Portal:Energy/Categories

National energy supply, use & conservation
 * Energy by country

National electricity sector
 * Electric power by country

Politics, economics, environment
 * Climate change
 * Energy conservation
 * Energy economics
 * Energy crises
 * Energy development
 * Energy policy
 * Peak oil

Energy sources
 * Fuels
 * Biofuels
 * Fossil fuels
 * Fusion power
 * Nuclear technology
 * Renewable energy
 * Energy conversion
 * Electric power
 * Energy storage

Energy-related design
 * Electric vehicles
 * Hybrid vehicles
 * Low-energy building
 * Solar design

Scientific usage
 * Heat transfer
 * Thermodynamics
 * Units of energy