The national average for regular unleaded in the US is about $3.08* a gallon today. A year ago, it was about $3.36.
That kind of a break at the pump comes courtesy of crude oil prices that have plunged from more than $105 in July to about $85 today because of a weak global economy and ample crude oil production both in the US and worldwide.
Low crude oil and gasoline prices, along with how changing global oil markets affect both of those, have a direct effect on greenhouse gas emissions and climate change.
The cheaper gasoline is, the more people drive and use fuel, leading to more and more greenhouse gas emissions.
There are economic benefits to that, especially if it means, for example, that it costs less to transport goods across the country. But with the increased oil consumption, the climate suffers.
“People who think that you can get large economic benefits by pushing down oil prices but not have substantial climate costs are mostly kidding themselves,” said Michael Levi, a senior fellow for energy and the environment at the Council on Foreign Relations. “These are two things that go together.”
Why have oil prices dropped so quickly?
“Supply is greater than demand,” Levi said. “Weak global economy, strong global production, (and) lack of confidence Saudi Arabia will make up the difference.”
Demand for oil in China and Europe has dropped because of economic woes in those regions and the US is producing a lot of its oil domestically. Thanks to the shale oil drilling and production frenzy in North Dakota and Texas, US crude oil imports are the lowest they’ve been in more than 14 years.
Gasoline prices follow tumbling international crude oil prices, leading to the lower cost of a gallon of gasoline at the pump today.
But as for how that impacts greenhouse gas emissions, a few months of low gasoline prices aren’t likely to inspire people to rush out to buy gas guzzling SUVs right away, and energy companies aren’t likely to make any major decisions about expanding or cutting back oil exploration and production.
“Short-term price fluctuations don’t have a large impact on the kind of greenhouse gas numbers that matter,” Levi said.
Low oil prices that remain stable are what drive increased demand for oil – and which in turn could then have a bigger role in emissions, said Peter Erickson, senior scientist at the Stockholm Environment Institute in Seattle.
“If it really is a short-term effect, it may not be that significant,” he said. “It’s when the oil price stays stable for a long time and when gasoline prices stay stable for a long time when investors and especially consumers notice and make decisions based on that.”
One of the things that could affect the long-term stability of oil prices and whether they are high or low is the fate of restrictions on US crude oil exports put in place in 1975 in response to the Arab oil embargo.
A new US Government Accountability Office (GAO) report examining what might happen if the US crude oil export ban were to be lifted says global greenhouse gas emissions could increase and the environment could suffer if US oil could be exported overseas.
Part of the reason is that although international oil prices would drop, US oil prices would actually increase, encouraging more shale oil and gas exploration and production here, affecting air and water quality, the report says. And because US gasoline prices follow the international price of oil, the prices at the pumps would drop.
“It will encourage extra (oil and gas) development,” said Charles Mason, a petroleum economist at the University of Wyoming whose research for the group Resources for the Future was cited in the GAO report. “You’re going to have local (oil) producers get a higher price. That higher price will encourage keeping projects going a little bit longer that might otherwise have been shut in.”
Though the GAO reports that exporting US crude would mean more domestic crude oil development and production, it may not amount to much in terms of CO2 emissions.
Lifting export restrictions could lead to an increase in global CO2 emissions by a tiny fraction – less than 0.0007 per cent of total 2012 global CO2 emissions, or nearly 22 million metric tonnes annually, the GAO reports. Global CO2 emissions from burning energy totaled more than 32.7 billion metric tonnes of CO2 that year.
The federal government has taken no action on lifting the crude oil export restrictions, and with oil prices still dropping, experts have conflicting opinions about where crude oil prices are headed next.
If the European economy improves and China’s economy stabilises, crude oil prices will bounce back, Mason said.
If those economies don’t improve, oil prices will stay low.
“Lots of factors have suggested that demand was much weaker than maybe what the industry had been planning for,” said Andrew Logan, director of the oil program at Ceres, a nonprofit group focusing on sustainability in business. “I don’t see prices going back to consistent highs anytime soon. The picture seems like it’s going to get worse going forward.”
This may be the beginning of a new era of volatility in crude oil prices after years of stability, he said.
“You go back 10 years and the consensus was that higher oil prices were what we all wanted to see,” he said. “We’re not going back to triple digits. It recalibrates the scope of the shale (oil) boom in the US. Shale is not going away, but it may become a smaller piece of the pie for better or worse.”
And that means the US may be entering a new era of uncertainty both in the shale oil and gas fields and at the gas pump. Stay tuned.
Originally published by Climate Central. Reproduced with permission.
*All figures are in US dollars.