Fossil Fuels Still Power 60% of Global Electricity: Here's Why

Clean energy is in the news every day. Solar panels are being installed at record speed. Wind energy is growing. Governments are making big promises about cutting pollution. It feels like the world is already moving away from coal and gas.

But is it really?

In 2025, fossil fuels still produce close to 60% of all the electricity in the world. Coal alone makes up about 33%. Natural gas adds another 22%. Oil covers a small part of the rest.

But here is what makes this even harder to fix. The world is not just trying to clean up its existing electricity. It is trying to power a much bigger system. Global electricity generation grew from about 25,400 TWh in 2017 to roughly 31,800 TWh in 2025. That is over 25% more demand in just eight years. And meeting that growing demand while also replacing fossil fuels is a much harder problem than most people realise.

What Does the Global Electricity Mix Actually Look Like?

Think of all the electricity produced in the world as one big pie. Now, who gets the biggest slices?  Coal gets the biggest one. Natural gas gets the second biggest. Together, they supply more than half of the world's power.

On the clean energy side, hydropower makes up about 14% and nuclear about 9%. But neither has grown much in eight years. They are holding their ground, nothing more. The real growth is coming from just two sources: solar and wind, which together now make up about 17% of global electricity. That is real progress. But they are still catching up with fossil fuels, not replacing them.

Solar Grew 6x, Coal Still Grew Too

Solar energy grew roughly 6x between 2017 and 2025, jumping from about 445 TWh to 2,779 TWh. That is one of the fastest expansions of any energy source in history. But during the same eight years, coal added about 800 TWh of new generation. Gas added nearly 950 TWh.

Fossil fuel's share of the pie dropped from about 65% to 57%. That sounds like progress, and it is. But the actual amount of electricity from fossil fuels went up, not down. From roughly 16,600 TWh to over 18,200 TWh.

How is that possible? Because the pie itself got much bigger. Rising demand pulled both sides upward.

Think of it this way. If your family's food needs go up, buying more vegetables does not mean you stop buying rice. You buy both. The same thing is happening with energy. Renewables are feeding the new demand. Fossil fuels are still feeding the old one.

Among fossil fuels, the stories are different. Gas has been the quietest, steadiest grower, rising every single year without exception. Oil is the only fossil fuel that actually declined. And coal, despite all the global focus on cutting it, still added 800 TWh in absolute terms.

So why is the shift so slow? A few key reasons:

• Global electricity demand keeps rising, so renewables end up meeting new demand rather than replacing existing fossil fuel plants.
• Solar and wind depend on the weather, which makes them unreliable as the only source of power.
• Battery storage is improving but still too expensive to work at the scale most countries need.
• Most power grids were built for coal and gas, and redesigning them for renewables takes time and money.

The Evening Peak Problem in Solar

Here is something most people do not think about. Electricity has to be made at the exact moment it is needed. You cannot produce a lot during the day and save it for later, at least not cheaply. The system has to match supply with demand every second.

This creates a big problem for solar energy.

Solar panels produce the most electricity during the afternoon when the sun is strong. But most people use the most electricity in the evening, after sunset, when everyone is home using lights, fans, ACs, TVs, and kitchen appliances.

So solar is at its highest when demand is moderate. And it drops to zero just as demand hits its peak. This gap is one of the biggest challenges in the energy world today.

Until large, affordable batteries can store daytime solar energy and release it at night, solar will always need backup. And that backup, for now, comes from fossil fuels.

Coal and gas power plants can produce electricity whenever needed. They do not depend on the weather or time of day. You can turn them on when demand rises and scale them down when it falls. This kind of power is called dispatchable power, meaning it can be sent to the grid on demand.

Gas is especially useful here because it can ramp up and down quickly, making it a natural partner for solar and wind. When the sun goes down, gas steps in. This is one of the key reasons gas keeps growing every year.

India Tells the Same Story

India is a great example of this global pattern. The country is adding solar and wind energy at a fast pace and has some of the largest solar projects in the world.

But at the same time, electricity demand is growing rapidly. More people are buying ACs, refrigerators, and electric devices. Factories need more power. Cities are expanding. India's coal production hit a record 997 million tonnes in 2023-24, even as the country was adding record solar capacity.

The same evening peak problem exists here. When the sun sets, solar drops, but demand shoots up. Coal and gas fill that gap. So India, like the rest of the world, is running both systems side by side.

What This Means for Energy Stocks in India

Now that you understand how the energy system actually works, let us connect it to something practical. Where do investors fit into this picture?

Fossil fuels are not going away anytime soon. Renewables are growing fast but cannot do it alone. Batteries and grid upgrades are the missing pieces. And India is right in the middle of all of this. Each of these realities points to a different set of companies. Here are some theme one can explore around this: 

1. Renewables: The Companies Building the Future

Adani Green Energy is one of the largest renewable energy companies in India, with a massive portfolio of solar and wind projects. Tata Power is expanding aggressively into solar rooftop installations, EV charging, and clean energy. Suzlon Energy is one of India's oldest wind energy companies, making wind turbines and developing projects across the country. Waaree Energies is a major solar panel manufacturer, supplying panels for large projects as well as rooftop installations.

2. Grid Infrastructure: The Backbone Nobody Talks About

Even if India adds massive amounts of solar and wind, that electricity is useless if the grid cannot carry it. The old grid was built for coal. It needs serious upgrades. Power Grid Corporation operates India's national electricity transmission network. Adani Energy Solutions is building the energy corridors that will connect renewable energy zones to cities and industrial centres.

3. Battery Storage: The Missing Piece

The evening peak problem has one clear solution: store daytime solar energy in batteries and release it at night. India's battery storage market is still early but growing fast. Exide Industries is investing heavily in lithium-ion manufacturing for EVs and grid storage. Amara Raja Energy and Mobility is transitioning from lead-acid to advanced lithium-ion and energy storage systems. HBL Power Systems makes specialised batteries for defence and railways, and is now entering grid-scale storage.

How to Think About This

The energy transition is not a switch. It is a long, gradual shift where old and new systems run together for years, maybe decades. Traditional energy companies still generate strong cash flows. Renewable companies are positioned for long-term growth. Grid and battery companies are solving the problems that make the whole transition possible. The smartest approach is to understand all the categories and think about which part of the energy story you want to be part of.

Final Thought

For the world to truly reduce its dependence on fossil fuels, three things need to happen. Battery storage needs to become much cheaper. Power grids need to be redesigned for variable energy. And the overall mix needs to become more diverse, with solar, wind, nuclear, hydro, and storage all working together.

The global energy transition is real. But fossil fuels still form the backbone of the electricity system, especially when reliability matters most. The world is not switching from one system to another. It is running both at the same time, with fossil fuels doing the heavy lifting while renewables slowly get ready to take over. The change is coming. But it will take longer than the headlines suggest.