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Tampilkan postingan dengan label oil addiction. Tampilkan semua postingan
Tampilkan postingan dengan label oil addiction. Tampilkan semua postingan

Selasa, 07 Agustus 2012

Are Films the Answer to Understanding Energy's Complexities?

The issues and choices surrounding our use of energy have rarely been more complex than today, yet our main channels for information about them are discouragingly shallow.  The web is often more effective at spreading misperceptions than fact-based analysis.  When our visual media focus on energy, it's usually to flash bad news before flitting on to the next story, leaving behind images of burning oil platforms or blacked-out cities.  One bright spot is the recent wave of documentary films on energy topics.  Films engage us on a deeper level, and the energy challenges we face deserve such longer-form treatment. August seems like a perfect time to suggest a few of them to you.  If you're reading this blog, then I'm betting you might at least consider watching a movie about energy instead of the latest summer blockbuster.   

Although it was hardly the first serious film about energy, the recent trend seemed to start with "Gasland". For all its inaccuracies, which have been documented by groups outside industry, that film helped start a national conversation about the right way to develop the enormous unconventional oil and gas resources that new combinations of technology have unlocked. In the spirit of making that dialog more constructive and even-handed, you should also know about two other documentaries covering the same topic and region from a different angle.  To many of the farmers and other landowners in depressed counties of New York and Pennsylvania, fracking is not a curse but an actual or potential lifeline. Seeing "Truthland" and "Empire State Divide" might not convert fracking skeptics into gas industry supporters, but it should at least fill in some of the gaps left by the "Gasland's" starkly one-sided portrayal of shale gas.

Another energy film I recently ran across, "spOILed", offers a timely reminder that despite oil's many problems it remains an essential ingredient of our global civilization, providing affordable mobility and a host of products that have made our lives much easier than those of our ancestors--or of people in countries that still lack reliable access to energy.  "spOILed" is also very much a movie about the dangers of Peak Oil, which envisions a world in which declining oil production, rising demand in developing countries, and geopolitical risks create persistent and growing shortages of oil.  This is particularly sobering when combined with a sense of just how challenging it will be to obtain the services that oil now provides from other energy sources.   Unfortunately, the film's message was undermined by occasionally jarring choices of visuals, some hyperbolic claims--no indoor plumbing without oil?--and by political overtones that might limit its effectiveness with the wider audience it appears to target. 

The energy film project that I'm most excited about is one aimed consciously at finding and cultivating "The Rational Middle" in the energy debate.  According to its director, Gregory Kallenberg, it started with a TED talk following his previous film, "Haynesville", which examined the impact of shale gas in Northern Louisiana.  As I understand it, the current project consists of 10 short videos on energy, four of which have been released on the group's website so far.  From the episodes I've seen, Mr. Kallenberg's team assembled an impressive group of experts, including Amy Myers Jaffe of the Baker Institute at Rice University, Michael Levi of the Council on Foreign Relations, former Energy Information Agency Administrator Richard Newell, and Dr. Michael Webber of the University of Texas. The series is being launched with a road show featuring panels of some of the same experts interviewed in the films, starting with a session at this year's Aspen Ideas Festival.  The films are focused on information and process, rather than on selling one point of view. Aside from a few assertions in a couple of interviews, the factual presentation in the initial videos was very sound.  I expect to have more to say about The Rational Middle as additional episodes become available. 

If the we are to develop effective energy policies for the 21st century, the public's desire for clean, secure, reliable and affordable energy must be grounded in facts and figures that help us to differentiate realistic expectations from wish fulfilment.   I'm encouraged that a growing number of filmmakers seems willing to explore energy issues in the depth they deserve, with production values that will connect with today's audiences, rather than turning them off. Enjoy!

Kamis, 10 November 2011

Breaking Our Oil Addiction

In an article in today's Washington Post an official of the National Wildlife Federation was quoted linking rejection of the Keystone XL pipeline with breaking our addiction to oil. Even with the administration apparently having delayed its decision on the project until 2013--quite possibly killing it--this point merits further exploration. Just how might we go about breaking that "addiction", and when could we reasonably expect the task to be accomplished? As with everything else to do with energy, the answers to those questions must be based on facts and figures, rather than wishfulness.

The brief quote and its context imply that a decision to forgo additional supplies of oil from Canada or any other source would, by itself, move us significantly closer to breaking our addiction to oil, a rather vague phrase brought into common usage by President Bush's 2006 State of the Union address. Of course if delaying or rejecting the pipeline only results in continued or additional oil imports from other countries, that would be counterproductive from an energy security standpoint, and perhaps even from an environmental perspective. Ending our oil addiction requires more than just a real or artificial supply constraint; it calls for enormous quantities of energy from other sources, mainly for transportation, along with significant improvements in the efficiency with which we use that energy. How soon should we expect such a transformation?

Start with electric vehicles, which are essentially the only pathway by which renewable electricity sources like wind, solar and geothermal power would have any impact on our oil consumption, because less than 1% of US electricity is now generated from oil. Even if EVs turn out to be the long-term solution to our transportation needs, as I suspect, it will be many years before they can displace enough fuel demand to make a dent in our oil addiction. The current goal is to have a million EVs on the road by 2015. As ambitious as that target seems compared to current sales of less expensive hybrid cars, that would constitute just 0.4% of the 238 million cars and light trucks in the US as of 2008. Moreover, even if EVs replaced cars of only average efficiency, one million of them would displace just 31,000 barrels per day of gasoline. In other words, it would take more than 20 million EVs to save the volume of oil that the Keystone Pipeline could have delivered annually.

If we want to kick our oil habit quicker than by waiting for a hundred million EVs to turn up, we'll need an energy source that's compatible with the vast majority of existing cars, and the ones like them that will probably dominate new car sales for some time. Consider ethanol, our largest and most successful alternative energy initiative so far. Through August, ethanol accounted for 9.2% of 2011 US gasoline consumption, nearly four times its contribution in 2005. However, before we could use a lot more ethanol in our cars, in the way Brazil has, we would need to overcome some big hurdles. Raising the proportion of ethanol in gasoline above 10% creates logistical and reliability problems, and the flexible fuel vehicles that can run on nearly pure ethanol are relatively scarce. In addition, we would need to produce most of the incremental ethanol from a feedstock other than corn. With the latest disappointing crop forecast from the US Department of Agriculture, ethanol production will consume about 41% of this year's harvest. Whether or not that's already enough to cause major food vs. fuel concerns, doubling corn use for ethanol would clearly push corn prices up drastically and cause ripple effects throughout the global food economy.

The good news is that biofuels--including better fuels than ethanol--can be produced from a wide variety of non-food crops, along with their efficient production from sugar cane in the tropics. The bad news is that with the exception of cane ethanol, none of these has been demonstrated on anything close to the scale required. Two of the largest cellulosic ethanol projects under construction, POET's Emmetsburg, Iowa project and the Vero Beach, FL facility of INEOS Bio, will together be capable of supplying just 0.02% of US vehicle fuel needs. And until these plants are up and running, their owners won't know whether their economics are sufficiently favorable--even with the current $1.01 per gallon cellulosic tax credit--to provide a basis for building more and larger versions. Although some of the many competing processes for producing biofuels from non-food biomass including wood, waste, dedicated energy crops and algae look very promising, they all face major uncertainties in development and scaling-up, including the scale-up of their supply chains, and none is yet ready for prime time. That might still be the case ten years from now.

Of course there are many other fuels we could put in our cars, after some modifications, including methanol, compressed natural gas (CNG), liquefied natural gas (LNG) or possibly even ammonia. However, the production of all of these, aside from a relatively small amount of landfill gas, is currently based on fossil natural gas, and all would require major investments in infrastructure and/or vehicle fleets. For that matter, 78% of the energy content of corn ethanol comes from natural gas and other fossil fuels--it also consumes enormous quantities of water--and most of the incremental electricity consumed by the first EVs will likely be generated from gas.

Although it appears that we have ample resources of natural gas to expand its use beyond current demand, I'm not sure that's quite what environmentalists have in mind when they talk about breaking our addiction to oil. And so far we've only considered alternatives to gasoline, without factoring in the significant demand for petroleum products for moving goods by truck, train and ship, along with aviation fuels, lubricants and many other products. Together, they account for as much oil as we use in cars, with non-oil alternatives for most of them at an earlier stage than for gasoline. And while energy efficiency measures, including the substantial improvements in vehicle fuel economy that are possible on a technology-neutral basis--including shifting cars to fuel-efficient diesels--can help to reduce the size of the mountain we must climb, they can't turn it into a valley.

Taking all these considerations into account it's not realistic to imagine that we could break our addiction to oil to any great extent for at least another decade. In the interim, we should certainly pursue all options that could alter the feasibility of such a shift in the years ahead, in a manner consistent with the fiscal constraints we face. I'm also not oblivious to what that implies for greenhouse gas emissions and climate change, though I would point out that our use of oil in transportation is neither the worst emissions offender, nor the easiest high-emitting segment of the US energy economy to tackle in that time frame. In the meantime, we are committed by virtue of scale, infrastructure and fleet requirements to burn many billions of barrels of oil over the next few decades, from wherever they may come. In that light, the administration's decision on the Keystone XL pipeline could prove to be a costly misstep, no matter how much political pressure they were under to withhold approval.

Addendum: Bloomberg has put out an interesting post-decision editorial suggesting that there's no reason for the review of an alternate pipeline route to take as long as the State Dept. has indicated.