Hints Of A Decline In Air Travel As Fares Spiral (NY Times travel columnist)

Note added April, 2017: A more current and in-depth treatment of the price-elasticity of U.S. gasoline usage may be found in our Sept 2015 blog post, What an Energy-Efficiency Hero Gets Wrong about Carbon Taxes. — editor.

With gas at $3.50 a gallon in April, the U.S. mainstream media is replete with stories of drivers abandoning SUV’s, hopping on mass transit, and otherwise cutting back on gasoline. Yet a year or two ago, when pump prices were approaching and even passing the $3.00 “barrier,” the media mantra was that demand for gasoline was so inelastic that high prices were barely making a dent in usage.

Which story is correct? We lean toward the more “elastic” view, and here we’d like to share some of the data that inform our belief.

I’ve been tracking official monthly data on U.S. gasoline consumption for the past five years, and compiling the numbers in this spreadsheet. You’ll find that it parses the data in several different ways: year-on-year monthly comparisons (say, March 2008 vs. March 2007); three-month moving averages that smooth out most of the random variations in reporting; and full-year comparisons that allow a bird’s-eye view.

Here’s what we see in the data:

1. Gasoline demand is trending downward, though only slightly. In the 49 year-on-year comparisons, monthly gasoline use dipped below the year-earlier level only eight times, but these include each of the last five months (see Moving Avgs worksheet in the cited spreadsheet).
2. Gasoline’s short-run price-elasticity is rising. After a low of -0.04 in 2004, the short-run price-elasticity increased to -0.08 in 2005, -0.12 in 2006 and -0.16 in 2007. (I assume an “income-elasticity” of two-thirds in calculating price-elasticity; again, see Full Years worksheet.)
3. A big reason that gasoline use kept rising until recently was the growing economy. Demand is heavily affected by economic activity. The minimum year-on-year GDP growth for any month in all four years was plus 1.7% (see Moving Avgs worksheet).
4. Another reason gasoline demand was slow to drop is that the price signal, while significant, was less than advertised. Adjusted for general inflation, the average 2007 pump price was only 54% higher than the 2003 price. Amid all the talk of a doubling or even tripling in gas prices, it’s sobering to learn that you have to go all the way back to 1998 to find the last year that the real price was just half the 2007 price.
5. The biggest market barrier of all may have been gasoline price volatility. The spreadsheet spans 63 months, allowing 62 month-to-month comparisons. In 29 of these, the price went down (see 1-yr comparison worksheet). That’s right: the average gasoline price was less than the prior month’s an astounding 47 percent of the time (see graph). Pump prices have been so volatile that consumers didn’t know whether the price three months later would be up or down. The result? American families and automakers alike found it hard to justify long-term investments in more-efficient cars. And allied policies like de-subsidizing sprawl didn’t get taken seriously.
6. Nevertheless, gas prices have now risen five years in a row and are virtually certain this year to chalk up a sixth. There hasn’t been a comparable period of sustained increases since the late 1970s.

The big takeaway for carbon taxes is that the short-run price-elasticity of gasoline demand is rising (Point #2). (The long-run price-elasticity is probably around minus 0.4, as we discuss here.) While a rising elasticity contradicts the standard economic model in which price-sensitivities don’t change much over time, Point #5 provides a reasonable explanation: gasoline prices (and energy prices in general) had fluctuated so wildly for decades, and a sense of entitlement to cheap gasoline had become so ingrained in American society, that it took a long time for households and businesses to internalize the rise in pump prices — to regard it as real.

Perhaps now, however, a line has been crossed. Maybe the trigger was the price of crude breaching $100 a barrel, or the unspooling credit crisis signaling a fundamental change in the U.S. economy. Or it may simply have been the accumulating weight of price increases noted in Point #6. Whatever the reason(s), Americans seem, finally, to be getting the message that higher gas prices are here to stay.

That’s good news for the climate, national security, and green jobs. But bitter medicine for hard-pressed families as well as business and jobs that aren’t oil-intensive but are being pulled under by gasoline-caused belt-tightening. Imagine if the price rises had been delivered not by a rapacious market but via socially determined ramped-up increases in the gasoline tax (as some commentators have proposed since the 1970s, including, with renewed urgency, after 9/11).

Americans would have had time to adapt, along with real choices such as truly fuel-efficient cars and smaller houses in more-compact developments. And the extra revenues from the higher-priced gasoline would have belonged to all of us rather than just the owners of oil reserves. Those revenues could have been returned to households and businesses via tax-shifts or dividends, and not skimmed off for private enrichment.

The analogy to a revenue-neutral carbon tax couldn’t be more clear.

Car and Driver: Plummeting Auto Sales Show Value Of Putting A Price On carbon (Wash. Post editorial)

Frustrated Owners Try to Unload Gas Guzzlers (Boston Globe)

Press contacts:
Daniel Rosenblum, Co-Director • 914-837-3956 • dan@carbontax.org
Charles Komanoff, Co-Director • 212-260-5237 • kea@igc.org

NEW YORK (May 7, 2008)

Voters yesterday rejected Senator Hillary Clinton’s proposed gas tax “holiday” and, with it, the idea that energy taxes are political poison. The resounding victory in North Carolina and unexpectedly strong showing in Indiana by Senator Barack Obama, the only presidential candidate to oppose the Clinton-McCain tax holiday, could open the door to consideration of a revenue-neutral carbon tax.

While not every election serves as a referendum on a particular policy issue, yesterday’s clearly did. The proposal to suspend the federal gasoline tax this summer was the major policy issue distinguishing Senator Clinton from Senator Obama between the April 22 Pennsylvania primary and today. The issue received extensive media coverage due to both senators’ focus on it amid widespread concern over gasoline prices. [Update – As the New York Times noted this morning, "In both states, the candidates’ final arguments centered on a summertime suspension of the federal gasoline tax, which Mrs. Clinton proposed as an economic lift for voters and Mr. Obama derided as a political gimmick."] In rebuffing Senator Clinton’s quick and simplistic fix, voters demonstrated that they will consent to a tax when it advances important economic, environmental and national security priorities.

“Voters sent a powerful message yesterday that they are not willing to sacrifice the environmental and economic benefits of the gasoline tax for trivial, short-term benefits,” said Daniel Rosenblum, co-director of the Carbon Tax Center. “Voters in Indiana and North Carolina have driven a spike through the conventional wisdom that supporting a tax is political suicide. The path is cleared for consideration of a revenue-neutral carbon tax-and-dividend approach that cost-effectively reduces greenhouse gas emissions, strengthens the economy, reduces America’s dangerous dependence on foreign oil and returns the tax proceeds to all Americans through monthly dividends,” Rosenblum said.

“These past few weeks, Sen. Obama has stood up for energy prices that tell the truth about climate damage and national insecurity,” said Charles Komanoff, co-director of the Carbon Tax Center. “The voters have rewarded Obama’s political courage and sent a clear signal to Washington that they support price incentives to conserve oil and curb carbon emissions,” Komanoff added.

As Senator Obama stated in his North Carolina victory speech last night, “the American people are not looking for more spin. They’re looking for honest answers to the challenges we face.” An honest answer to the climate change challenge includes truth in energy pricing.

The Carbon Tax Center is a non-profit educational organization launched in 2007 to give voice to Americans who believe that taxing emissions of carbon dioxide — the primary greenhouse gas — is imperative to reduce global warming. Co-founders Charles Komanoff and Daniel Rosenblum bring to CTC a combined six decades of experience in economics, law, public policy and social change.