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> the US grid is currently 12.x% renewable

Overall US power consumption has gone from 8.9% renewables 10 years ago to ~12.2% today. Vehicles that use fossil fuels as their primary source of energy will always make very little use of renewable energy. Electric vehicles have the potential to use solely renewable energy, which is the direction grid power is heading.

So should we invest in electric vehicles now, or should we use fossil fuels sparingly and settle with transportation that's unable to tap into renewables?

EDIT: 8.9% in 2002

Where are those numbers from? Wikipedia[0] states 8.90% in 2002 to 12.22% in 2012. (Edit: I see we're agreed on that.) Again, that's percent of the total electrical energy generation, not the entire energy budget, which is much higher.

I'm fairly optimistic that we'll end up using electrical vehicles down the road. But it's a long way off from becoming a sensible alternative; it'll take a long time to satisfy the current electrical energy requirements by renewables, and adding the transport budget essentially doubles the amount required.

And people are deluding themselves if they think they're being environmentally responsible by driving around a Model S. Maybe if you buy a Model S and don't drive it.

[0] http://en.wikipedia.org/wiki/Renewable_energy_in_the_United_...

> But it's a long way off from becoming a sensible alternative

Electric vehicles aren't going to flood the market overnight, just as renewable energy isn't going to suddenly become our primary source of energy. These things take time and money. The more traction we give them, the more attainable they will become.

Environmental responsibility isn't possible when you ignore hard facts about the future. By the time I reach old age there will be 2 billion more people on this planet. They are capable of much more damage than we are.

The main win to me is that electric power is fuel-agnostic. Transitioning to electric mobility means our energy infrastructure can shift to different fuel sources at its own pace, independent of the transportation infrastructure.

All of this rhetoric is completely besides the point as several studies show. Even in West Virginia, the most coal-heavy energy market in America, pure electric vehicles today produce less greenhouse gases than the average gasoline vehicle due to the efficiency of electric motors and the use of surplus offpeak energy. In almost all markets, it beats a Toyota Prius.

http://www.ucsusa.org/clean_vehicles/smart-transportation-so...

http://www.automotivescience.com/press/4582462907

Shrug. Now we've moved from "good for the environment" to between better than an average American car (i.e. appalling) and about as good as a hybrid vehicle[0]. Which really isn't all that exiting. Again, you'd be doing something good by driving less; but that's typically not what people do next after buying a sports car.

No environmental strategy that asks people to make do with less is ever going to win. Take a look at what's happening in the BRIC countries and then try to tell me it's going to work.

People want more and will figure out how to get more. It's doing that sustainably that will save us. Kind of the whole point of the Tesla S.

If you read my comment and understood it fully, you'd notice that in most states, a pure electric vehicle is NOT "about as good as a hybrid vehicle", but cleaner than the cleanest hybrid. Electric vehicles are also getting cleaner with the electric grid while non-plugin hybrids have made no progress in over a decade.

Keep in mind that producing one gallon of gasoline uses more electricity than it takes to drive the same distance in an electric car as that gallon would take you in a gas car.

Even with non-renewable energy sources, creating the power at a massive GE Turbine is more efficient than a gasoline engine. Internal combustion engines are ~30% efficient in converting fuel to energy releasing the rest of the energy as heat. GE Turbines used at 100+megawatt powerplants are 60% efficient. Same fuel source, twice as efficient. So even if we're not using wind and solar, electric is better for the environment.

GG GLHF

Conveniently ignoring the efficiency losses involved in electrical mobility. But whatever -- I'm not saying buy an equivalent gasoline vehicle and drive around. I'm saying buy a much smaller car and drive less. Or don't, but don't pretend you're driving around a sports car for the environment.

Much of those 28% are locked into using fossil fuel. Electric cars are about enabling switching to renewable sources of energy down the line, not right now. It’s about large scale infrastructure change, it’s about the difference between changing millions of small things or only a few large things. It’s about where renewable energy will likely come from in the future.

I think the unstated assumption was

> When you invest in an electric vehicle [instead of a fossil fuel vehicle that you would drive the same amount] you're investing in the future of renewable energy