What you’ll learn6 learning objectivesChoose one objective for a focused lesson, or study the complete topic.7.2.1Energy source types• Renewable: wind, solar, tidal, wood, geothermal, hydropower• Non-renewable: nuclear, fossil fuelsSyllabus objective7.2.2Global energy consumption rising• Population increase, per capita demand• Fossil fuels dominate, renewables increasingSyllabus objective7.2.3Energy source sustainability• Varies significantly• Both types have environmental costsSyllabus objective7.2.4Country energy choices• Factors: sustainability, cost, pollution, efficiency, availability, securitySyllabus objective7.2.5Intermittent energy production• Some renewables require energy storage• Solutions: batteries, pumped hydroelectricity, fuel cells, thermal storageSyllabus objective7.2.6Energy conservation and efficiency• Reduce dependence on imports• Behavioural changes, efficient technologiesSyllabus objective