What is the 'shadow price' or externalities value in cost-benefit analysis?

What is the 'shadow price' or externalities value in cost-benefit analysis?

• A. A monetary estimation of non-market effects (environmental/social) to include them in evaluation.
• B. The actual market price of pollution allowances.
• C. The nominal price of a standard commodity.
• D. The tax rate on external producers.

Answer: (A)

The shadow price in cost-benefit analysis is the monetary value assigned to effects that markets don’t price directly, such as environmental quality or social well-being. By converting these non-market impacts into currency, you can compare them with costs and benefits on the same scale and make more informed decisions about welfare changes. It’s not the actual market price of pollution allowances, nor the nominal price of a standard commodity, nor a tax rate on external producers. Estimating it involves methods like willingness-to-pay studies, revealed preference techniques, or using the avoided damages framework (for example, a social cost of carbon) to express environmental and social impacts in monetary terms.

The shadow price in cost-benefit analysis is the monetary value assigned to effects that markets don’t price directly, such as environmental quality or social well-being. By converting these non-market impacts into currency, you can compare them with costs and benefits on the same scale and make more informed decisions about welfare changes. It’s not the actual market price of pollution allowances, nor the nominal price of a standard commodity, nor a tax rate on external producers. Estimating it involves methods like willingness-to-pay studies, revealed preference techniques, or using the avoided damages framework (for example, a social cost of carbon) to express environmental and social impacts in monetary terms.