Renewable energy & electric transport....

Today's post: Wednesday, 8-12-2009

We need an 80% reduction in fossil fuel use by 2050 to avoid the worst global warming effects. And, practically speaking, we need to also double our electricity generation and double the useful work done per unit of electricity & other energy sources as well during that same time to have a decent economy.

At some point, the oil that we’ve been using to power much of our economy will begin to run low enough that our world economy will shrink due to lack of supply or excessive costs or both.

Electricity generated by solar or wind power or by using heat from geothermal energy to generate electricity AND electricity generated by nuclear power all avoid releasing CO2 and using oil.

(If coal to generate electricity can be burned in a way that allows the CO2 to be sequestered or converted to biofuel that also would replace oil and allow for more electric transport. Very soon electricity generated from coal and nuclear will cost more than from solar and wind. But now it may cost slightly less; and clean coal and nuclear will need less new transmission lines as they are or can be located next to existing transmission lines.)

That puts a very high premium on electric and/or plug-in hybrid cars and trucks and on electrically powered mass transit and trains.

And to build such cars and trucks and to allow electricity needed but not currently being generated by wind or solar or to allow excess electricity generated by wind or solar at other times to be stored all require reliable, fast charging, batteries that tend not to wear out or to require replacement only after extended use.

Also, for transport, having light and compact batteries is very important.

From large companies such as SONY to smaller startups such as Tesla and Imara Corporation in the Silicon Valley and in other parts of the world, many companies are working on such improved battery technology. (Mobile electronic devices share similar battery needs with the battery needs of electric transport. So battery advances for either use may well be used by the other use as well.) We may also see the use of combinations of capacitors that can be very rapidly charged and discharged with relatively faster discharging and charging batteries that are changed more often with batteries that discharge and charge more slowly but last far longer.

In addition, the electricity for this transport will begin to need more electricity generation which increases the need for a massive increase in solar and wind and new smart grid transmission lines to connect these new sources to users. In the earlier stages this need will fortunately be less acute since car batteries in electric cars and plug in hybrids can be charged at hours of the day other uses tend to be at their lowest so existing generation capacity can be used.

Tesla, with its good looking model S all electric sedan and GM with its plug in hybrid Volt are pioneering this market. But in the same way most car companies now make hybrid cars, soon most car companies will make all electric cars or plug-in hybrids or both.

So, it looks like the market for batteries to go in these cars looks like it will be very, very big within 2 to 5 years and then grow even more.