Strategies for the Management of Energy Resources (Cambridge International IGCSE Environmental Management)

What strategies are used to manage energy resources?

Reducing consumption

• Using less electricity and fuel helps conserve energy resources

  • Turning off lights and appliances when not in use

• Choosing to walk, cycle or use public transport reduces fuel demand

• Reducing consumption lowers energy bills and greenhouse gas emissions

Insulation

• Insulating materials can be added to buildings to reduce heat loss or heat gain
• Insulating walls, roofs and floors keeps warm air inside in winter
• Good insulation keeps hot air out in summer, reducing cooling needs
• Homes need less heating and air conditioning, lowering energy use

Cavity wall insulation

• The gaps or cavities between external walls are often filled with insulation

  • This is called cavity wall insulation
  • This is often done by drilling a hole through the external wall to reach the cavity and filling it with a special type of foam which is made from blown mineral fibre filled with gas
  • This lowers the transfer of heat through the walls from the inside to the outside

Less energy is transferred if the cavity is insulated

Double and triple glazing

• Windows are an area of significant heat loss in houses

• Double or triple glazing in windows is an efficient way to reduce heat loss

  • Double-glazed windows consist of two panes of glass with air trapped between them
  • Triple-glazed windows have three panes
  • The trapped air acts as an insulator, preventing heat loss

Double glazing reduces heat loss through the glass

Energy-efficient devices, including vehicles and electrically propelled vehicles

• Energy-efficient devices include appliances designed to use less electricity. For example:

  • LED lights use far less electricity than traditional bulbs
  • Energy-efficient fridges and washing machines use less power

• Vehicles have become much more fuel-efficient, using less petrol or diesel per kilometre

• Electrically propelled vehicles (electric cars, scooters, buses) use electricity instead of fossil fuels

  • Produce no exhaust emissions during use
  • Help reduce overall fuel consumption

Exploiting existing energy resources

• Using local energy resources reduces dependence on imports

  • Countries may expand solar, wind or hydropower where conditions are suitable

• Improving existing power stations to increase their efficiency

• Upgrading electricity grids reduces energy lost during transmission

Education on energy conservation

• Teaching people why saving energy matters encourages long-term behaviour change
• Schools and governments can promote switching off unused appliances
• Public campaigns explain how efficient devices and transport choices reduce energy demand

Transport policies

• Governments can introduce policies to reduce fuel use

  • Improving public transport encourages people to drive less
  • Creating cycle lanes and pedestrian zones reduces car use
  • Congestion charges can discourage driving in busy city centres

• Encouraging electric vehicles through subsidies or increasing availability of charging stations reduces fossil fuel demand

Battery storage

• Battery storage systems store electricity for later use
• Helps balance supply and demand, especially for intermittent renewables like wind and solar
• Stored energy can be used during power cuts or peak demand, reducing pressure on the grid
• Large battery systems support the shift towards cleaner energy sources

Development of new energy resources

• Research into next-generation renewables, such as improved solar panels or advanced wind turbines
• Developing hydrogen fuel as an alternative to fossil fuels
• Exploring geothermal and tidal energy in new locations
• Innovation helps reduce dependence on finite resources and increases energy security

Exam Hint When describing strategies, always link them to how they reduce energy use. For example, insulation works because it “reduces heat loss”, not just because it “saves energy”. Instead of saying “public transport saves energy”, say why, such as “more people sharing one vehicle reduces fuel use per person”. Examiners reward clear explanations.

Many students forget to mention a behavioural change in energy management. Adding a point about education or awareness shows you understand that energy conservation isn’t only about new technologies.