The classification and distribution of energy resources — Eduqas A-Level Geography

Energy resources are materials that can be used to generate power, heat, or fuel. They are classified into non-renewable (fossil fuels like coal, oil, and natural gas, plus nuclear) and renewable (solar, wind, hydroelectric, tidal, geothermal, biomass). This topic is central to understanding how human societies function, as energy is essential for transport, industry, heating, and electricity. The distribution of these resources is uneven globally, leading to geopolitical tensions, economic disparities, and environmental challenges. For WJEC A-Level Geography, this topic links to themes of resource security, sustainable development, and the impacts of energy use on the physical and human environment.

The classification of energy resources is based on their rate of formation relative to consumption. Non-renewables are finite and take millions of years to form, so they are being depleted faster than they are created. Renewables are theoretically inexhaustible on a human timescale, though their availability varies by location (e.g., solar is abundant in deserts, wind in coastal areas). The distribution of energy resources is controlled by geological processes (e.g., fossil fuels in sedimentary basins, uranium in igneous rocks) and climatic factors (e.g., rainfall for hydroelectricity). This uneven distribution creates patterns of energy dependency, where some countries are energy-rich (e.g., Saudi Arabia for oil) and others are energy-poor (e.g., Japan, which imports most of its energy).

Understanding this topic is crucial for analysing contemporary issues like climate change, energy security, and the transition to low-carbon economies. It also connects to broader geographical concepts such as globalisation, inequality, and sustainability. Students should be able to evaluate the advantages and disadvantages of different energy sources, explain why certain regions have specific energy mixes, and discuss the environmental and social consequences of energy extraction and use. This knowledge forms a foundation for later topics on energy management and the geopolitics of resources.

• →Non-renewable vs renewable energy: Non-renewables (coal, oil, gas, nuclear) are finite and produce greenhouse gases (except nuclear, which produces radioactive waste). Renewables (solar, wind, hydro, tidal, geothermal, biomass) are replenished naturally but have intermittency and location constraints.
• →Energy security: The ability of a country to meet its energy needs reliably and affordably. It depends on domestic reserves, imports, infrastructure, and geopolitical stability. Energy-poor countries face risks of price volatility and supply disruptions.
• →Uneven distribution: Fossil fuels are concentrated in specific regions (e.g., Middle East oil, Russian gas, US coal). Renewables are also unevenly distributed (e.g., solar in Sahara, wind in North Sea). This leads to trade dependencies and conflicts.
• →Energy mix: The combination of different energy sources used by a country. It reflects resource availability, government policy, economic factors, and environmental priorities. For example, France relies heavily on nuclear, while Iceland uses geothermal and hydro.
• →Environmental impacts: Extraction (e.g., oil spills, mining deforestation), transport (e.g., pipeline leaks), and combustion (e.g., CO2 emissions, air pollution) of energy resources. Renewables also have impacts (e.g., bird collisions with wind turbines, habitat loss from hydro dams).

• Classification of energy resources
• Global distribution of fossil fuel stocks and reserves
• Alternatives to conventional fossil fuel sources
• Physical factors determining energy supply (geological, climatic, relief, and favourable conditions for sustainable generation)
• Factors influencing changing global energy demand (economic, demographic, social, and technological)
• Global management of oil and gas (imbalance management, role of MNCs and national governments, role of OPEC)
• Problems associated with energy (environmental, political, technological, and economic)
• Energy mixes and development (appropriate technology in developing countries, national energy mix factors, global economic/political factors)
• Sustainable solutions (demand reduction, energy efficiency, clean technologies for fossil fuels, sustainability of alternative sources)

• 💡Ensure case studies and examples are contemporary (within the last two decades).
• 💡Demonstrate understanding of specialised concepts such as adaptation, causality, inequality, interdependence, globalisation, mitigation, risk, and sustainability.
• 💡Apply geographical skills (quantitative and qualitative) to the theme as appropriate.
• 💡Focus on people-environment interactions and the linkages between physical and human geography.
• 💡Use specific examples: When discussing distribution, always name countries or regions (e.g., 'Saudi Arabia holds about 17% of global oil reserves') and use data from the BP Statistical Review or similar sources. This shows depth of knowledge.
• 💡Link to wider themes: Connect energy distribution to concepts like global inequality, climate change, or sustainable development. For instance, explain how fossil fuel dependence contributes to carbon emissions and why developing countries may struggle to transition to renewables.
• 💡Evaluate rather than describe: Higher marks come from critical analysis. For example, instead of listing pros and cons of wind power, discuss its intermittency and the need for storage, or compare its costs with fossil fuels over time.

• Misconception: Nuclear energy is renewable. Correction: Nuclear uses uranium, which is finite, so it is non-renewable. However, it is low-carbon and often grouped with renewables in discussions of clean energy.
• Misconception: Renewable energy is always clean and has no environmental impact. Correction: Renewables have environmental costs, such as land use for solar farms, noise and visual impact of wind turbines, and ecosystem disruption from hydroelectric dams.
• Misconception: The UK has abundant energy resources. Correction: The UK has significant oil and gas reserves in the North Sea, but these are declining. It also has good wind and tidal potential, but still imports about 40% of its energy, making it energy-insecure.