ESG post-midterm Flashcards
Explain the competitive equilibrium with a negative externality
SMC = PMC + Xternal Costs
Private Marginal Costs VS Societies Marginal Costs
MB: Marginal Benefits
The equilibrium quantity is significantly lower when we calculate in the negative externality & by default the price is much higher as well
How do we apply the marginalist principle to pollution
What are some examples of abatement?
Installation of scrubbers
waste Treatment
Carbon Capture and Storage
What does the PMB of abatement mean
The Private Marginal Benefit of Abatement is less than the Social Marginal Benefit which means that private firms are incentivized to generate less abatement
Deadweight loss under abatement
Occurs under a positive externality due to the fact that the social amount of abatement is higher than the privately produced abatement.
The social MB is higher than the private MB
How does carbon capture and sequestration work?
What are the solutions to environmental externalities?
- Internalize the externalities by unified ownership (mergers)
- Quality controls or standards
- Taxes on polluting activities
- Subsidies for abatement
- Assignment of property rights
- 1 Coasian theory of property rights
- 2 Torts/ legal remedies
- 3 Creation of a market: Trade permits allocate “pollution rights” that can be priced and traded
- Social responsibility & Utilitarian ethics
Explain internalization via mergers
When 2 firms exert negative or positive externalities on each other then the externality can be corrected by merger, possibly even increasing profits
EXAMPLE: Fishery and pulp mill
What is an externality associated with fish farming that could not be easily corrected from internalization.
Farmed salmons have escaped and passed bacteria and parasites to wild salmon reducing their numbers
Explain Cap and Trade
What does it incentivize?
Government can reduce DWL associated with pollution by setting a maximum overall amount and issuing pollution permits.
It incentivizes firm pollution reduction for those that it is easy to do and they can trade their permits
What are the different options for initial allocations of cap and trade permits?
Auctioning or grandfathering
Cap and trade makes sense when _____________?
Firms differ in their marginal benefits and costs of emission
Explain Taxing Bads
When taxing goods govmnt gets revenue, but at the cost of DWL, when taxing bads govmnt gets revenue while reducing DWL
How has the carbon tax in BC worked?
It has been creating a pogressive carbon tax $10/ton to $30/ton -> 6.67cents/litre to gas prices.
Has led to a carbon emission decrease of approximately 15%
How do we set a tax for externalities?
such that the tax = externality
PMC + t = PMC + x = SMC
What are some complaints around pollution taxes?
That they pass off the cost to consumers and that consumers may be unresponsive to the change as well as have a high cost to low income earners.
How does geography and jurisdiction impact externalities?
Whether there is global or local pollution i.e. air pollution(local), acid rain (cross-boarder), CFC and GHG (global)
Global externalities lead to lower set taxes
Need protocols
Rapa Nui people on Easter Island around 1500AD
Simple “Population” Model
- Entity reproduces without competition
- More entity there is more reproduction
- Crowding effect kicks-in
- Eventually stock of entities reaches its maximum size where growth is zero, this is “carrying capacity”
Crowding Effect
Newborn entities must compete with large existing entities stocks for survival
Carrying Capacity
When stock of entities reaches its maximum size where growth is zero
Explain the variables in the growth curve
- G is the dependent variable, growth (births - Deaths) of a stock S (independent variable)
- r is the intrinsic growth rate of the stock ( absent “competition”)
- K carrying capacity
- G/S is the growth rate of stock
- M is the point where the crowding effect is such that the change is the growth amount is zero
What is the formula for the growth curve?
G= rS (1-S/K)
When we look at the harvest curve, where could we harvest sustainably harvest 1 and 2. Where H2 is at the apex of the curve and H1 bisects it in the middle
H1, at 2 points where the stock level intersects with the curve, one will be lower than the other
H2 at one point where change in growth amount is zero, aka M where the crowding effect kicks in