The Energy Dilemma of the Digital Age

It may look as though fossil fuel's reign over the global energy system is finally coming to an end. Renewable energy investment keeps setting records. Electric vehicles are spreading rapidly. The rise of artificial intelligence seems to herald a genuinely new era. But the underlying data tell a more stubborn story.

In 2024, roughly 80% of global energy supply still came from fossil fuels. A decade earlier, that figure stood at 82%. Despite the noise, the headlines, and the billions of dollars invested, only a two-point decline was achieved in ten years. In other words, while green energy has expanded, it has barely managed to shake fossil fuel's dominant position. The reason is that the picture is genuinely complicated: rising demand, political agendas, and the enormous energy appetite of the new digital economy are all pulling in different directions at once.

Coal, the chief culprit of the climate crisis, remains at the top. In 2024 it hit a record 8.8 billion tonnes, and similar levels are expected in 2025. China and India showed modest declines, but the United States saw a 10% increase driven by rising electricity demand and gas prices. The EU is essentially standing still. The International Energy Agency (IEA) expects a marginal global decline in 2026 — not coal's disappearance, but a temporary check on its growth.

EV sales are climbing fast, yet rising demand in Asia is keeping oil prices elevated. Natural gas use is falling in Europe and Japan but climbing in Asia; methane leakage makes this so-called 'transition fuel' deeply contested on climate grounds. And with Donald Trump's second term, the balance in the US has tilted back toward fossil fuels: deregulation favoring coal and oil production has returned, and Paris Agreement targets have been pushed to the background. In short, while the world discusses a gradual fossil phase-out, its largest economy is executing a sharp U-turn — with consequences not just for emissions but for prices and trade flows worldwide.

The most consequential new variable in the energy equation is the explosive growth of data-center demand. Today, data centers consume approximately 1.5% of global electricity, and that share is expected to double within the next year. As they expand, the strain on power grids intensifies. In the US, demand has risen sharply enough that roughly 100 gigawatts of new gas-fired capacity has been planned specifically to meet data-center needs — a figure equivalent to roughly three-quarters of Turkey's entire installed power capacity. The AI revolution, in effect, is creating a backdoor that could slow the renewable transition rather than accelerate it. And the issue is not electricity alone: data-center cooling systems have driven water consumption to dramatic levels. The infrastructure cost of the AI era is becoming a serious threat to global climate targets in its own right.

Are renewables actually replacing fossil fuels, or merely absorbing additional demand? According to The Guardian, 90% of new demand growth in 2025 will be met by renewables. China's case is particularly notable: coal's share of its electricity generation fell from 73% in 2016 to 51% in 2025, while renewable capacity has grown explosively. But the critical question remains open, and the evidence so far points toward the latter interpretation — renewables are mostly covering growth, not displacing an existing fossil fleet.

A further risk lies in infrastructure imbalance. While more than $1 trillion is being invested in generation capacity, only around $400 billion is going toward grid upgrades. This widening gap threatens energy security just as demand patterns are becoming more volatile and concentrated.

On one side, the scientific reality is unambiguous: once the 1.5°C threshold is permanently crossed, irreversible cascading effects begin. On the other side, political, economic and technological dynamics are making the picture more complicated by the day. The growth of data centers is placing a new burden on energy systems and, paradoxically, reopening the door to fossil infrastructure just as it seemed to be closing.

This tells us something important: the energy transition is a war fought on two fronts simultaneously. The first is against fossil fuels themselves — no climate target is realistic without phasing out coal and oil. The second concerns the new demand of the digital age — the insatiable appetite of data centers must be met through genuinely sustainable means. Nuclear power, particularly small modular reactors, carries risks that deserve careful scrutiny, but it offers a real glimmer of hope.

Green investment matters. But if fossil dependency continues at the same pace, the energy transition will remain little more than a showcase. Real transformation begins only when fossil fuels are phased out and the digital economy's energy hunger is managed sustainably — not one without the other. As IEA Executive Director Fatih Birol has warned, declaring climate change inevitable and giving up would be a recipe for global catastrophe. Humanity must break free of this double vise — the obstinacy of fossil fuels and the boundless hunger of algorithms — or it will end up burning not only its future, but its present.