mining and transport costs for electricity. If you want a complete energy budget for everything, you need to include energy costs for mining coal, drilling for gas (actually since natural gas is a byproduct of petroleum drilling, you should divide the drilling costs between the two), etc. and transporting those materials to the power plant.
quote: Factor in that coal is much, much dirtier than gasoline and an EV (using electricity generated 100% from coal
quote: Hmm... Its true that overall, per kWh used, Coal is significantly dirtier than what comes out the tail-pipe of cars. But there is also localization to consider. A car typically puts out low level pollution right next to population centers. Many Coal plants put out a much more diffuse pollution further away from population centers. If your concern is the overall health of the enviroment, gasoline is somewhat better if you ignore refining and post refining transportation pollution.
quote: If your concern is people's health, a new coal power plant is probably better
quote: Sigh. No and No.
quote: USA coal power plants average around 34% efficiency acccording to the EIA, but if you want to count on new sub-critical we can use 40%.