Denmark isn't currently geared to use electricity from wind mills to recharge electric cars. Well you can fill your battery of cause, but you can't choose to do it at specific times at reduced cost or by wind only. We really do need to get a system in place that can have variable rates.

You will need to burn a whole lot of fossil fuels to make batteries for every car on the road. Thats always ignored by proponents of electric cars who conveniently ignore the fact that batteries manufacturing processes are very dirty and use a number of toxic materials.

You also need a lot of energy to make a car, or to build a combustion engine. Yes, battery driven cars are particularly polluting to produce, but a couple tanks full of gasoline will make up for the difference.

http://www.forbes.com/sites/jamesconca/2013/07/21/are-electr...

My (implied) point was that for every engine / machine that runs on gas / coal, there's an electric alternative. If the goal is to adopt 100% clean / renewable energy, we should count the electricity needs as the current electricity consumption + the electricity we need to run the replacement engines / machines. And that number is going to be significantly higher than wind can deliver.

Apparently you're wrong and we haven't even gotten to other sources such as hydro and solar.

Hydro (and geo-thermal) are good, but not universally available. Nor California, nor Israel would find it as an option. In opposite, both are desalinating the water using fossil fuels, just to cover basic needs.

Solar sounds much better; and its potential crop is much higher than wind.

Also, I am not saying that clean/distributed energy system is impossible. I am saying that the metric used in the article is misleading.