The mental math references for energy are below. At the bottom of the page you’ll find a list of sources for each figure, with the precise data point from that source.
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Energy consumption by region
Global energy consumption
China energy consumption
U.S. energy consumption
EU energy consumption
India energy consumption
600 quadrillion BTU
150 quadrillion BTU
100 quadrillion BTU
80 quadrillion BTU
40 quadrillion BTU
Global energy sources
Oil
Coal
Natural gas
Solar
Wind
Nuclear energy
Hydro
Biofuels
30%
25%
20%
13%
10%
5%
3%
2%
*Do not add to 100% due to rounding and different reporting methodologies
Global energy demand
Global Daily Oil Demand
Global Gas (converted to Oil) Daily Demand
100 Million Barrels
70 Million Barrels
Energy consumption by sector
Industrial sector energy use
Transport sector energy use
Residential sector energy use
Commercial sector energy use
35%
30%
20%
20%
Transportation energy consumption
Electric car range
Gasoline car mileage
Aviation fuel consumption
Diesel train fuel efficiency
Ocean liner fuel efficiency
200 miles
25 miles per gallon
100 billion gallons per year
500 ton-miles per gallon
0.005 mpg
Per capita energy usage
Per capita energy use in U.S.
Per capita energy use in EU
Per capita energy use in India
80 mWh/year
35 mWh/year
10 mWh/year
Per capita electric and gas usage in the U.S.
Per capita electricity use
Per capita gasoline consumption
10 mWh/year
500 gallons/year
Energy prices
Electricity price in U.S.
Coal price in U.S.
Natural gas price in U.S.
Oil price in U.S.
15 cents/kWh
$150/ton
$3/mcf
$90/barrel
Energy efficiency
Solar panel efficiency
Wind turbine efficiency
Nuclear plant efficiency
Coal plant efficiency
Natural gas plant efficiency
20%
50%
35%
30%
45%
Carbon emissions
Global carbon emissions
U.S. carbon emissions
EU carbon emissions
China carbon emissions
40 gigatons/year
5 gigatons/year
3 gigatons/year
10 gigatons/year
Sources:
Energy consumption by region
Global energy consumption: 603.32 quadrillion BTU — Knoema
China energy consumption: 165.16 quadrillion BTU — Knoema
U.S. energy consumption: 99.19 quadrillion BTU — Statista
EU energy consumption: 77.6 quadrillion BTU — Statista
India energy consumption: 31.96 quadrillion BTU — Knoema
Global energy sources
Oil as global energy source: 30.9% — IEA
Coal as global energy source: 26.8% — IEA
Natural gas as global energy source: 23.2% — IEA
Solar as global energy source: 12.8% — IEA
Wind as global energy source: 10.1% — IEA
Nuclear energy as global source: 5% — IEA
Hydro as global energy source: 2.5% — IEA
Biofuels as global energy source: 2% — IEA
Global energy demand
Global Daily Oil Demand: 99.57 million barrels per day — Statista
Global Gas (converted to Oil) Daily Demand: 3 970 Bcm — IEA
Energy consumption by sector
Industrial sector energy use: 37% — IEA
Transport sector energy use: 27% — EIA
Residential sector energy use: 22% — University of Michigan
Commercial sector energy use: 18% — EIA
Transportation energy consumption
Electric car range: 219 miles — Gridserve
Gasoline car mileage: 25.4 miles per gallon— Motor1
Aviation fuel consumption: 95 billion gallons per year— Statista
Diesel train fuel efficiency: 520 ton-miles per gallon— CSX
Ocean liner fuel efficiency: 0.004 mpg— Juneau Carbon Offset
Per capita energy usage
Per capita energy use in U.S.: 78,754 kWh/year — Our World in Data
Per capita energy use in EU: 36,129 kWh/year — Our World in DataPer capita energy use in India: 7,143 kWh/year — Our World in Data
Per capita electric and gas usage in the U.S.
Per capita electricity use in U.S.: 12,202 kWh/year — EIA
Per capita gasoline consumption in U.S.: 562 gallons/year — News Nation Now
Energy prices
Electricity price in U.S.: 15 cents/kWh — EIA
Coal price: $150/ton — Trading Economics
Natural gas price: $3/mcf — Trading Economics
Oil price: $90/barrel — Trading Economics
Energy efficiency
Solar panel efficiency: 22% — Clean Energy Reviews
Wind turbine efficiency: 50%— University of Michigan
Nuclear plant efficiency: 35%— Energy Education
Coal plant efficiency: 30%— PCI
Natural gas plant efficiency: 45% — PCI
Carbon emissions
Global carbon emissions: 36.8 gigatons/year — IEA
U.S. carbon emissions: 4.97 gigatons/year— Statista
EU carbon emissions: 2.73 gigatons/year— Statista
China carbon emissions: 12.1 gigatons/year— IEA
