AQA GCSE Geography (8035) — Challenges in the human environment
Every time you turn on a light switch or boil a kettle, you are plugging into a massive national network powered by a constantly shifting blend of fuels. The energy mix refers to the exact proportions of different energy sources a country uses to meet its needs.
In AQA Geography, you must understand the difference between the total energy mix (which includes heating, transport, and industry) and the electricity generation mix (just the power stations). While the UK is making huge strides in green electricity, it remains heavily reliant on fossil fuels for its overall energy.
The UK's total energy mix is still dominated by fossil fuels, which account for approximately 80% of total consumption. As of 2024/25, the total breakdown consists of oil (39.7%), gas (36.2%), and renewable energy alongside other sources (~24%).
However, the electricity generation mix tells a very different story of rapid decarbonisation. For electricity generation in 2025, the breakdown is:
The UK was built on coal, but its use has completely collapsed. The country's last coal-fired power station, Ratcliffe-on-Soar in Nottinghamshire, closed in October 2024, ending 142 years of coal power.
Surprisingly, total energy consumption in the UK has actually fallen by 13–18% since 1970, despite a growing population. This is partly due to a 12% fall in domestic use from better insulation and LED lighting. Most significantly, industrial energy use has plummeted by 60% due to de-industrialisation, as heavy manufacturing like steelmaking has declined.
To truly analyse the changing energy mix, you must explain the economic, environmental, and political reasons driving the shift from coal to gas and renewables.
As domestic fossil fuel production declines by about 6% per year, the UK is no longer self-sufficient. This creates a shortfall that can be calculated as:
To bridge this gap, the UK imports roughly 37% of its total energy, including 50% of its gas from places like Norway (via pipeline) and Qatar/USA (as liquid natural gas). Relying heavily on imports reduces the UK's energy security, leaving the country vulnerable to global price spikes and supply interruptions.
Developing different energy sources brings both positive and negative impacts across the UK.
Students often confuse the 'energy mix' with the 'electricity mix'—remember that the total energy mix is still roughly 80% fossil fuels because of petrol in cars and gas in home boilers.
For 'Analyse' questions, do not just describe the changes in percentages; you must explain WHY they happened using economic, environmental, and political drivers.
Using highly specific, up-to-date facts (like the closure of Ratcliffe-on-Soar coal plant in 2024 or the Mariner Oilfield) will instantly elevate your answer into the highest mark band.
When discussing the environmental benefits of gas over coal, explicitly state that gas emits 45-50% less , which contributes less to the enhanced greenhouse effect.
Energy mix
The range and proportions of different energy sources used by a country to meet its total energy needs.
Total energy mix
The complete proportion of energy sources used across a whole country, including for heating, transport, and electricity generation.
Electricity generation mix
The specific proportion of energy sources used solely to produce electricity in power stations.
Fossil fuels
Natural, finite fuels formed from the remains of living organisms, such as coal, oil, and natural gas.
Renewable energy
Energy from a source that is not depleted when used, such as wind or solar power.
Decarbonisation
The process of reducing the amount of carbon dioxide emissions produced by a country's economy.
De-industrialisation
The decline in the importance of manufacturing and heavy industry within a country's economy.
Finite resource
A resource that is limited in supply and will eventually run out, such as coal or oil.
Energy security
The uninterrupted availability of energy sources at an affordable price.
Multiplier effect
When an initial investment (like building a power station) creates additional jobs and income in the local economy through secondary spending.
Decommissioning
The process of safely closing, dismantling, and cleaning up a power plant (especially nuclear) at the end of its operational life.
Intermittency
The unreliable nature of some renewable energy sources, meaning they do not constantly generate power (e.g., when the wind doesn't blow).
NIMBYism
Standing for 'Not In My Back Yard', it describes local opposition to new infrastructure developments, such as wind farms, due to visual or noise impacts.
Fracking
A suspended extraction technique involving injecting high-pressure liquid into shale rock to force open fissures and extract natural gas.
Put your knowledge into practice — try past paper questions for Geography
Energy mix
The range and proportions of different energy sources used by a country to meet its total energy needs.
Total energy mix
The complete proportion of energy sources used across a whole country, including for heating, transport, and electricity generation.
Electricity generation mix
The specific proportion of energy sources used solely to produce electricity in power stations.
Fossil fuels
Natural, finite fuels formed from the remains of living organisms, such as coal, oil, and natural gas.
Renewable energy
Energy from a source that is not depleted when used, such as wind or solar power.
Decarbonisation
The process of reducing the amount of carbon dioxide emissions produced by a country's economy.
De-industrialisation
The decline in the importance of manufacturing and heavy industry within a country's economy.
Finite resource
A resource that is limited in supply and will eventually run out, such as coal or oil.
Energy security
The uninterrupted availability of energy sources at an affordable price.
Multiplier effect
When an initial investment (like building a power station) creates additional jobs and income in the local economy through secondary spending.
Decommissioning
The process of safely closing, dismantling, and cleaning up a power plant (especially nuclear) at the end of its operational life.
Intermittency
The unreliable nature of some renewable energy sources, meaning they do not constantly generate power (e.g., when the wind doesn't blow).
NIMBYism
Standing for 'Not In My Back Yard', it describes local opposition to new infrastructure developments, such as wind farms, due to visual or noise impacts.
Fracking
A suspended extraction technique involving injecting high-pressure liquid into shale rock to force open fissures and extract natural gas.
