Lecture 3: How Should We Join Climate Change to Energy Policy?
MIT OpenCourseWare · 1:20:33 · Yesterday
Energy policy should abandon rigid "zero-carbon" targets in favor of a flexible cost-benefit framework, as the economic cost of removing the final units of carbon is prohibitively high and climate damage projections remain scientifically uncertain.
- Nuclear viability — Nuclear power is expensive, meaning its deployment is only justifiable if motivated by the need to reduce carbon emissions .
- Diminishing returns — Abatement costs are negative initially, as efficiency gains save money, but they eventually become astronomical, making a "zero-carbon" goal economically irrational .
- Climate sensitivity — The expected warming from doubling atmospheric CO2 has a range of 1.8°C to 5.6°C, a level of uncertainty that has not narrowed in over 125 years .
- Expert bias — Climate projections often rely on subjective expert judgment rather than hard statistical data, leaving models vulnerable to group heuristics and bias .
- Optimization limits — It is mathematically impossible to simultaneously minimize cost, carbon emissions, and social inequality, forcing policymakers to accept trade-offs rather than perfect solutions .
- Market targets — Theoretical market-based policy aims for Pareto optimality, which maximizes economic efficiency but offers no inherent mechanism to ensure social justice or equity .
- Utility paradox — Value is context-dependent and subjective; money is not a universal metric for human utility, which complicates balancing trade-offs across different economic classes .
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