What Climate Impact Means in Dollar Terms
Every tonne of CO2 released into the atmosphere causes real economic damage โ more intense storms, lower crop yields, higher healthcare costs, reduced worker productivity, and rising sea levels that threaten coastal property. Climate impact translates these consequences into a dollar figure so that the true cost of emissions becomes concrete rather than abstract.
The Social Cost of Carbon
The Social Cost of Carbon, often abbreviated SCC, is an estimate of the total economic damage caused by releasing one additional tonne of CO2. It attempts to add up all the harms โ across all countries, over the full lifetime of that carbon in the atmosphere โ and express them as a single number. Think of it as the price tag on pollution that nobody currently has to pay at the point of emission.
Who Calculates It
The U.S. Environmental Protection Agency maintains an official estimate used in federal rulemaking. Academic research teams run sophisticated models that simulate how emissions affect global temperatures, economies, agriculture, health, and ecosystems over decades and centuries. These models โ called Integrated Assessment Models โ combine climate science with economics to project future damages.
Current Estimates
Estimates of the SCC vary widely depending on assumptions, but most credible calculations fall between 50 and 200 dollars per tonne of CO2. The EPA’s current central estimate is around 190 dollars per tonne.
Why It Matters
For policymakers, the SCC helps decide whether a regulation is worth its cost. For businesses, it provides a framework for understanding the true climate liability embedded in operations, supply chains, and procurement. For individuals, it puts a meaningful number on the hidden damage behind everyday purchases and activities โ making the invisible consequences of carbon pollution visible to everyone.