- Definition and Types of Energy
- Myths And Misconceptions About Energy
- The Relationship Between Energy and Environment
- Climate Change and Carbon Footprint
- Greenhouse Gas Effect
- The Role of Human-Induced Greenhouse Gases and Energy Consumption
- Energy Efficiency and Sustainability
- Renewable Energy Sources and Future Perspectives
- Play and Learn
- Solar Energy Conversions
- Solar Energy Worldwide
- Solar Energy in Partner Countries
- Positive and Negative Impacts
- Technologies for Harnessing Solar Energy
- Solar thermal energy technologies and applications
- Electricity Generation Methods
- Passive Heating and Cooling of Residences with the Sun
- Concentrator solar power (CSP) systems and electricity generation
- Systems and applications that generate electricity directly from solar rays
- Photovoltaic cells and panels
- Domestic PV Systems
- Off-Grid PV Systems
- Hybrid Connected Systems
- Materials Used in PV Cells
- Play and Learn
Fossil Energy Sources
Fossil fuels are the most commonly used non-renewable energy sources in the world. They are formed from the remains of plants and animals that lived millions of years ago and were buried under layers of soil and rock. Over time, heat and pressure transformed these remains into coal, oil, and natural gas Ref .Fossil fuels are used to power vehicles, generate electricity, and run factories.
Coal: Coal is a solid black or brownish material made up mostly of carbon. It is the oldest fossil fuel and has been used for centuries to produce heat and energy. Coal is still widely used today, especially in power plants to generate electricity. However, burning coal releases harmful gases into the atmosphere, contributing to air pollution and climate change Ref .


Oil (Petroleum): Oil is a liquid fossil fuel found in underground reservoirs. It is used to make products like gasoline, diesel, and jet fuel, which power vehicles and planes. Oil is also used to create products like plastic, asphalt, and chemicals. While oil is very useful, its extraction and transportation can cause environmental problems like oil spills, which harm wildlife and ecosystems Ref .
Natural Gas: Natural gas is a clean-burning fossil fuel mainly made of methane. It is used for cooking, heating homes, and generating electricity. It burns cleaner than coal and oil, producing less pollution. However, natural gas can leak during transportation, and since methane is a powerful greenhouse gas, even small leaks can significantly impact the environment Ref .