3.3.2. Non-renewable Sources

Non-renewable energy resources are coal, oil or petroleum, natural gas, and nuclear energy, and are those resources that cannot be replenished easily in consideration of the rate of consumption of the same.

Non-renewable energy sources are types of energy that are finite and cannot be replaced in a short period. Unlike renewable sources such as solar and wind, these resources take millions of years to form. The four primary types are coal, oil, natural gas, and nuclear energy. As they are consumed for power, they do not regenerate quickly enough to meet current usage rates, which classifies them as non-renewable.

Think of non-renewable resources like a savings account that only has a limited amount of money. Once you spend that money, you can't simply put more back in unless you put in a lot of time and effort—similar to how it takes millions of years for coal, oil, and natural gas to form.

Fossil fuels are the largest contributors towards global greenhouse gas and CO2 emissions, and accounts for over 80% of the world’s global energy production.

Fossil fuels, which include coal, oil, and natural gas, are the primary energy sources worldwide. They account for more than 80% of the total energy production. While they provide a considerable amount of energy, the combustion of these fuels releases large amounts of greenhouse gases, particularly CO2, contributing significantly to climate change and global warming.

Imagine driving a car that runs only on gasoline. Every mile you drive releases exhaust into the atmosphere, contributing to air pollution. Similarly, every time we use fossil fuels for energy, we are adding greenhouse gases to the Earth’s atmosphere, which traps heat and leads to climate change.

These fossil fuels were formed over millions of years due to the immense heat and pressure within the earth’s crust that converted plant and animal matter into coal, oil, and natural gas.

Fossil fuels are created from the remains of ancient plants and animals that were buried under layers of sediment. Over millions of years, the heat and pressure from the earth transformed this organic matter into hydrocarbons, the chemical basis for coal, oil, and natural gas. This process takes a very long time, which is why these sources are considered limited and non-renewable.

Imagine leaving a sandwich in your backpack for years without eating it. Over time, the bread hardens and the filling decomposes, eventually transforming into something completely different. Likewise, the organic material from plants and animals undergoes a transformation into fossil fuels after being subjected to heat and pressure over millions of years.

The radioactive elements required to generate nuclear energy, usually uranium, comes from mined ore.

Nuclear energy is produced through a process called fission, where the nucleus of uranium atoms is split to release energy. Uranium is a naturally occurring radioactive element that must be mined from the earth. Although it produces large amounts of energy and has low greenhouse gas emissions compared to fossil fuels, uranium is also a limited resource.

Consider uranium like a special type of fruit tree that can only produce fruit for a limited period. Once the fruit is used up, you have to either wait for another season or find another tree. Similarly, once uranium is used up in reactors, it cannot be replaced quickly.

Over 80% of India’s requirement is met by coal, oil and biomass, and in spite of having low per capita energy consumption, India is the 3rd largest global emitter of CO2.

In India, more than 80% of energy needs are fulfilled by coal, oil, and biomass sources. Despite having lower per person energy consumption compared to some other countries, India ranks as the third-largest emitter of CO2 globally. This is primarily because of its reliance on fossil fuels for energy production, which generates significant amounts of greenhouse gases.

Think of India like a home that uses old-style heating methods, such as a wood-burning stove. While it may not be heating as many rooms as a larger house would, the smoke and emissions from burning wood still pollute the air significantly, similar to India’s energy situation where less energy consumption still leads to high emissions due to fuel sources.

While the largest domestic source of energy is coal, about 70%, the cumulative domestic fossil fuel production is the lowest among the emerging economies.

Coal serves as the primary energy source in India, providing around 70% of the nation's energy. However, despite this heavy reliance, India's total production of fossil fuels is lower than that of many other emerging economies. This suggests a heavy dependency on coal and imported oil to meet energy needs.

Imagine living in a house where the heating system is outdated and only uses coal; while it’s good at heating the place, if the coal supply runs low, it’s hard to find enough to keep warm. Similarly, India depends heavily on coal, but does not produce enough fossil fuels to be self-sufficient.

India relies on crude oil imports as it has only 0.6% and 0.4% of the world’s gas and oil reserves respectively.

India’s own reserves of oil and natural gas are quite limited, accounting for only a small fraction of global reserves. This makes the country heavily reliant on importing crude oil to meet its energy needs. Interestingly, India exports a significant amount of refined petroleum products, benefiting economically despite its limited raw resources.

Imagine going grocery shopping where you don’t grow your own vegetables, but instead, you sell the ones you’ve learned to turn into gourmet dishes. Likewise, India imports the raw crude oil but has developed the capacity to refine and sell petroleum products to other countries.

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