<< Chapter < Page Chapter >> Page >

To see how marketable permits can work to reduce pollution, consider the four firms listed in [link] . The table shows current emissions of lead from each firm. At the start of the marketable permit program, each firm receives permits to allow this level of pollution. However, these permits are shrinkable, and next year the permits allow the firms to emit only half as much pollution. Let’s say that in a year, Firm Gamma finds it easy and cheap to reduce emissions from 600 tons of lead to 200 tons, which means that it has permits that it is not using that allow emitting 100 tons of lead. Firm Beta reduces its lead pollution from 400 tons to 200 tons, so it does not need to buy any permits, and it does not have any extra permits to sell. However, although Firm Alpha can easily reduce pollution from 200 tons to 150 tons, it finds that it is cheaper to purchase permits from Gamma rather than to reduce its own emissions to 100. Meanwhile, Firm Delta did not even exist in the first period, so the only way it can start production is to purchase permits to emit 50 tons of lead.

The total quantity of pollution will decline. But the buying and selling of the marketable permits will determine exactly which firms reduce pollution and by how much. With a system of marketable permits, the firms that find it least expensive to do so will reduce pollution the most.

How marketable permits work
Firm Alpha Firm Beta Firm Gamma Firm Delta
Current emissions—permits distributed free for this amount 200 tons 400 tons 600 tons 0 tons
How much pollution will these permits allow in one year? 100 tons 200 tons 300 tons 0 tons
Actual emissions one year in the future 150 tons 200 tons 200 tons 50 tons
Buyer or seller of marketable permit? Buys permits for 50 tons Doesn’t buy or sell permits Sells permits for 100 tons Buys permits for 50 tons

Another application of marketable permits occurred when the Clean Air Act was amended in 1990. The revised law sought to reduce sulfur dioxide emissions from electric power plants to half of the 1980 levels out of concern that sulfur dioxide was causing acid rain, which harms forests as well as buildings. In this case, the marketable permits the federal government issued were free of charge (no pun intended) to electricity-generating plants across the country, especially those that were burning coal (which produces sulfur dioxide). These permits were of the “shrinkable” type; that is, the amount of pollution allowed by a given permit declined with time.

Better-defined property rights

A clarified and strengthened idea of property rights can also strike a balance between economic activity and pollution. Ronald Coase (1910–2013), who won the 1991 Nobel Prize in economics, offered a vivid illustration of an externality: a railroad track running beside a farmer’s field where the railroad locomotive sometimes gives off sparks and sets the field ablaze. Coase asked whose responsibility it was to address this spillover. Should the farmer be required to build a tall fence alongside the field to block the sparks? Or should the railroad be required to put some gadget on the locomotive’s smokestack to reduce the number of sparks?

Questions & Answers

explain what is meant by cultural goods
Thakane Reply
what is economic
Olriema Reply
Study of human behavior
Allieu
what is market?
Allieu
a place where prices of goods and services are determined
Ayuba
what the word federal mean
Kabba Reply
Meaning of "movement along curve?
Lizabeth Reply
There is movement along curve whenever the 'price' is affected
Isha
its mean price is positively response as demand change and price is negatively reaponse as supply changes
Mudasir
its mean when quantity demanded of commodity changes due to a change in its price ,keeping other factors constant, it is know as change in quantity demanded.
Gyamfua
pleas wat the formula when calculating for equilibrium point
Irene
when there is increase in the price
sautil
when there is increase in demand, demand will decrease.
Shadrick
A movement along curve is a movement on the curve mainly caused by a change occured in both quantity demand and quantity supplied.
Aarohi
what is demand
Dennis Reply
unwilling to buy good quality at a particular price and a particular time
Musa
Demand is the willingness and ability to buy goods and services at different prices at a given time.
Aarohi
is production function different from psychological law of consumption?
Kshirodra Reply
why supply is not the same quantity supplied
emmanuel Reply
What is Elasticity?
Kamara
I don't even understand
Awuah
what is damand
Cletus
Elasticity is an economic concept used to measure the change in the aggregate quantity demand for a goods or service in relation to price movements of that goods and service.
Gyamfua
Demand is an economic principal referring of a consumers desire to purchase goods and service and willingness to pay a price for a specific goods or service.
Gyamfua
supply is not the same as quantity supplied, because when economic refer to supply, they mean the relationship between a range of price an the quantity supplied those price -are relationship that can be illustrated with a supply curve or supply schedule
Gyamfua
Is a science which study human behavior as a relationship between ends and scares means which have alternative uses
BOOMBA Reply
I dont think so
Mahmood
It is Economic growth and stability
Mahmood
hi
Samuel
hi
Kresperms
That's the definition of Economics by Professor Lionel Robbins
Kresperms
economics
Foday
How Economic recovery growth Planning
Mahmood Reply
Expatiate your question
Awuah
Yh
Berry
Are bonds the same as liabilities?
Anderson Reply
Demend create it own supply how?
Mahmood
what is way ofrece thinking
Mahmood
what is the Economic way thinkig?
Mahmood
what is gasoline
Deepak Reply
how to know which products demand
Deepak
in other words economic can be define as what?
Ojarigho Reply
what is the difference between economics activities and economics system
Joshua Reply
what is the difference between price elasticity of demand and income elasticity of demand
Ellen Reply
what is demand
Alpha Reply
What is demand
Musa
is a measure of responsiveness at which a consumer is willing and able to offer a particular product at a given period of time
Manu

Get the best Principles of economics course in your pocket!





Source:  OpenStax, Principles of economics. OpenStax CNX. Sep 19, 2014 Download for free at http://legacy.cnx.org/content/col11613/1.11
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Principles of economics' conversation and receive update notifications?

Ask