Sector Concentration Reveals Highest-Leverage Climate Action
Sector shares clarify where mitigation has the largest immediate effect. A 1,000-unit frame makes concentration visible and helps prioritize action portfolios instead of one-off measures.
Visual Story
Global Emissions By Sector Out Of 1,000
Breaking emissions into 1,000 units helps compare priorities across sectors.
Global Greenhouse Gas Emissions Out Of 1,000
Sector contributions to greenhouse gas emissions, expressed in a 1,000-unit frame.
Decarbonization Depends on Cross-Sector Coordination
The trajectory depends on policy coordination across power, industry, transport, land, and buildings. Progress in one sector can be offset elsewhere if electrification, fuel switching, and efficiency are not synchronized.
Energy systems: 350 per 1,000
Raw count: about 20.6 GtCO2e/year. Permille: 350 per 1,000. Category membership: Includes electricity and heat generation plus related energy-system emissions in broad sector aggregation. Significance: Decarbonizing this category creates spillover benefits for transport, buildings, and parts of industry through cleaner electricity.
Industry: 240 per 1,000
Raw count: about 14.2 GtCO2e/year. Permille: 240 per 1,000. Category membership: Includes process and energy-related emissions from industrial production in the grouped source structure. Significance: Hard-to-abate industrial processes require long-lead investment, so delays here lock in future emissions.
Agriculture and land use: 180 per 1,000
Raw count: about 10.6 GtCO2e/year. Permille: 180 per 1,000. Category membership: Includes agricultural non-CO2 emissions and land-use change components as grouped in the source framework. Significance: This category ties climate outcomes to food systems and land management, where trade-offs must be handled explicitly.
Transport: 150 per 1,000
Raw count: about 8.8 GtCO2e/year. Permille: 150 per 1,000. Category membership: Includes road, aviation, shipping, and related transport-energy emissions in sector rollups. Significance: Transport is highly policy-sensitive via standards, mode shift, logistics efficiency, and electrification pace.
Buildings and other: 80 per 1,000
Raw count: about 4.7 GtCO2e/year. Permille: 80 per 1,000. Category membership: Includes direct building emissions plus smaller residual categories grouped for visual clarity. Significance: Even smaller shares are decision-relevant because efficiency retrofits can deliver fast and durable reductions.
Sources
- Our World in Data - Emissions by sector (CC BY 4.0) - Broad sector shares converted into 1,000 units and rounded.
- IPCC AR6 WGIII (IPCC report terms) - Used to cross-check sector definitions and mitigation context.