Center for Business & Public Policy
Collaborative blog exploring the relationship between market forces and public policy.

Recent debate at the state and national level has focused on whether to enact a climate policy to control greenhouse gas emissions such as carbon dioxide.  The fact is, however, that we already have policies that affect such emissions, whether we like it or not.  Such policies can be coordinated and rational, or they can be piecemeal, inconsistent, and counter-productive.  Almost any policy designed to improve energy security, for example, would likely affect oil prices and energy efficiency, just as any policy to encourage alternative fuels would also affect energy security, electricity prices, consumer welfare, and health!  Here is a guide for thinking about how some of these policies work, and which combinations might work better than others.

The most obvious existing policy that affects carbon dioxide emissions is the gasoline tax that applies both at state and federal levels.  If that tax encourages less driving and more fuel-efficient cars, then it also impacts urban smog and global warming as well as protecting us from the whims of oil-rich nations with unstable governments.   In fact, with respect to the price at the pump, a tax on emissions would look a lot like a tax on gasoline, and vice versa.  Averaged over all state and federal taxes, the U.S. gasoline tax is about $0.39 per gallon, far less than around the rest of the world.  Most countries in the OECD have a tax over $2/gallon.

For the most part, the U.S. has chosen to avoid tax approaches to energy and environmental policy and instead uses various mandates, standards, and subsidies.   Cars sold in the U.S. are required to meet emission-per-mile standards for most local and regional pollutants like fine particles, sulfur dioxide (SO₂), nitrous oxides (NO_X), and volatile organic compounds (VOC) that contribute to ozone smog.  Those rules make cars more expensive but have successfully cleaned the air in major cities and around the country.  They also have the side effect of reducing greenhouse gases.  Another mandate is the “Corporate Average Fuel Economy” (CAFE) standards that require each auto manufacturing company to meet a minimum for the average miles-per-gallon of their fleet of cars sold each year.  For each big gas-guzzler they sell, the company needs to sell more small fuel-efficient cars to bring the average back down.  To meet this standard, every car company must raise the price of their gas guzzlers (to sell fewer of them) and reduce the price of their small fuel-efficient cars (to sell more of them).  The effect is the same as having a tax on big cars and subsidy on small cars.

These energy and environmental policies are also intricately related to other tax policies, as well as government spending!  For any chosen size of government and overall tax bite, any dollar not collected in gasoline tax is another dollar that must instead be collected from payroll taxes, income taxes, corporate profits tax, or state and local sales tax.  When looked at through that lens, gasoline taxes may not be that bad – or at least not as bad as some of those other taxes we must pay instead. 

Every state and local government is also worried about the pricing of electricity by huge electric companies that might naturally have monopoly power over their customers.  Production efficiency requires a large plant, so a small remote town might be served only by one power company (with no competition from neighbors far away, since too much power is lost during transmission).  So the public utility wants to regulate electricity prices, perhaps with block pricing that helps ensure adequate provision to low-income families.   Yet the pricing of electricity inevitably affects electricity use, which affects coal use, urban smog, and greenhouse gas emissions.  These policies are intricately related.

And these policies are related to government spending, since they affect car and gasoline purchases and therefore required spending on roads and highways as well as train tracks and mass transit in cities.  These environmental and energy policies affect human health, and therefore health spending by government – as necessary to pay for additional illness caused by emissions from cars, power plants, and heat from burning fossil fuel. 

We have no way to avoid these inter-connections.  You are a consumer who wants lower gas taxes and electricity prices, but you also own part of the power company and auto manufacturers through your mutual fund or pension plan.  You pay other taxes on income and purchases, and you breathe the air, so you are affected by emissions and need health care.  We might as well think holistically and act for the good of everybody, because we are everybody!

A recent NY Times has an article about SOL Austin, an acronym for Solutions Oriented Living.  This housing development is interesting for at least two reasons.  First, the designs and materials are intended to be “sustainable” (whatever that means), but also “net zero” (which I gather means that it will produce all the energy consumed).  The houses have solar panels and geothermal wells.

Second, however, it is interesting because it is in east Austin, the low-income part of town.  In fact, a 1928 “city plan” decided that east Austin would be “designated African-American”.  The 1962 construction of Interstate I-35 further divided east from west.  The relatively flat east side of Austin had all the industrial blight, pollution, and low-income housing.  In fact, it was quite cheap!  The hilly west side of Austin had the fancy new upscale houses with views of the Hill Country.

One would think that the intellectual-academic, left-leaning, high-income households of west Austin might be more interested in sustainable housing that could go “off the grid.”  Why then are these developers building super-energy-efficient houses in east Austin?

Well, for one thing, the 2010 census showed a 40% increase in east Austin’s white population and a drop in minority population.  In correlated fashion, land prices in east Austin have risen considerably.  In fact, a different article in the NY Times tells about a study based on the 2010 census finding that all residential segregation in U.S. cities has fallen significantly.  Cities are more racially integrated than at any time since 1910.  It finds that all-white enclaves “are effectively extinct”.  Black urban ghettos are shrinking. “An influx of immigrants and the gentrification of black neighborhoods contributed to the change, the study said, but suburbanization by blacks was even more instrumental.”

Since I’m visiting here in Austin, Texas, it is easy enough to go see the new development.  As you can see in the snapshot below, the houses have a modern box-like style.  They range from 1,000 to 1,800 square feet.  That explains the article’s reference to “matchbox” houses.    But the roofs are sloped enough to hold photovoltaic arrays and to channel rainwater into barrels.  

The developers said they wanted to “examine sustainability on a more holistic level, that would not just look at green buildings, but in our interest in affordability, in the economic and social components of sustainability as well.”  As stated in the NY Times article, the developers “hammered out a plan with … the nonprofit Guadalupe Neighborhood Development Corporation, to sell 16 of the 40 homes to the organization.  The group, in turn, sold eight of the houses at a subsidized rate to low-income buyers (who typically were able to buy a house valued at more than $200,000 for half price).”  Each of those 16 subsidized homes has a photovoltaic array on the roof, though not necessarily large enough to produce all of the needed power for the house.

Of the “market-rate” houses, all sold at prices in the low $200,000’s.  Eleven have been sold, and thirteen have yet to be built.  Because of the financial and housing crisis, however, the “holistic” development ideas have not worked perfectly.  Homeowners got rebates from Austin Energy and tax credits from the federal government. So far, however, only four market-rate house owners paid the extra $24,000 for photovoltaic arrays substantial enough to fully power a house.  Only one is also heated and cooled by a geothermal well.  But they all have thermally efficient windows, foam insulation, and Energy Star appliances.

So far, only one couple paid to install the geothermal well and the extra energy monitoring system:  a systems engineer and a microbiologist.  So, “sustainability” in low-income neighborhoods might still require some gentrification.

With crude oil prices hovering near $100 per barrel, the issue of energy independence is sure to be a frequent topic in the upcoming presidential election. Don Fullerton, a finance professor and energy policy expert at Illinois, spoke with News Bureau Business and Law editor Phil Ciciora about whether the goal of energy independence is a viable one or just another pipe dream.

Is energy independence a realistic goal for the U.S.?

It seems like it’s mostly senators from oil-rich states who want to talk about oil and energy independence, because they want subsidies for the oil industry. So it’s really only for political reasons that energy independence has been hyped as an important or worthwhile goal.

If we really are concerned about reducing our dependence on foreign oil, then the implication is to tax oil, not to subsidize it! A tax on oil would discourage its use, which would have three good effects. First, it would discourage imports. Second, it would reduce drilling in the U.S., and thus help keep more oil in the ground for future contingencies. Third, it would encourage the development of other energy technologies such as biofuel, solar power, wind power and better battery technology. Those other technologies are the only realistic route to true energy independence.

Plus, there’s absolutely no way we’re going to achieve energy independence through oil because we’ve basically used up most of our oil. For all practical purposes, we don’t have much more oil. That’s why we either have to rely on other countries or switch to new technologies.

An attempt to achieve energy independence would also be a bad move for energy security, because it just says, “Let’s drain America first.” If so, we’ll be in an even worse situation later. Whatever we still have in reserve should be left there for its option value. If we did have another serious war where we really needed oil that we couldn’t import, those reserves might be good to have.

Do the new sources of domestic energy in the Dakotas and the Gulf of Mexico hold much promise for solving our energy problems?

Sure, there are some new sources of energy in the U.S. – really, natural gas and shale oil – but however much we have won’t bring us any closer to energy independence. Even if we do discover a few new fields of crude oil, it’s not going to make much of a difference.

As the price of crude rises even higher, the oil companies can go back to old and existing fields and drill a little deeper. That extraction is expensive, but it’s worthwhile if the price of oil is back near $100 per barrel. It wasn’t worthwhile earlier because the extra drilling cost was more than the oil was worth. But now that the price of crude is high enough, they can make money if they drill deeper on these old wells.

What happens to energy prices if the European economy continues to sputter?

If Europe experienced, say, a 10- to 20-percent drop in gross national product, then you might actually notice a dip in the price of oil in the U.S. But economic growth in the U.S. would also slow. So just because the price of oil might fall a little bit doesn’t make their troubles good for us, since we would be affected, too. We certainly don’t want to hope for a recession in Europe to make oil cheaper. First of all, the price wouldn’t fall that much. Second, there would be a whole host of negative implications for the U.S.

What (if anything) will bring the price of oil down again?

The only ways to get a significant change in the price of oil would be through a major recession, a major technological breakthrough, or huge policy changes. If the whole world got together and agreed to a new, stringent version of the Kyoto Protocol to reduce carbon emissions, that would have an impact. If the whole world were to reduce the burning of fossil fuels by 20 percent – that would also have an effect. But we don’t want another recession, nor will all nations agree to such a treaty.

My green choice is to get about 12 miles to the gallon.  Here is why it’s so green.

Some people think it’s obvious that I ought to buy a hybrid or other fuel-efficient vehicle.  But that’s just wrong.  Certainly some drivers should have a hybrid car to reduce emissions and energy use, namely somebody like my brother who has an hour commute each day, driving 20,000 or more miles per year.   But not everybody.   Take for example a person like me who lives near work, rides a bicycle, and doesn’t like spending hours in the car – even for a road trip to the Grand Canyon or Yosemite.  I use the car once a week for the grocery store, or a restaurant, driving less than 5,000 miles per year.

Let’s suppose a hybrid gets 50 miles per gallon, so my 5,000 miles per year would cost about 100 gallons ($300 per year).   The standard non-hybrid gets 25 miles per gallon, which would cost twice as much ($600 per year).  I’d save $300 per year in the hybrid.  But that doesn’t mean I should buy a hybrid.  A new hybrid like a Toyota Prius costs about $6,000 extra to get that great fuel-efficiency (about $26,000 instead of $20,000).    In other words, it would take twenty years for my $300-per-year savings to make up for the extra $6,000.  It’s not worthwhile for me.  If my brother drives four times as much, however, he could break even in just five years.

So far, that means I should not buy a hybrid.  Does that mean I buy the normal new car with 25 mpg for $20,000?  No!  I should buy a beaten old 8-cylinder Bonneville, which looks like a tank and gets only half the mileage!  That Bonneville may be headed for the junk heap, so it’s certainly cheaper, even if I have to pay more for gas.

But even ignoring the price of the Bonneville, I claim that the fuel-use of the Bonneville is less than the fuel use of the normal new car!  Why?  Consider the emissions from fuel used in production.  The fuel used to make the Bonneville back in 1980 is a “sunk cost”, a done deal that does not change whether that car gets junked now or later.  In other words, keeping that Bonneville off the junk heap requires no extra fuel and emissions to produce it.  But buying a new car does involve more fuel and emissions just to produce it.  Think about all the emissions from the steel mill, the tire factory, the glass furnace, and the electric generating plant that provides power for the tools and machinery to make the new car.

In other words, I can reduce total fuel use and emissions much more if I purchase the 1980 Bonneville and drive it 5,000 miles per year, than if I buy a new car with twice the mpg.  Now all I need is a bumper sticker for my 1980 Bonneville to say how green I really am!

With all the argument in Washington about how to balance the budget, a reminder is worthwhile that none of these numbers make any sense at all!  What “should” be the meaning of the government budget?  And, does any number provided by anybody actually have that meaning?

In general, a budget deficit is supposed to mean that one’s current consumption exceeds income, which would indicate a decrease in wealth.  Indeed, that’s the problem with a deficit – drawing down our wealth (which could even turn from positive to negative!).  The U.S. Federal budget numbers fail to provide such a meaning, for several reasons.

First, the Federal budget includes ALL spending, not just consumption.  Some of that spending is actually investment, such as new spending on buildings, bridges, roads, airplanes, and any long-lived military equipment.  The budget does not show the breakdown between what we really use up this year, and what spending is really investing in the future.

Second, Social Security is “off-budget”, unless you are looking at a unified budget.  Okay, I said that in a way that is intentionally confusing!  The basic problem here is that social security is SUPPOSED to run a surplus, so that we can set aside some funds from those now working to pay them when they are retired.  If it does not run a surplus to save for the retirement of the baby boom generation, then we’ll be in big trouble when the baby boom generation retires!  The current social security surplus is too small for that.  Then, however, the big problem is that the unified budget mixes the social security budget with the rest of federal spending.  So when you see a deficit in that account, it’s really worse than it looks, because it includes the small social security SURPLUS that’s already not a big enough surplus for social security to break even!

Third, the U.S. Federal Budget is confusing about what is a “Tax Expenditure” and what is government “Spending”.  A tax expenditure is really ‘spending via tax break’, as when a taxpayer gets a special credit or deduction for doing some particular activity.  The Congress could instead have accomplished the exact same thing by an ACTUAL spending program, providing subsidy to the same set of eligible individuals for doing the exact same activity.  So it really does not make much sense to say you want to cut spending and not raise taxes, because eliminating one of those tax breaks is really the same as eliminating an equivalent spending program.

Fourth, a Federal “mandate” might require a certain kind of spending by a firm.  To take a simple example, suppose some safety regulation requires construction firms to provide a hard hat to all workers.  That’s really equivalent to a tax on that firm, equal to the amount they have to spend on hard hats, where the revenue of that “tax” is spend by government on the provision of hard hats.  But then the problem is that mandates are so pervasive.  Some ‘true’ measure of the size of government would be HUGE, if we counted the dollar cost of all mandates as a “tax”, as if it were in the government budget.

If one town’s water pollution flows into another town, the two towns can negotiate a solution with no need for the state to intervene.  But if all towns are polluting all neighboring towns, the lines of communication are too complex to negotiate – requiring the state to pass a law to solve the problem.

If one state’s water pollution flows into another state, the two states can negotiate a solution with no need for Federal intervention.  But if all states are polluting all neighboring states, the lines of communication are too complex to negotiate – and it takes a national government to solve the problem.

In other words, those problems have solutions.  If one nation’s water pollution flows into another nation, then (potentially, at least) the two nations can negotiate a solution with no need for a global government to intervene.  But if all nations are polluting all neighboring nations, the lines of communication are too complex to negotiate – and no global government exists to solve the problem.

I’m currently pessimistic about two of the worst problems the world has faced: global climate change, and global financial contagion.  Both are “externalities” in the classic sense.  Each nation’s greenhouse gas emissions pollute the whole world, and the only really effective solution is a worldwide global agreement to reduce emissions.  In fact, we don’t really “need” all nations to reduce emissions; all we really need is an agreement among all nations saying that if SOME countries reduce emissions then the other countries won’t increase emissions to steal their business.  But the lines of communication are too complex to negotiate – and no global government exists to solve the problem.

Environmental policy is my usual bailiwick.  At the moment, however, I’m even more worried about global financial contagion.  It seems that one small country can have lax financial regulations that allow banks or investment companies to take on too much risk.  Or a small country can overspend, taking on too much debt.  In the olden days, that country could go down in flames, with no big problem for the rest of the world.  With tremendously increased globalization, however, all financial markets are highly integrated.  One country’s borrowing may come from any or all other countries of the world, and one nation’s problem become the world’s problem.  If banks in other countries loan to that small country, then a financial crisis in that small country may create fear about the financial well-being of the banks that lent to them, causing a run on the banks in all those other countries.  Moreover, globalization means much more trade in commodities.  If one small country faces severe financial difficulties and must cut back all spending, that reduces aggregate demand worldwide, and can spread a recession worldwide.

A strong global government could rein in the poorly managed countries by requiring larger capital requirements, careful financial scrutiny, and only tax-financed spending.  But we don’t have any such global government.  As a result, even a small country like Greece can over-spend for years without oversight.  The situation in Greece may be made worse when banks in other countries raise the rate at which Greece can turn over its debt and borrow again, making the financial situation in Greece even worse.

The problem may be caused by Greece or not.  Regardless of “fault”, if Greece any small country were to go into default in years past, then the cost would be primarily on that small country.  Now Greece could go bankrupt and impose horrible costs on the entire World?!?

Carbon Dioxide Causes Global Warming of Climatologists

Dateline: August 6, 2011, Champaign, Illinois

Researchers at the University of Illinois have discovered new environmental damages from the burning of fossil fuel with resulting emissions of carbon dioxide (CO₂) and other Greenhouse Gases (GHG).  In particular, when these anthropogenic emissions accumulate in the atmosphere and react with sunlight, they may cause climatologists to become hotter and hotter.  So far, this effect has only been observed experimentally in the laboratory, but these experiments confirm the theory among atmospheric chemists that continuation of such emissions for several decades is bound to result not only in global warming of these climatologists and other environmentalists, but also extreme behavioral events similar to hurricanes, floods, and droughts.  

The next key step of this research program, at the University, is to increase data collection quickly, in order to try to ascertain whether the recent aberrations in climatologists’  behavior is within the normal statistical variations or may in fact already by caused by the existing increases in atmospheric levels of greenhouse gases.  The stronger hypothesis, yet to be tested, is that the increased concentrations of these gasses in the atmosphere is not just predicted globally to cause agitation and warming of these environmental scientists, but that it is already having such effects.  Already, certain climatologists have experienced high blood pressure, increased internal temperatures above 98.6 degrees Fahrenheit, and occasional apoplectic seizures.  These extreme behavioral events could be occurring naturally, however, so the hypothesis is not yet proven that these events can be attributed to anthropogenic greenhouse gas concentrations in the atmosphere.  More research is required, and researchers at the University of Illinois are applying to the National Science Foundation for that research funding, which may require millions of dollars.

In my last two blogs, I wrote about ways to meet the Illinois state revenue needs, ways that might work better than the increase in the income tax.  This blog continues the list of possible “green taxes”.  In general, a green tax applies either directly on pollution emissions or on goods whose use causes pollution.  For raising a given amount of revenue, the basic argument for green taxes can be summarized by the adage: “tax waste, not work”.   That is, a tax on pollution might have good effects on the environment, because it discourages pollution.  In contrast, an income tax discourages earning income.

In early January 2011, the State of Illinois enacted legislation to raise the personal income tax rate from 3% to 5% and to increase the corporate income rate from 4.8% to 7%.  Along with a cap on spending growth, these tax increases reduce the state’s projected budget deficit in 2011 by $3.8 billion (from $10.9 to $7.1 billion).  The governor justified the tax increases on the grounds that the State’s “fiscal house was burning” (Chicago Tribune, January 12, 2011).  In my piece with Dan Karney for a recent IGPA Forum, we don’t debate what caused the fiscal crisis in Illinois, nor argue the merits of cutting spending versus raising revenue.  Instead, we just take it as given that politicians decided to raise revenue as part of the solution to the State’s deficit.  Then we analyze the use of a few green taxes as alternative ways to raise revenue.

While many green taxes are possible, we focus on four examples that have the potential to raise large amounts of revenue: carbon pricing, gasoline taxes, trucking tolls, and garbage fees.  Indeed, as we show, a reasonable set of tax rates on these four items can generate as much revenue as the income tax increase.  We apply each hypothetical green tax directly to historical quantities of emissions (or polluting products) in order to obtain an approximate level of potential revenue generation. 

In a short series of blogs, one per week, we now discuss each of the four green taxes and their potential for revenue generation.  In past weeks we covered Carbon Pricing and Gasoline Taxes.  This week we cover Trucking Toll and Garbage Fees.

Every day hundreds of thousands of vehicles crowd Illinois’s roads and highways.   Data from the Federal Highway Administration indicates that over 50,000 trucks (six tires and over) cross into Illinois from neighboring states along the interstate highway system.  While these trucks bring needed goods to Illinois, they also congest the roads, degrade the road surfaces, and fill the air with soot.  They also become involved in vehicle accidents that cost the lives of many in Illinois.  To compensate the state, Illinois can impose a toll for long-haul trucks using Illinois’s highways.  For example, a $5 per truck toll on 50,000 trucks daily would raise almost $100 million annually.  (In comparison, the existing Illinois toll road system generates approximately $600 million annually.)  The truck toll can be implemented using existing transponder technology deployed at weigh stations along the interstate highways.  (As an aside, we note, the constitutionality of state trucking tolls is not clear, because the federal government determines the rules of interstate commerce; however, major portions of the existing interstate highway system are subject to tolls, including the heavily travelled I-95 corridor in Delaware. )

Next, residents of Illinois generate approximately 19 million tons of garbage per year (or more than one ton per person per year), and 60 percent of that waste ends up in landfills.  Currently, large municipal waste landfill operators currently pay state fees that total $2.22 per ton of solid waste dumped.  But few municipalities in Illinois charge fees designed to discourage the creation of waste by residents (Don Fullerton and Sarah M. Miller, 2010, “Waste and Recycling in Illinois,” Illinois Report 2010, pp.70-80). 

However, empirical evidence shows that taxing garbage at the residential level does reduce garbage production (Don Fullerton and Thomas C. Kinnaman, 1996, “Household Responses to Pricing Garbage by the Bag,” American Economic Review, 86, pp. 971-84).  Yet the exact garbage taxation mechanism varies by program.  For instance, a fee can be levied on garbage bags themselves or on the containers that hold the garbage bags.  Regardless, a tax rate equivalent to one penny per pound of garbage would generate almost $240 million in revenue per year, or 6.3% of the expected revenue from the income tax increase.

Finally, consider a Portfolio Approach.  Remember, at issue here is not whether to raise taxes.  We presume the State has decided to raise taxes by $3.8 billion (as done already through the income tax increase).  Here, we merely explore alternative ways to raise revenue other than through the income tax. 

Anyway, instead of implementing only one of the green taxes describe above, Illinois could choose to implement several green taxes simultaneously.   This portfolio approach would keep rates low for each individual green tax, but still generate large amounts of total revenue that can add up to a large share of the total expected revenue from the recent income tax hike.  According to the numbers in all three blogs, one simple and moderate plan would combine the following green taxes and pay for more than  half of the needed revenue:  A carbon tax of $10/ton would collect $1 billion (raising electricity prices by about 7.5%), a gas tax increase of 14 cents per gallon would collect $0.7 billion (raising gas prices by about 4.4%), a trucking toll of $5 would collect $100 million, and a garbage fee of one penny per pound would collect $240 million.  Then the recent income tax increase could be cut by more than half.

Moreover, green taxes have the added benefit that they provide incentives to reduce the polluting effects of carbon emissions, gasoline use, truck exhaust, and household garbage generation.

In early January 2011, the State of Illinois enacted legislation to raise the personal income tax rate from 3% to 5% and to increase the corporate income rate from 4.8% to 7%.  Along with a cap on spending growth, these tax increases reduce the state’s projected budget deficit in 2011 by $3.8 billion (from $10.9 to $7.1 billion), according to the University of Illinois and their Institute of Government and Public Affairs (IGPA Fiscal Fallout #5).  The governor justified the tax increases on the grounds that the State’s “fiscal house was burning” (Chicago Tribune, January 12, 2011).  Dan Karney and I wrote a recent piece for the IGPA Forum, but we don’t debate the reasons for the underlying fiscal crisis in the State of Illinois, nor argue the merits of cutting spending versus raising revenue to balance the budget.  Instead, we just stipulate that politicians decided to raise revenue as part of the solution to the State’s deficit.  Then we analyze the use of “green taxes” as an alternate means of raising revenue that could mitigate or eliminate the need for increasing income taxes.

In general, green taxes are taxes either directly on pollution emissions or on goods whose use causes pollution.  In the revenue-raising context however, the basic argument for green taxes can be summarized by the adage: “tax waste, not work”.  That is, taxes on labor income discourages workers from engaging in productive activities and thus hurts society, while taxing waste discourages harmful pollution and thus benefits society.  In addition, the revenue raised from these green taxes can help the State’s fiscal crisis. 

While many green taxes could be implemented, we focus on four specific examples that have the potential to raise large amounts of revenue: carbon pricing, gasoline taxes, trucking tolls, and garbage fees.  Indeed, as we show, a reasonable set of tax rates on these four items can generate as much revenue as the income tax increase.  That is, imposing green taxes can completely fill the $3.8 billion difference between the projected baseline deficit ($10.9 billion) and the post-tax deficit ($7.1 billion). 

Yet we omit many other potentially high-revenue green taxes.  For example, the State could tax nitrogen-based fertilizers that contribute to nitrogen run-off pollution in streams, rivers, and lakes.  These omissions do not imply that other green taxes could not be implemented.  Also, the simple analysis does not include behavioral responses by consumers and businesses.  Rather, we apply hypothetical green taxes directly to historical quantities of emissions (or polluting products) in order to obtain an approximate level of potential revenue generation.  

In a short series of blogs, one per week, we now discuss each of the four green taxes and their potential for revenue generation.  This week: Carbon Pricing.

In 2008, electricity generators in the State of Illinois emitted almost 100 million metric tons of carbon dioxide (CO₂) according to the U.S. Department of Energy’s Energy Information Agency (EIA).  See the State Historical Tables of their Estimated Emissions by State (EIA-767 and EIA-906).  While the United States has no nationwide price on carbon – neither a tax nor a cap-and-trade (permit) policy – some jurisdictions within the United States have imposed their own carbon policies.  For instance, a coalition of Northeastern states implemented the Regional Greenhouse Gas Initiative (RGGI) to limit CO₂ emissions using a permit policy.  To date, RGGI’s modest effort has already generated close to $1 billion in revenue for the coalition states.

If Illinois were to adopt its own carbon pricing policy, then even a modest tax rate or permit price could raise significant revenue.  For instance, a $5 per metric ton CO₂ price on emissions from electricity producers generates about $500 million in revenue (or 14.4% of the $3.8 billion raised from the state’s income tax hike).  By way of comparison, if the extra $500 million in emission taxes were entirely passed on to consumers in the form of higher electricity bills, then the average consumer’s bill would increase by 3.75%  (where $13.3 billion is spent annually on electricity in Illinois).

Table 1 reports the possible “revenue enhancement” from the $5 per metric ton tax, along with three other pricing scenarios.  Both the $5 and $10 rates are hypothetical prices created by the authors for expositional purposes.  In contrast, the $20 per metric ton price is approximately the carbon price faced by electricity producers in Europe’s Emission Trading System (ETS).  At the $20 rate, a carbon tax in Illinois generates almost $2 billion – over half of the tax revenue from the income tax increases.  Finally, the $40 tax rate (or carbon price) is from Richard S. J. Tol (2009), “The Economic Effects of Climate Change,” Journal of Economic Perspectives, 23(2): 29-51.  It is an estimate of the optimal carbon price that accounts for all of the negative effects from carbon emissions.  At this “optimal” price, the revenue from pricing carbon in Illinois by itself could replace the needed tax revenue from the State’s income tax increase.

The usual argument against unilateral U.S. effort to cut greenhouse gas emissions and reduce climate change is that we’d impose significant costs on ourselves, with most benefits going to other countries.   Thus, we should wait for an international agreement.  By the way, an international agreement is not going to happen.  Meanwhile we wait, which means more global warming, sea level rise, and increased extreme weather events like floods, droughts, and hurricanes.   That argument may also include the claim that U.S. agricultural productivity might increase from a little global warming, and the U.S. is rich enough to protect itself against sea level rise. 

According to that logic, we can’t worry too much about damages to other countries, as we can’t take care of the whole world by ourselves.

The problem with that logic is that those costs to other countries will unavoidably become costs on us!  Take two examples.  First, a Reuters article points out that “a third of Bangladesh’s coastline could be flooded if the sea rises one meter in the next 50 years, creating an additional 20 million Bangladeshis displaced from their homes and farms.”   Some large percentage of the nation could disappear under water.  And that’s only one such nation.  Global warming and sea level rise could displace hundreds of millions of poor people.  The U.S. will find itself unable to turn its back on such a disaster, for humanitarian reasons.  Moreover, the costs would come back to haunt us in other ways, through increased wars and other political disruptions of great danger to the U.S. itself.

A second example appears in a recent NY Times article about the effects of global warming on agricultural productivity.   It starts by describing terrific recent technological advances: “Forty years ago, a third of the population in the developing world was undernourished. By the tail end of the Green Revolution, in the mid-1990s, the share had fallen below 20 percent, and the absolute number of hungry people dipped below 800 million for the first time in modern history.”  But those technological advances have leveled off, while growing demands have reflected huge growth in worldwide population and incomes.  The resulting grain price spikes have contributed to the largest increases in world hunger in decades, perhaps 925 million last year (see screen-shot).

What is the role of human-induced climate change?  The level of carbon dioxide in the atmosphere has already increased by 40 percent since the Industrial Revolution.  We are on course to double or triple this level within a hundred years.  This climate change contributes to extreme weather events.  “Many of the failed harvests of the past decade were a consequence of weather disasters, like floods in the United States, drought in Australia and blistering heat waves in Europe and Russia. Scientists believe some, though not all, of those events were caused or worsened by human-induced global warming. …  In 2007 and 2008, with grain stockpiles low, prices doubled and in some cases tripled. Whole countries began hoarding food, and panic buying ensued in some markets, notably for rice. Food riots broke out in more than 30 countries.”

The world’s population was less than 3 billion in 1950.  It is now about 7 billion, and is expected to grow to 10 billion by the year 2100. “Unlike in the past, that demand must somehow be met on a planet where little new land is available for farming, where water supplies are tightening, where the temperature is rising, where the weather has become erratic and where the food system is already showing serious signs of instability.”

Suppose the U.S. is only to look out only for itself.  Forget altruism.  Forget unilateral efforts to save the world.  Wouldn’t we merely be protecting ourselves by doing something now to reduce worldwide political instability that could result from a hundred million refugees and famines of that magnitude?