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Energy Challenges and Dilemmas

Demand reduction and energy efficiency policies

  • 2 things to know
  • Component 3 Section B

Overview

National policy that reduces energy demand in buildings, role of smart meters and smart grids and combined heat and power.

What you need to know

Answer each one before you reveal it.

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Key term

Why is reducing demand described as the cheapest energy policy?

Numbers

Give two global agreements shaping energy policy.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Why is reducing demand described as the cheapest energy policy?

    Model answer

    Energy that is never used needs no generation, no network and no fuel. Efficiency measures usually cost less per unit saved than new supply costs to build.

  2. 2

    Give two global agreements shaping energy policy.

    Model answer

    The Paris Agreement of 2015 commits countries to hold warming well below 2 °C. The 2023 climate conference in Dubai called for a transition away from fossil fuels in energy systems.

  3. 3

    What did the 2023 climate conference agree about renewables and efficiency?

    Model answer

    Governments agreed to aim at tripling renewable capacity by 2030. The same text called for doubling the annual rate of energy efficiency improvement.

  4. 4

    Describe a national policy that reduces energy demand in buildings.

    Model answer

    National regulations set minimum insulation and glazing standards for new homes. Retrofit grants pay for loft and cavity wall insulation in the existing stock.

  5. 5

    How do appliance labelling schemes reduce demand?

    Model answer

    Labels let buyers compare running costs before they purchase. Manufacturers respond by improving the products that would otherwise score badly.

  6. 6

    Give two local-scale measures that cut energy use.

    Model answer

    Local authorities can convert street lighting to LEDs and dim it outside peak hours. District heating networks use waste heat from industry to warm nearby homes.

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