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RYERSON UNIVERSITY Environmental Applied Sciences and Management ES 8926 ENVIRONMENTAL ECONOMICS
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Transcript of RYERSON UNIVERSITY Environmental Applied Sciences and Management ES 8926 ENVIRONMENTAL ECONOMICS
RYERSON UNIVERSITYRYERSON UNIVERSITYEnvironmental Applied Sciences and Environmental Applied Sciences and ManagementManagementES 8926ES 8926ENVIRONMENTAL ECONOMICSENVIRONMENTAL ECONOMICS
Notes for Class # 5October 12, 2011CHAPTERS 5, 6 , 7, 8
NOTES AND NOTES AND ANNOUNCEMENTSANNOUNCEMENTS
Review Quiz #1 Topics for Term Project Articles for Mid Term Essay
REVIEW REVIEW DISTORTIONS & MARKET FAILURESDISTORTIONS & MARKET FAILURES Monopoly, Oligopoly Market Structure Government Interventions
◦ Price Controls◦ Barriers to Entrance or Exit◦ Subsidies
Externalities, Social Costs◦ Pollution◦ Destruction of Habitat & Open Space
Public Goods Issues & Characteristics◦ Open Space, Access to Waterfront, Parks◦ National Defence, Local Security◦ Light houses, Broadcast Media, Education◦ Health Care
(Lack of) Property Rights◦ Depletion of Un-owned, Open Access Resources
REVIEW REVIEW DISTORTIONS & MARKET FAILURESDISTORTIONS & MARKET FAILURESPublic Goods
◦ Demand Expresses Marginal WTP◦ Derive Aggregate Demand for Public Good by
Vertical Adding MWTP at Given Quantities ◦ Env. Quality Improvements are Public Benefits
Producers of Pub. Goods Cannot Extract Full WTP From Users Because◦ Free-rider Effect◦ WTP Values Not Revealed in a Market
Typically Private Production of Public Goods Less Than Socially Desirable and Efficient.
NORMATIVE vrs POSITIVE NORMATIVE vrs POSITIVE ECONOMICSECONOMICSPositive Economics – Study,
Description, Evaluation of How Economic Systems, Firms, Institutions and Individuals Behave and Operate – How do the work? – Objective Observations and Conclusions, Supposedly “Value Free”
Normative Economics - How Should an Economy, Firms Institutions or Individuals Operate or Behave - Subjective Views and Opinions Based on Individual Values and Biases.
Measures of Efficiency Measures of Efficiency Social Efficiency – Competitive Markets
◦ Private and Public, Market and Non-market Costs and Benefits Included in Demand and Supply (Cost) Factors, and
◦ D (MR) = S (MC) = Max Net Social Value/SurplusAllocative Efficiency - Value of Benefits
Equal to or Greater Than Value of Costs Cost-efficiency - Implement the least-cost
method or means to achieve a given end, objective or benefit.
Productivity - Units of Output / Unit of Input (Labour)
TARGET LEVELS OF POLLUTION OR TARGET LEVELS OF POLLUTION OR ENVIRONMENTAL PROTECTIONENVIRONMENTAL PROTECTIONNo Release, Pristine Pure – eg. Virtual
Elimination, Zero Discharge, Bans Threshold Ambient
Concentration/Exposure Criteria◦ No Known Adverse Effects ◦ Lowest Possible Risk Levels, eg. 1: 100,000
or better Technical/Engineering Criteria
◦ LAER◦ BAT; BAT,EA; BPT
Economic Criteria - Balance Benefits and Costs
ECONOMIC MODEL FOR ECONOMIC MODEL FOR NORMATIVE TARGET-SETTINGNORMATIVE TARGET-SETTING Balance Environmental Damages With
Abatement Costs Environmental Damages
◦ Pollution Releases -> Ambient (Air, Water, Soil) Concentrations -> Marginal Dose-Damage/Response Relationships -> Populations Exposed -> Environmental, Biological, Human Health Effects -> Monetary Value Estimates
◦ Cumulative, Non-accumulative pollutantsMarginal Damage Functions Fig 5-1
◦ Total Damage = Area Under Marginal Damage Curve
◦ Some Reveal Thresholds
ABATEMENT COST FUNCTIONS -ABATEMENT COST FUNCTIONS -11“Abatement”
◦ End of Pipe/Stack Treatment◦ Process Changes◦ Input Substitutions/Changes◦ Energy, Materials Conservation and
Efficiency◦ Recycling◦ Production Reduction
Pollution Loadings = Mass/Time (kg per day)
Pollution Concentrations = Mass/Vol (gram/M3, mg/l)
ABATEMENT COST FUNCTIONS - ABATEMENT COST FUNCTIONS - 22Aggregating Marginal Abatement
Costs = Application of Equimarginal Principle◦Each Plant Abate to Same Marginal
Cost Levels to Achieve Desired Pollution Reduction
◦Figure 5-5 Horizontally Add Pollutant Reductions at Equal Marginal Cost Levels
SOCIALLY EFFICIENT LEVELS OF SOCIALLY EFFICIENT LEVELS OF POLLUTION RELEASESPOLLUTION RELEASESMarginal Damage Function =
Marginal Abatement Cost FunctionFigure 5-6Socially Efficient Levels of Pollution
are Seldom Zero Pollutant ReleasesValue of Benefits (Damages
Avoided/Reduced) =/> Abatement Costs
ABATEMENT COSTS & PROFITSABATEMENT COSTS & PROFITS Competitive Firms and MarketsPollution Damages (External, Public Costs) Result in Excess Outputs/Production (Fig. 5-7)Abatement Costs + Operating Costs = >
◦ Pollution Damages Internalized => ◦ Higher Operating Costs => ◦ Reduced Output/Production => ◦ Foregone Profits
“Competitiveness Issue”◦ Competitive Market => Reduced Profits => Plant Closures => Lay-offs◦ Monopoly/Oligopoly => Higher Prices => Cheaper Imports
FACTORS THAT MITIGATE ADVERSE FACTORS THAT MITIGATE ADVERSE ECONOMIC, FINANCIAL AND ECONOMIC, FINANCIAL AND COMPETITIVENESS EFFECTSCOMPETITIVENESS EFFECTS Ability to Raise Prices Ability/Opportunities to Reduce Input Costs
◦ Reduce, Recover, Recycle◦ Process Changes◦ Pressure Suppliers
Implementation Timing Tax System, Tax Concessions Magnitude of Abatement/Environmental Protection Costs Small Relative to
◦ Exchange Rate◦ Interest Rate◦ Labour Contracts◦ Raw Material, Energy Prices
BENEFIT-COST BENEFIT-COST ANALYSISANALYSISObjectives = Value Benefits - Costs
◦ Economic Feasibility of Single Option◦ Determine Socially Efficient Scale of Public
Project◦ Ranking of 2 or More Options
Advantages◦ Informs Public Expenditure Decisions◦ Avoid Losers ◦ Encourage Efficiency of Public
Expenditures
BENEFIT-COST ANALYSIS - BENEFIT-COST ANALYSIS - CRITICISMSCRITICISMS Justify larger budgets Avoid political discussion and debate about Public Projects Can’t Quantify or Value Benefits, Cut Public Programs Environmental resources, benefits Unpriced, Unvalued Future damages, benefits discounted Monetary values alone hide important information and social issues Env. benefits = intangible perceptions, difficult to quantify, value. Uncertainties in natural science methods, data, human behaviour, responses, methods to estimate economic values => estimates subject to wide ranges, low credibility. BCA appropriate where consequences small relative to economy as a whole. Large effects (extinctions, pollution of ocean, climate change) can alter fundamental preferences & price sets => reduce reliability of BCA for decision-making. Intergenerational sustainability of environmental resources.
BCA - FRAMEWORKBCA - FRAMEWORKDescribe Project, Program, Scale,
PerspectiveIdentify, Quantify, Value Inputs,
Outputs, Social/External Costs and Benefits
Evaluate, Compare Quantities & Values of Benefits and Costs
BCA – EVALUATION & DECISION BCA – EVALUATION & DECISION CRITERIACRITERIAEvaluation Criteria – Compare
Outputs, Results, Consequences of Options, Projects, Policies
Decision Criteria for Accepting, Rejecting, Ranking◦ B-C = Net PV Benefits◦ B/C ratio ◦ Capitalized Value, Asset Value, Internal
Rate of Return of Annual Benefits
BCA TOPICSBCA TOPICSDiscounting, Choice of Discount RateUncertainty
◦ Expected Values◦ Sensitivity Analyses ◦ Monte Carlo Techniques
Distribution, Equity◦ Horizontal, Vertical Equity◦ Proportional, Regressive, Progressive
Programs and Policies