Non-renewable Sources of Energy
Energy sources like coal, petroleum, and natural gas that exist in limited quantities and are consumed faster than they are formed.
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Fossil fuels and reserves
Coal, petroleum, and natural gas are formed from ancient biomass over millions of years. They are non-renewable on human timescales because we consume them far faster than they are formed. Burning them releases energy but also carbon dioxide and other pollutants.
✔ Key takeaway: Coal, oil, and natural gas provide high energy density but are limited and polluting.
Environmental impact
Combustion of fossil fuels produces CO₂ (a greenhouse gas) and other emissions that contribute to air pollution and climate change. Efficient use and transition to cleaner sources reduce their environmental impact.
✔ Key takeaway: Non-renewable sources have significant environmental costs; efficiency and alternatives are important.
Link to simulator: Use the non-renewable sources simulator to relate fuel input, power output, and CO₂ emissions.
💭 Think about this:
Why is it important to improve efficiency in fossil-fuel-based power plants even before completely switching to renewables?