"Just yesterday I heard the director of Renewable Energy Vermont on the radio explaining the fact that a switch to EVs would mean a significant increase in electricity demand. It's true."OK so far as it goes, but you're interpretation of it's significance is wrong. The concept of "baseload" power is often greatly misunderstood. Most people think it is a term related to the minimum amount of steady power required to meet constant demand on the grid. Actually, baseload power is that amount of power that is most economically produced at a steady state. This is related to the technology of generating from coal or nuclear. It is easier, and more profitable, to deal with regular overnight dips by keep the turbines spinning when demand drops than to shut them down and restart them. So we routinely produce large amounts of unused power. The increased demand from a transportation fleet will be largely met by the use of this previously produced but unused power. That is where the batteries come in, I'll get to that in just a moment...
"It is true that the electric motor is MUCH more efficient than the internal combustion motor."True.
"...a coal fired power plant is NOT much more efficient than an internal combustion engine." Actually it is, so this is not true. The average efficiency of the average internal combustion drive automobile is close to 12% while the average thermal efficiency of a coal plant, including line losses, is closer to about 38%.
"...switching to EVs only moves the point of pollution from the car to the power plant..."Again, not true (see the first claim you made). Your conclusion doesn't follow even if all your predicates were true. Just the efficiency differential is enough to make a reasonable person refrain from reaching the conclusion you've arrived at. Why would you dismiss it in such an out of hand fashion if you weren't bent on reaching a predetermined conclusion?
"...Saying we just need better batteries is not true...."Yes, it is true. To continue from the first point above. The batteries are used to store the excess power generated by the system. There is hardware and software that allow the driver to program the car with information related to preferences. These preferences control the buying and selling of the electricity in the car's batteries. So, if I drive 30 miles round trip each day, but I have battery storage for 150 miles of driving (just in case), then I might want to buy that cheap electricity at night, store it in my batteries, and then sell 100 miles worth back to the utilities during peak demand during the day. This "peak shaving" by storage is great since it allows the movement of electricity to meed demand not only across space, but also across time. This 4 dimensional distribution capability is the key element in cost effective use of renewables to totally displace both fossil fuels and nuclear power.
Now, no offense meant, but the objections you are throwing up are a standard set of arguments that are pushed by the right wing. I'm not saying you are a right winger (I often fail to make this point clearly enough) but you are, in fact, presenting the point of view that is "message managed" by the right wing think tanks. Their intent is to stop the use of renewables to replace fossil fuels and they have no interest in the truth and accuracy of the message they use to do this. The misinformation related to renewables and their capabilities is intentionally created and disseminated by the very same people as created the misinformation campaign against global warming - and for exactly the same reasons.
If you don't believe me, I encourage you to go to
http://www.heritage.org/ and search for some of the topics we've discussed. You'll most often find them in relation to discussions about nuclear energy or the folly of climate change.
You may also want to see what sourcewatch has to say about them:
http://www.sourcewatch.org/index.php?title=Heritage_FoundationI'd also strongly urge you to make use of this website as a starting point for accurate information related to the various energy technologies.
http://www.ucsusa.org/I'd especially recommend you read this. It is proof of the efforts by fossil fuel interests to spread the disinformation I'm talking about:
http://www.ucsusa.org/search.jsp?query=smoke+mirrors+hot+air&submit=SearchScroll down to choice #8 and download the entire 1.8Mb file titled Smoke, Mirrors & Hot Air: How ExxonMobil Uses Big Tobacco's Tactics to Manufacture Uncertainty on Climate Science
This is also a decent description of the role of storage.
http://news.cnet.com/8301-11128_3-9977209-54.html