How much are people across the world paying for their carbon emissions?
Global carbon pricing coverage has expanded significantly, rising from 7% of total carbon dioxide emissions in 2010 to 30% last year, according to researchers Hannah Ritchie and Pablo Rosado. Despite this growth, 71% of global emissions currently remain untaxed, and current price levels in most markets fall well below the median estimated social cost of carbon, which typically exceeds $100 per tonne.
Did You Know? A very small share of global emissions—less than 0.5%—is currently taxed at more than $100 per tonne, with this rate applied in countries including Uruguay, Sweden, Norway, Finland, Switzerland, and Hungary.
How current carbon prices affect consumer costs
Carbon pricing generally has a limited impact on consumer energy costs at current rates. Data indicates that at a price of $5 per tonne, the cost of filling a vehicle with petrol increases by less than 1%. Even at $10 per tonne, the increase remains at approximately 2%, a shift that is largely negligible compared to the 10% to 15% monthly price fluctuations typically seen in oil markets.
A more significant impact on consumer prices only emerges when carbon taxes reach the $100 per tonne threshold. At this level, petrol prices would increase by roughly 15%, a figure comparable to regular market swings. However, as Ritchie and Rosado note, almost no carbon market currently operates at this price point.
Why the gap between pricing and climate damage matters
The fundamental economic argument for carbon pricing is to ensure that the market price of fossil fuels reflects the true cost of the environmental damage they cause. Greenhouse gas emissions generate costs that are not typically borne by the entities responsible for the emissions. By placing a price on carbon, policymakers aim to internalize these costs, thereby incentivizing innovation and making cleaner energy alternatives more attractive.
Expert Insight: The disconnect between current carbon prices and the estimated social cost of carbon suggests that most existing schemes are not yet calibrated to fully capture the economic impact of climate change. While there is no global consensus on a single “fair” price, the disparity between current low-cost markets and the $100-per-tonne damage estimates indicates that existing policies may not be sufficient to drive large-scale behavioral or structural shifts in energy consumption.
What happens next in carbon markets
Future developments in carbon pricing could depend on whether governments move to align their taxation levels with academic estimates of the social cost of carbon. If markets shift toward the $100 per tonne mark, consumers may experience more frequent and noticeable changes in fuel and goods prices. Conversely, if the current trend of low-cost or non-existent pricing continues for the remaining 71% of global emissions, the gap between market prices and the actual cost of environmental damage is likely to persist.
Frequently Asked Questions
What percentage of global emissions are currently covered by a carbon price?
According to research by Hannah Ritchie and Pablo Rosado, 30% of global CO2 emissions are covered by a carbon price, while 71% remain entirely untaxed.
How does a $100 per tonne carbon tax affect petrol prices?
At $100 per tonne, petrol prices are estimated to increase by approximately 15%, which is broadly in line with standard fluctuations seen in oil markets.
What is the “social cost of carbon”?
It is an estimate of the financial damage caused by emitting one tonne of CO2. While estimates vary, the median values in academic research tend to exceed $100 per tonne.
Do you believe that carbon pricing should be set at a level that fully reflects environmental damage, even if it leads to higher consumer costs?