US demand for gasoline soars as price falls

ANALYSIS: Data suggest that consumers at present are still very fickle and will consume more oil as fossil fuel prices fall

By Gerard Wynn

Weekly US gasoline demand soared to five-year highs last month, after a collapse in oil prices, in a worrying sign that previous gains in efficiency and emissions cuts may evaporate.

The final week of December saw the highest US weekly consumption in any week of the year since July 2010.

Several years of high oil prices, and the financial crisis, have driven energy savings by consumers and vehicle manufacturers.

In addition, governments have sought to curb oil imports and drive savings and carbon emissions cuts through increasingly ambitious efficiency standards for motor vehicles, planes and ships.

An important question is how far these recent savings have been hard-wired into consumer behaviour, and whether the new standards will drive long-term cuts in carbon emissions and energy consumption.

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The first data emerging after the collapse in oil prices are concerning.

The US Energy Information Administration (EIA) publishes statistics for weekly gasoline supplies and retail prices. The data may be subject to review, as a first take. The EIA says the supply data “approximately represents consumption of petroleum products”.

The chart below shows that 2014 (red line) saw the highest weekly consumption for the month of December in the past 10 years.

Last month saw the highest weekly consumption for any month of the year since July 2010. Summer is the traditional U.S. peak, as consumers drive off on summer vacations.

Just to reinforce the point, gasoline consumption in the week of December 26 2014 ranks 14th in all 523 weeks since January 2005. This higher consumption has been carried through into January 2015 (green line).


The relationship with price can be clearly seen in the next chart, which plots weekly consumption against weekly price. As pump prices have fallen, consumption has risen.


These charts are provisional, and the supply figures are approximations for US retail gasoline consumption.

But they raise very interesting questions: how far was thrift really hard-wired into consumer brains during the financial crisis; what are the implications for electric vehicles and biofuels, if a fall in gasoline price is so rapidly transmitted into higher demand; and how long will lower gasoline prices last?

The theme of our blogs is energy and carbon. And the implication for carbon emissions is concerning.

Transport emissions are very hard to drive down, compared with power generation, where zero-carbon wind and solar power are making in-roads into coal and gas-fired power capacity.

Carbon emissions in the transport sector are from millions of point sources, motor vehicles, meaning individual consumer behaviour is important.

These data suggest that consumers at present are still very fickle, and will consume more as fossil fuel prices fall.

This article first ran on, where you can find more analysis on the digital energy revolution. Gerard Wynn is an energy and climate change consultant. Follow him on twitter @gerardfwynn

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