Environmental Trading Game. Introduction Nutrient trading is a market mechanism used to control the amount of nutrients leaking into lakes and rivers.

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Presentation transcript:

Environmental Trading Game

Introduction Nutrient trading is a market mechanism used to control the amount of nutrients leaking into lakes and rivers. Nutrient trading is used to control pollution in more than 50 water bodies worldwide, including lakes and rivers in USA, Australia, New Zealand and Europe.

Introduction This game was developed to give people an understanding of the basic concepts behind nutrient trading. It demonstrates a simplistic textbook trading system where the economy consists of one sheep/beef farm and one dairy farm.

Format In each period, you will need to decide on a production level that will maximise your profit given the regulatory state. Three possible regulatory states: –No nutrient regulation –Nutrient limits –Nutrient trading

Game Setup Basics Please form small groups of two or three people. Sheep/beef farm please pair up with a dairy farm. Please keep the handout information within your own group - don’t show the sheet to the other group.

Assumptions Your farms are the only sources of pollution in the economy. Your goal is to maximise profit by choosing how much to produce, while complying with regulations.

The Production Schedule (1) Your handout has a production schedule similar to this one. This is an example, whose numbers are different from your schedule. Meat produced Profit from meat production -$10$0$9$12$20$22$24$23 Nutrients

The Production Schedule (2) If you reduce production from 3 to 2, your profit reduces $12-$9=$3, and your farm’s pollution reduces by one. If you increase production from 3 to 4, your profit increases $20-$12=$8, and your farm’s pollution increases by one. Meat produced Profit from meat production -$10$0$9$12$20$22$24$23 Nutrients

Comparison Total profit Sheep/beef nutrients Dairy nutrients Total nutrients No regulation Nutrient limits Nutrient trading We will use this table to compare the three regulatory states.

Scenario 1 Under no regulation Meat produced ProfitNutrients Decide on your production level under no regulation.

Scenario 1 Farm typeProductionProfitNutrients Sheep/beef8 units$277 units Dairy8 units$2711 units Total--$5418 units To maximise profit:

Comparison: After Scenario 1 Total profit Sheep/beef nutrients Dairy nutrients Total nutrients No regulation $547 units11 units18 units Nutrient limits Nutrient trading

Scenario 2 With regulation limiting nutrients Meat produced ProfitNutrients Decide on your production level with regulations in place to reduce pollution from nutrients. Each farm may emit 6 nutrient units. Trading is not allowed.

Scenario 2 Farm typeProductionProfitNutrients Sheep/beef7 units$266 units Dairy3 units$146 units Total--$4012 units To maximise profit:

Comparison: After Scenario 2 Total profit Sheep/beef nutrients Dairy nutrients Total nutrients No regulation $527 units11 units18 units Nutrient limits $406 units 12 units Nutrient trading

Scenario 3 Trading system introduced. Farms are allocated 6 allowances each. Please start negotiating with your pair farm. Work out how much you are willing to pay to buy allowances and how much you would need to be paid to sell allowances. Note: Be sure to compare your profit before and after the trade before finalising the trade.

Example trade If this farmer were producing 6 units a year and allocated 3 allowances, she would make $5 more profit from production by buying an extra allowance. She would be better off if the allowance cost less than $5. In what circumstances would the allowance seller also be better off? Meat produced Profit from meat production -$12-$1$8$14$19$24$28$26 Nutrients

Scenario 3 Decide on your production level with a nutrient trading system in place. Under a nutrient trading system Meat/ milk produced Allowances bought/sold Allowance cost/revenue ProfitNutrients

Discussion Who managed to undertake a trade? Who was the buyer/seller? How many allowances did you trade? How much did you increase your profit by?

Scenario 3 (Again) Under a nutrient trading system Meat/ milk produced Allowances bought/sold Allowance cost/revenue ProfitNutrients The world starts afresh with the same conditions as before. Trade again with another group. Can you increase overall profit?

Discussion Who managed to undertake a trade? How many groups who didn’t made a trade last round achieved a trade this time? How many groups didn’t trade this time when you did last round? Why? How much did you increase your profit by relative to the nutrient limit case? Who made more profit than last round?

Scenario 3 Farm typeProductionProfitNutrients Sheep/beef5 units$29*4 units Dairy5 units$17*8 units Total--$4612 units The optimal trade occurs when sheep/beef farmers sell 2 allowances to dairy farmers. * Exact profit split depends on individual negotiations.

Comparison: After Scenario 3 Total profit Sheep/beef nutrients Dairy nutrients Total nutrients No regulation $547 units11 units18 units Nutrient limits $406 units 12 units Nutrient trading $464 units8 units12 units

Important Lessons Trading itself does not affect environmental outcomes. Limiting nutrients can improve environmental outcomes but reduce profitability. Trading can reduce the costs of meeting a target.

Extensions What are some of the problems of shifting this type of system into the real world? How does allowance trading affect firms’ inclinations to invest in more environmental friendly technology relative to non-trading regulation? Could limiting nutrients allow a business to continue as usual, or perhaps become more profitable? Could nutrient trading?