Market Forces

Nature: The rebound effect is overplayed

By / Bio / Published: January 23, 2013

Trying to put the rebound effect for energy efficiency in its rightful place is like playing a game of wack-a-mole. Predictably every couple of years, someone new discovers the counter-intuitive appeal of showing how more efficient energy policies may lead to more energy use. Wham! Told you there’s something wrong with those clean-car standards. Well, not so fast.

Yes, the rebound effect is real. But it’s also small. And what’s there is actually positive! Why shouldn’t people who can now afford to due to more efficient energy technologies be able to improve their lives?

Together with three co-authors (Ken Gillingham at Yale, Dave Rapson at University of California, Davis, and Matt Kotchen, currently on leave from Yale to serve as Deputy Assistant Secretary for Environment and Energy at the U.S. Treasury), I surveyed a bajillion+1 energy efficiency rebound studies. Nature then made us cut down those references to 6. We settled at 9.

We couldn’t find a single study that has the rebound be above 100% or anything close to it, what’s necessary to nix energy efficiency savings. The maximum number you can get is 60%, and that’s already quite a stretch. Think 30% as the upper bound for actual behavioral responses. Yes, we are more efficient today than we were a hundred years ago, and we also use more energy today. But that’s far from talking about the rebound effect. It’s simply economic growth.

Establishing a causal link between efficiency and energy use isn’t quite as simple. In the end, the rebound effect comes in four forms. Buy a more fuel-efficient car, and driving that next mile just became cheaper. The result: a bit more driving, to the tune of 5 to a maximum of 30%, although most likely much closer to 5-10% of the initial fuel savings. Then there’s the indirect effect: Drivers may now use some of the savings to buy other products that consume energy.

You can already see that we can’t just add these two effects. If you spend some of the gas money on driving more, you have less to spend on that plane ticket, and vice versa.

Then there are two macroeconomic effects: one via the price and one via technological advances. They are the trickiest to pin down and could, in theory, be the largest. But theory lends a helping hand in getting an upper bound: the basic demand-and-supply relationship tells us that the macroeconomic price effect can’t be more than 100%.

And once again, all these effects aren’t anywhere near that threshold. 60% is as high as it gets for the combined effect, and only in rare circumstances. For the most part, it’s much closer to 5 to perhaps 30%.

So where does that leave us?

When designing energy efficiency policies like clean-car standards, consider the rebound effect, much like the government already does. The Department of Energy’s model uses a highly appropriate 10% rebound figure for the car standards. And that’s about it. Not much else to see here.

If you did want to take it a step further — full disclosure: a step I couldn’t convince my three co-authors to take in the Nature piece itself — everything else equal, the existence of the rebound effect may prompt us to use even stricter energy efficiency standards. If you have an overall target in mind, and the rebound effect shaves off a bit, you ought to consider using a slightly stricter target to get back to where you wanted to be.

For more, check out the full Nature piece. Well worth the $32 to put the rebound effect in its rightful place once and for all.

Posted in Clean Air Act, Politics / Leave a comment

Geoengineering: ignore economics and governance at your peril

By / Bio / Published: October 31, 2012

Cross-posted from Climate 411.

How serious is global warming? Here’s one indication: the first rogue entrepreneurs have begun testing the waters on geoengineering, as Naomi Klein laments in her must-read New York Times op-ed.

Sadly, Klein misses two important points.

First, it’s not a question of if but when humanity will be compelled to use geoengineering, unless we change course on our climate policies (or lack thereof). Second, all of this calls for more research and a clear, comprehensive governance effort on the part of governments and serious scientists – not a ban of geoengineering that we cannot and will not adhere to. (See point number one.)

Saying that we ought not to tinker with the planet on a grand scale – by attempting to create an artificial sun shield, for example – won’t make it so. Humanity got into this mess thanks to what economists call the “free rider” effect. All seven billion of us are free riders on the planet, contributing to global warming in various ways but paying nothing toward the damage it causes. No wonder it’s so hard to pass a sensible cap or tax on carbon pollution. Who wants to pay for something that they’re used to doing for free – never mind that it comes at great cost to those around them?

It gets worse: Turns out the same economic forces pushing us to do too little on the pollution front are pushing us toward a quick, cheap fix – a plan B.

Enter the Strangelovian world of geoengineering – tinkering with the whole planet. It comes in two distinct flavors:

  • Sucking carbon out of the atmosphere;
  • Creating an artificial sun shield for the planet.

The first involves reversing some of the same processes that cause global warming in the first place. Instead of taking fossil fuels out of the ground and burning them, we would now take carbon dioxide out of the atmosphere and bury it under ground. That sounds expensive, and it is. Estimates range from $40 to $200 and more per ton of carbon dioxide – trillions of dollars to solve the problem.

That brings us to the second, scary flavor, which David Keith, a leading thinker on geoengineering, calls “chemotherapy” for the planet. The direct price tag to create an artificial sun shield: pennies per ton of carbon dioxide. It’s the kind of intervention an island nation, or a billionaire greenfinger, could pay for.

You can see where economics enters the picture. The first form of geoengineering won’t happen unless we place a serious price on carbon pollution. The second may be too cheap to resist.

In a recent Foreign Policy essay, Harvard’s Martin Weitzman and I called the forces pushing us toward quick and dirty climate modification “free driving.” Crude attempts to, say, inject sulfur particles into the atmosphere to counter carbon dioxide already there would be so cheap it might as well be free. We are talking tens or hundreds of millions of dollars a year. That’s orders of magnitude cheaper than tackling the root cause of the problem.

Given the climate path we are on, it’s only a matter of time before this “free driver” effect takes hold. Imagine a country badly hit by adverse climate changes: India’s crops are wilting; China’s rivers are drying up. Millions of people are suffering. What government, under such circumstances, would not feel justified in taking drastic action, even in defiance of world opinion?

Once we reach that tipping point, there won’t be time to reverse warming by pursuing collective strategies to move the world onto a more sustainable growth path. Instead, speed will be of the essence, which will mean trying untested and largely hypothetical techniques like mimicking volcanoes and putting sulfur particles in the stratosphere to create an artificial shield from the sun.

That artificial sunscreen may well cool the earth. But what else might it do? Floods somewhere, droughts in other places, and a host of unknown and largely unknowable effects in between. That’s the scary prospect. And we’d be experimenting on a planetary scale, in warp speed.

That all leads to the second key point: we ought to do research in geoengineering, and do so guided by sensible governance principles adhered to be all. We cannot let research get ahead of public opinion and government oversight. The geoengineering governance initiative convened by the British Royal Society, the Academy of Sciences for the Developing World, and the Environmental Defense Fund is a necessary first step in the right direction.

Is there any hope in this doomsday scenario? Absolutely. Country after country is following the trend set by the European Union to institute a cap or price on carbon pollution. Australia, New Zealand, South Korea, and also California are already – or will soon be – limiting their carbon pollution. India has a dollar-a-ton coal tax. China is experimenting with seven regional cap-and-trade systems.

None of these is sufficient by itself. But let’s hope this trend expands –fast – to include the really big emitters like the whole of China and the U.S., Brazil, Indonesia, and others. Remember, the question is not if the “free driver” effect will kick in as the world warms. It’s when.

Posted in Climate science, International, Politics / Leave a comment

Australia’s landmark legislation will put price on carbon pollution, create world’s second-largest carbon-price system

By / Bio / Published: November 9, 2011

By Jennifer Andreassen, originally posted on our Climate Talks blog.

As expected, Australia’s upper house of Parliament voted yesterday to adopt a carbon price, which will compel Australia’s largest polluters, beginning July 1, 2012, to pay for their carbon pollution.

Australia will have the largest carbon-price system in the world outside Europe's, after its upper house approved the Clean Energy Future package of bills Nov. 8. The package of bills aims to cut emissions from coal-dependent Australia 80% by 2050 from 2000 levels.

The legislation’s passage will give Australia, which has the highest per capita emissions of any developed country in the world and uses even more coal than the United States, the largest carbon-price system in the world outside of the European Union. (That is, the largest outside the EU until California’s program takes effect in January 2013; California last month approved the largest, first-ever economy-wide carbon market in North America, which could eventually link to other sub-national, national and regional markets around the world.)

EDF applauds Australia on its leadership on the vitally important problem of climate change. This vote is another indication that more and more countries around the world – with the U.S. being a notable exception – are taking climate change seriously. The legislation also backs Australia’s international commitment to reduce emissions by between 5 and 25 per cent by 2020 from 2000 levels.

The Clean Energy Future Package

The Clean Energy Future package is made up of 18 bills that will assign a price to carbon starting July 1, 2012 and cut Australia’s emissions 5% below 2000 levels by 2020 (though the target can be strengthened based on science or international action), and 80% below 2000 levels by 2050.

Australia’s 400-500 largest emitters will be covered by the carbon price, which will take the form of a fixed price (starting at A$23 per metric ton) for the first three years, and shift to a carbon market emissions trading system in 2015.

As we mentioned when Australia’s lower house passed the clean energy legislation on October 11, the Clean Energy Future package will shift Australia’s energy towards cleaner and renewable sources by:

  1. Placing a price on carbon.
  2. Creating a market-based system with plans to link it with ‘credible international carbon markets or emissions trading schemes in other countries’ – like New Zealand and Europe – after 2015.
  3. Giving a big boost to renewable energy research and development and deployment through a new $10 billion financing vehicle, the “Clean Energy Finance Corporation.”

(The Southern Cross Climate Coalition has some more details on the legislation in its analysis, as does Natural Resources Defense Council’s Jake Schmidt in his post Congrats Australia! Law passed which will require mandatory carbon pollution reductions for major polluters.)

Climate groups in Australia welcomed the passage of the laws, as did:

Australian Prime Minister Julia Gillard, who told reporters:

Today we have made history. … This is about what’s right for the nation’s future.

Deutsche Bank Australia carbon analyst Tim Jordan, who said:

This is a very positive step for the global effort on climate change. It shows that the world’s most emissions-intensive advanced economy is prepared to use a market mechanism to cut carbon emissions in a low-cost way.

CEO of The Climate Institute John Connor, who said:

This is a vital cog in Australia’s pollution reduction machinery with the potential to help cut around 1 billion tonnes of carbon pollution from the atmosphere between next year and 2020.

This vote means Australia now brings greater credibility going into international climate negotiations starting later this month in South Africa. It also puts wind in the sails of other jurisdictions about to introduce, or considering, emissions trading schemes which similarly price and limit carbon pollution.

The G20 Cannes Action Plan for Growth and Jobs even highlights the Australian legislation as an example of how members will “enhance competition and reduce distortions” in its plan to create “sustained, broad-based reforms to boost confidence, raise global output and create jobs.”

What’s next for Australia

Now, the Government moves into implementation mode, which means it will take to:

  • Establishing new institutions, including the Climate Change Authority (to recommend on future emissions targets); the Clean Energy Finance Corporation; and the Clean Energy Regulatory to oversee the market;
  • Finalizing contracts next year to close 2000 MW of brown coal power generation;
  • Working with New Zealand and EU officials on linking schemes after 2015.

Linkages to international carbon markets that are built into the system will also see Australia become a key player in the international offset market.

And Australian officials will be able to hold their heads high at the UN climate conference in Durban at the end of this year, as they promote their joint proposal with Norway for a roadmap to a 2015 global climate treaty.

Posted in Cap and Trade Watch, International, Politics / Leave a comment

Single-action bias

By / Bio / Published: August 9, 2011

We all want to do something, anything. We don’t just want to sit idle and watch events unfold around us. Call it “action bias.”

Then there’s “single-action bias.”

We all want to do something, anything, but once we’ve done that one thing, we move on. For something as intractable and complex as global warming, that’s a real problem.

Yes, replace your inefficient incandescent light bulb with more efficient compact fluorescent ones, but don’t believe for a second that single action solved the problem.

Recycle. Just don’t think it’ll stop global warming. Make the planet notice.

For daily musings like these, take a look at EDF economist Gernot Wagner’s personal blog.

Posted in 1000 words, Climate science, Politics / 2 Responses

Newsflash: Clean Air Act saves lives, boosts GDP

By / Bio / Published: February 11, 2011

We have sometimes been the bearers of bad news on jobs in the past. Not bad news, really. Realistic news. So excuse me for being a bit giddy at the sight of the latest piece of very realistic—and very good—news.

The EPA just released a new White Paper that turns out to be as green as it is red, white, and blue.

Lives and health at a bargain price

First, it starts with what really matters when considering the impact of the Clean Air Act—health and the corresponding social and economic benefits:

  • 18 million child respiratory illnesses prevented in 1990 alone,
  • 200,000 lives saved that year (160,000 in 2010),
  • total benefits outpacing costs 30:1 since 1990.

These are the key figures we need to keep in mind. Always.

Healthy kids means a healthy workforce

For anyone who isn’t yet satisfied but worries about the economic impact of the Clean Air Act, there’s more good news:

Protecting children from neurotoxins leads to workers with higher IQs.

That should be an obvious statement. It also turns out to come with real economic benefits. The latest study by Harvard’s Dale Jorgenson et al shows that the Clean Air Act has boosted productivity and growth:

GDP in 2010 is 1.5 percent higher than it would have been without the Clean Air Act.

Again, that’s GDP. Hard economic growth. The number that measures everything except that which makes life worthwhile.

Clean and competitive

Lastly, the paper concludes with a look at competitiveness concerns. The verdict: the Clean Air Act does not harm competitiveness.

That’s not as strong as saying that the Clean Air Act improves U.S. competitiveness. Improving productivity also improves competitiveness, and combining the standard competitiveness arguments with Jorgenson’s productivity results may well show that to be the case.

But no one to my knowledge has done that yet credibly. (Of course, I’d love to be proven wrong on that point.) To the full credit of EPA and the credibility of its analysis, the paper does not go that far either.

The White Paper stays well within the mainstream of economic analysis of the Clean Air Act and bears plenty of good news for health, wealth, and the planet.

Read it at your own peril. It may well be the first piece of economic analysis that makes you giddy yourself.

Posted in Markets 101, Politics, Technology / 1 Response

Carbon trading grows up

By / Bio / Published: January 28, 2011

Cross-posted from Reuters AlertNet.

When someone robs a bank, nobody challenges the legitimacy of banks. They suggest instead that the bank find better security. Why should carbon markets be any different?

Wednesday last week the European Commission (EC) discovered cyber thefts of carbon allowances valued at around €30 million from accounts in a handful of member states. It promptly halted all trading in its nearly €130 billion/year market until the holes could be plugged, accounts could be cleared, the stolen allowances could be traced by their unique identifying numbers, and culprits could be identified.

The fact that some trading registries are apparently less secure than your Facebook account is a clear problem and points to serious underinvestment in market infrastructure and security.

It certainly does not call into question, however, the idea of carbon trading, although some opponents of carbon markets have taken that step. These people range from outright climate deniers—those who can’t even admit we have a global warming problem—to those who believe that markets aren’t the most efficient way of addressing climate change, to those who can’t capitalize on the carbon market’s opportunities.

Let’s be clear: Putting a firm limit on carbon pollution, and providing polluters with flexibility in determining how to reduce pollution—including through transparent trading of pollution allowances—is fundamentally the best way to combat global warming pollution.

This basic fact is not changed by a €30 million theft of carbon credits that might have been prevented through a €10 thousand investment in security software and better computer hardware. Although not perfect, markets are the most rational and efficient way of allocating resources toward filling a specific need. Every stock exchange on the planet faces attempted cyber attacks, and most are well equipped to deal with them.

A day after the theft was discovered, the EC released a wholly separate, long-awaited decision to stop accepting pollution credits generated by destroying trifluoromethane, HFC-23, and nitrous oxide. Opponents of carbon markets seized on this announcement as further evidence that carbon trading markets aren’t working.

But actually, the EC’s decision to stop accepting these credits is the right move. HFC-23 was originally developed as an alternative to ozone-depleting chlorofluorocarbons. HFC-23 is a potent global warming gas, and destroying it helps the climate.

However, trading in HFC-23 credits creates perverse incentives. With a high enough price for carbon credits, it could make economic sense to build factories that produce HFC-23 for the sole purpose of destroying the gas and collecting credit for doing so. A better way for dealing with HFC-23 would be to subsume it under the successful Montreal Protocol, which is working to repair the hole in the ozone layer.

The coincidence of the EC’s decision to stop trading HFC-23 credits and the temporary suspension of trading on the heels of the carbon allowance theft, gave opponents of trading the opportunity to launch a two-pronged critique of carbon markets. But barring HFC-23 credits from entering the EU system can only be applauded—it’s entirely in the spirit of putting a firm upper limit on carbon pollution.

These two events highlight the carbon opportunity for the EC going forward. The emissions trading system has already proven its worth as the centerpiece of European efforts to cut global warming pollution. By improving the technical security of its trading program, the EC can assure investors that no more emissions allowances will be purloined.

And by closing its carbon market to credits from one-off HFC-23-type projects of dubious environmental value, and instead linking the EU market with jurisdictions that establish high-quality cap-and-trade systems, the EC can strengthen its own market and challenge others who are developing similar policies—from New Zealand to Tokyo to California, and beyond—to follow suit.

In the end, that’s all that counts—and the only thing the planet truly notices.

Posted in Cap and Trade Watch, International, Politics / Leave a comment