Can alternative vehicles still play a role?

A couple of Google engineers shocked the world last week by announcing that after working on the RE<C (Renewable Energy Cheaper Than Coal) Initiative for four years, they had concluded that renewable energy is never going to solve our carbon emissions problem.

In a widely read article in IEEE Spectrum, the prestigious journal published by the Institute of Electrical and Electronics Engineers, Ross Koningstein and David Fork announced that after working at improving renewables on the Google project, they had decided that it wasn’t worth pursuing. Google actually closed down RE<C in 2011, but the authors are just getting around to explaining why.

At the start of RE<C, we had shared the attitude of many stalwart environmentalists: We felt that with steady improvements to today’s renewable energy technologies, our society could stave off catastrophic climate change. We now know that to be a false hope.

Google’s abandonment of renewable energy raises the immediate question: What about the effort to reduce carbon emissions from vehicles? And here the news is much better.

Although everyone concentrates on coal and power plants, they regularly forget that half our carbon emissions come from vehicles. It’s typical that Google’s RE<C effort didn’t address what to do about our cars. It’s too complicated to try to control the emissions from 200 million point sources.

But what’s never discussed is the fuel that goes into these vehicles. It’s well known that ethanol and methanol cut carbon emissions compared with gasoline. That’s a good chunk of the battle right there. But it doesn’t even take into account the possibility of making both fuels from non-fossil-fuel resources, so that both would be all pluses on our carbon budget.

Ethanol, as currently produced in this country, is synthesized entirely from corn, so there is no fossil-fuel element involved. Ethanol currently takes up 10 percent of all the gasoline sold is this country, but it is currently marketed at 85 percent ethanol in the Midwest, with only a 15 percent element to guarantee starting on cold days.

Methanol is generally synthesized from natural gas, so there is still a fossil-fuel element there, but there is always the possibility of making methanol from non-fossil sources. Municipal waste could easily be converted directly to methanol.

And of course there is always the possibility of synthesizing ethanol and methanol using renewable energy. People always talk about storing wind or solar energy as hydrogen, but methanol would be easier to store than hydrogen since it is a liquid to begin with and not subject to leakage and escape. Methanol can be easily stored in our current infrastructure.

The Chinese are currently building six methanol plants in Texas and Louisiana to take advantage of all the natural gas being produced there. All this methanol is slated to be shipped by tankers back to China, where it will be used to boost China’s own methanol industry — and to run some of the 1 million methanol cars the Chinese have on the road.

Yes, the Chinese are far ahead of us when it comes to using methanol a substitute for oil. But there’s a scenario that will introduce methanol in the American auto industry. With all this methanol on hand in Texas and Louisiana, someone will install a pump on one of the premises for dispensing methanol. Cars at the site will use it. Then someone will say, “Hey, why don’t I use this in my car at home? It’s cheaper.” Before you know it, there will be a contingency to have the EPA decide that methanol can be used in automobile engines the same as ethanol is currently used. And in the end, we will have large quantities of methanol substituting for foreign oil.

Is it a dream? No more unrealistic than the dreams that kept the Google scientists occupied for four years.