Showing posts with label energy efficiency. Show all posts
Showing posts with label energy efficiency. Show all posts

Wednesday, March 4, 2015

Cutting emissions with rail upgrades, or, stuff white people like

Source


A lot of the discussion about carbon emissions is pretty one dimensional -- more low carbon energy means less emissions. Efficiency, when it enters the discussion, is often conflated with conservation -- which, at least to Americans, carries connotations of making do, of cutting back, of low-flow toilets, brief lukewarm showers, and long bus rides to work listening to homeless people ranting about the CIA's implants in their teeth. Somehow, this has not caught on.

It is a mistake to confuse conservation and efficiency. Efficiency can be big, bold, and transformative. For example: doubling and electrifying America's railway system.

About 39.5% of US freight is transported by rail. The vast majority of the American rail system is powered by onboard diesel engines. This is an inefficient, wasteful technology with large associated carbon emissions. Electrified rail has been around for decades, and not only allows you to power your train with zero-carbon energy from whatever source, but also decreases the energy requirement as the train doesn't have to haul a diesel engine with it. Power can be recaptured via regenerative braking, just like a hybrid or electric car.

The second major problem with the American rail system is congestion. In many areas, traffic slows to a crawl, averaging 4mph or less. The Chicago area is a particular offender:
A recent trainload of sulfur took some 27 hours to pass through Chicago — an average speed of 1.13 miles per hour, or about a quarter the pace of many electric wheelchairs.
Obviously the comparably slow speed of rail transport, due to congestion, is one of the reasons the rail system, passenger and freight, have continued to lose market share to the roads. The solution is simple: double the tracks. Most railroads in America are single-track, meaning there's no passing lane. Every mechanical problem, every delay ripples back through the rest of the system. With doubled lines everywhere a slowed or stopped train can simply be bypassed.

So what would be the cost of that? Obviously there would have to be a costly study to determine the cost, but as a back-of the envelope calculation, a recent project in Spain doubled and electrified the tracks of an existing railway at a cost of €2.125million/km. Apply that to the US railway system (ignoring the economies of scale inherent in a far larger project, and cost differences due to terrain, etc.) the cost to double and electrify the entire US rail system would be about $500 billion.

That's a steep bill, but infrastructure spending returns a lot of money to the economy with new jobs and business growth. As a comparison, the Fed's Quantitative Easing program, in which the government essentially prints money and gives it to the banks, has printed up $3.8 trillion so far, a total that continues to rise by $85 billion per month. Yes, really.

We need to think bigger. A zero-emissions future is not going to look like today. Our economy needs to be fundamentally restructured, beyond adding bike lanes and wind farms (as good and helpful as those things are.) And in the political sphere, climate hawks have been caricatured as anti-consumer, anti-growth, neo-Puritan hippies (and some are; not that there's anything wrong with that).

The people buying into this messaging and off-put by it are the white, conservative, hierarchist males. And you can resent 'em if you want, but there are a lot of them and they have a lot of power. Maybe nothing will get them on the right side of history, but if anything can, it will have to start with showing them that our dreams for our country are big, bold, and ambitious, and that the world after fossil fuels is one of abundance and hard-driving industry.

Sunday, January 8, 2012

The lonely life of the pan-energist

Florida has good, not great solar potential


I like nuclear energy (the more so since reading Burton Richter's Beyond Smoke and Mirrors), and I like Brave New Climate and their relentless championing of nuclear energy.

When I read articles like "Solar Power in Florida," though, it makes me feel lonely. Because I do not have a power source to champion. I am not a wind-and-solar guy, nor am I with the nuclear-or-bust folks. As long as it doesn't spew carbon into the atmosphere, I really don't care what it is. This not-caring rests on several bedrock principles:

1. There really are no silver bullets to cut emissions and stop climate change. Everybody admits that, but not everybody really believes it. Whether or not you agree with the details of the wedge analysis, it's deeper truth is this: there is no single technology, strategy, or breakthrough that can cut carbon emissions by 80-90% from current levels while sustaining economic growth. But many hands make light work.

2. Nothing is more obvious in the world of energy than that different technologies thrive in different circumstances. Some places are really sunny; some enjoy a nice steady wind; some have plentiful water to cool a great big pile of fissionables. Some places are ideal for large, more efficient plants; some places are way off the grid and only need a smidge of power anyway. There are great geothermal sites in Iceland; there are mighty rivers coursing through the Northwest.

Wind energy potentials


Places like Japan have already picked the low-hanging fruit of efficiency; places like the Eastern United States have a giant source of "free energy" that they can tap any time they want to by choosing sensible measures (higher mileage standards, green building codes, etc.) to implement greater efficiency. 

Japan gets two-and-a-half times the economic output from a ton of CO2

Our energy present is messy; our energy future will be messy too. Often arguments about existing sources or promising future directions get caught up in what technology has the most promise, the greatest scalability, the cheapest implementation. But the reality of energy generation is that the answer to that question will not only depend on technological advances no one can accurately predict, but on who you are, where you are, and what kind of power you need at what times.

3. There is nothing in the political universe that is as important to me as action on climate change. Some people I respect want to yoke climate change to a more general shift in our politics towards greater equality, less consumerism, more respect for the environment and a smaller human footprint. I might agree with George Monibot that the general anti-progressive trend in politics is to be deplored. But that is not the argument. I am for a wedge solutions to climate change, not climate change as a wedge issue. This is about the survival of our civilization. Everything else is secondary. So I have no problem (well, I do have a problem, but I will accept) our remaining a selfish, consumer-driven, greedy and unequal society, to the extent that we can find a way to do that without shooting ourselves in the head. Give me plentiful no-carbon energy and I will happily waste it like a good American and defer the rest of the green agenda for another day. While we don't have that, we need to think about conserving energy and becoming more efficient, and I'm fine with that too. If the no-carbon energy kills birds or generates waste or floods valleys, then I'm for facing those consequences directly and incorporating them into the cost-benefit analysis, without trying to prove that one source is clearly superior and all the others are useless or repugnant. Which you would think would be the default position for everyone but, surprisingly, not so.

COMING SOON: How the hit piece on the potential of solar in Florida misled.