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Tag Archives: supply and demand

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Several years ago, when former Treasury Secretary Lawrence Summers walked past me, I stopped him with a question. “What is the most important economic idea to teach my students,” I asked. Without missing a beat, he said, “the power of the market,” and continued walking.

Now, with an ethanol mandate from Congress, I keep thinking, “the power of the market.”

Here is the story. We have to start with the power of Congress before we get to the market.

In 2007, Congress passed the Energy Independence and Security Act. Hoping to mandate more use of biofuels, they established quotas and subsidies. One goal was to increase ethanol use from 2008-2022. On the production end, they mandated the amount of ethanol to be increasingly produced and then blended into gasoline. With a 46 cent per gallon subsidy, they made ethanol production cheaper until 2011.

Make sense? It is not quite working out how they planned. The market has been colliding with the “commands” from Congress.

One problem has been that the price of corn responds to market supply and demand. A lot of US ethanol is corn based. More expensive corn can increase the price of ethanol production.

Congress has also not been able to control the price of credits called RINs. Through RINs (Renewable Identification Numbers), the EPA makes sure that the required amount of ethanol is blended into gasoline. Simply (if possible) explained, RINs accompany every batch of ethanol. Gasoline blenders can sell RINs if they blended more than required to blenders with less. Ultimately, they hand them in to the government to prove compliance. Demand and supply affect the RIN price. The RIN price is currently soaring.

Then also, we have the price of gas. A result of demand and supply, when price is high, people tend to buy less. But, if they buy less, then they will not be consuming the annual amount of ethanol that Congress mandated (13.8 billion gallons of ethanol during 2013; 14.4 billion gallons during 2014). But ethanol producers and blenders have to create a certain amount, no matter how much consumers buy.

Sorry this sounds so convoluted. But it takes us back to Secretary of the Treasury Summers. The power of the market is reducing the power of Congress.

Sources and Resources: If you really want to learn about how Congress mandates ethanol production, this 2009 report is only a page or so and easy to understand. It ideally complements recent articles, here and here, on market distortions that resulted from the Congressional ethanol mandates interacting with market forces of demand and supply.

Please note that this entry has been minimally edited since it was posted.

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Industries afflicted with Baumol's Disease have slower productivity growth.

The price system is rather amazing.

Please imagine for a moment that you heard a gallon of gasoline was $1.50. First you would think, “cheap!” Then you might rush to fill your tank. Or, told that a diamond ring was $50, you might not buy it.

Price fluctuations are called a system by economists because they move predictably in markets. Prices can be incentives and quality barometers and used to measure productivity and profitability. Just one number, a price can say so much. But not always.

And that takes us to hips.

What if you were told that a hip replacement could cost $11,000, $125,000, or somewhere in between? Sort of like learning that a wagon could be purchased for 1000 Continentals, you would not really know that those prices mean.

Recently, several college students called 102 hospitals to see how much a hip replacement would cost for their fictitious grandma without insurance. Not getting many price requests, most hospitals were not sure how to respond. When the students finally got the information, the disparity was massive. Not only did price range from $11,000 to $125, 000 but also there seemed to be no normal tie to demand, supply or quality.

In another study, researchers found appendectomies could cost anywhere from $1529 to $182,955. As for the emergency room, a study revealed that a visit for a headache could cost anywhere up to $17,797 but as little as $17. A sprained ankle? $4 to $24,110.

You know where this is going. Lacking the normal signals of the price system, medical care creates alternative incentives. And therein lies our problems.

Emergency Room Charges

Sources and Resources: Interesting Washington Post articles here, here and here discussed each of the three studies. Gated, here, here for hips and appendectomies and not gated here for emergency room visits, are the formal articles with all of the details. Connecting the US health care system to moral hazard, this econlib article explains the incentives that artificially low prices create.

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env eco

By Amy Tourgee, guest blogger, Kent Place School alumna and Environmental Studies undergraduate at Princeton University

One aspect of environmental science that has always been scary to me is the intense interconnectedness of a system.  For example, an ecosystem can be made up of millions of species, yet the removal of even one species can cause a collapse of the whole ecosystem. Scary, right?  And the same can be said for a social or economic system.

This complexity is similar to the “butterfly effect,” a chaos theory, which describes how a tiny disturbance can cause large and unintended consequences.  And if any of you out there have seen the movie/psycho thriller The Butterfly Effect, with Ashton Kutcher, you know how truly terrifying this can be…. that movie still haunts my nightmares.

Unfortunately, the butterfly effect comes into play even when solutions to environmental issues are implemented.  Recently, laws in the U.S. and Europe have called for a higher use of biofuel in cars.  While increased use of biofuels appear to be a good alternative to fossil fuels, it has had negative effects in Guatemala.  Land that was once used for growing food has been converted to land used to grow crops for biofuel because it is often more profitable.  This change in land use has driven up prices for food in Guatemala, which imports about half of its corn.

As someone who wants to eventually pursue policymaking for environmental issues, situations like this frustrate me and are a harsh reminder that no policy decision is a panacea.

Economic Lesson

The situation in Guatemala is a classic case of supply and demand on a larger scale.  The demand for corn remains the same yet the supply decreases, which creates a higher equilibrium price.

P.S. Next week I will begin blogging from Kenya! I will be studying abroad there next semester so stay tuned for my blog on the sustainability, biodiversity (so many elephants!) and culture of the country.

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