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Analyze the efficiency and environmental impact of the global energy transition.
Explore 25 years of energy data across 200+ countries. Compare grid compositions, visualize CO₂ trends, and simulate your own energy scenarios.
TerraWatt is an interactive energy dashboard that tracks how nations generate electricity and the carbon footprint of their grids. Using data from 2000 to 2024, it lets you explore how the global energy mix has evolved — from coal-dominated grids to the rise of wind, solar, and nuclear power.
Visualize renewable energy adoption across the entire world with our interactive choropleth map.
Track the energy transition from 2000 to 2024 with detailed breakdowns by source.
Adjust a country's energy mix and instantly see the impact on CO₂ emissions.
Understanding the metrics behind the global energy transition.
The composition of a country's electricity generation broken down by source: coal, gas, oil, nuclear, hydro, wind, solar, and other renewables. Expressed as percentages of total generation.
The amount of CO₂ emitted per unit of electricity generated, measured in grams of CO₂ per kilowatt-hour (g/kWh). Lower values indicate cleaner grids.
Energy generated from naturally replenishing sources: hydro, wind, solar, geothermal, and biomass. These sources produce little to no direct CO₂ emissions during generation.
A what-if scenario tool that lets you adjust a country's energy mix and calculates the resulting change in CO₂ emissions based on each source's emissions factor.
The total amount of electricity a country produces in a year, measured in terawatt-hours. One TWh can power roughly 150,000 European homes for a year.
The lifecycle CO₂ emissions per kWh for each energy source. Coal emits ~820 g/kWh while wind emits only ~11 g/kWh — a 75x difference.
200+
Countries Tracked
25
Years of Data (2000\u20132024)
6
Deep-Dive Profiles
8
Energy Sources Analyzed
Six nations that represent fundamentally different approaches to the energy transition. Each one is an archetype — from nuclear-heavy France to fully renewable Iceland — offering unique lessons about how the world can decarbonize its grid.
The Nuclear Baseline
Low-carbon baseline powered by ~70% nuclear energy
2024 Snapshot
~70% Nuclear · ~55 g CO₂/kWh
The Energiewende Experiment
Phasing out nuclear while scaling wind and solar to 50%
2024 Snapshot
~45% Renewables · ~380 g CO₂/kWh
The Industrial Giant
World's largest coal consumer and biggest clean energy investor
2024 Snapshot
~55% Coal · ~560 g CO₂/kWh
The Mixed Economy
Diverse grid with gas dominance and rapid renewable growth
2024 Snapshot
~40% Gas · ~390 g CO₂/kWh
The Rising Bridge
Emerging economy bridging fossil fuels and renewables
2024 Snapshot
~45% Renewables · ~370 g CO₂/kWh
The Geothermal Ideal
Nearly 100% renewable electricity from hydro and geothermal
2024 Snapshot
~100% Renewable · ~15 g CO₂/kWh
Visualize how renewable energy adoption has spread across the globe from 2000 to 2024.
Explore →Design your own energy mix and see how it affects a country's carbon footprint.
Explore →Deep-dive into the energy story of each nation with charts, data, and key insights.
Explore →