For most of the 20th century, the world worried about oil. Wars were fought over energy security, economies were shaken by oil shocks and governments built strategic petroleum reserves to protect themselves against supply disruptions.
In the 21st century, however, the strategic commodity that may define prosperity, national security and geopolitical power is becoming something even more fundamental: electricity.
The world is entering what the International Energy Agency calls the “Age of Electricity.” Electricity is no longer merely one component of the energy system. It is becoming the foundation of transportation, artificial intelligence, manufacturing, communications, cooling, healthcare and modern urban life.
And this transformation is creating a problem that the world has barely begun to confront. Electricity demand is accelerating faster than the infrastructure required to produce, transmit, store and deliver it.
The consequences could become particularly visible during the 2030s and increasingly severe as we approach the mid-2040s. The numbers are already sending a warning
According to the IEA’s Electricity 2026 report, global electricity demand increased by 3% in 2025, following growth of 4.4% in 2024. The IEA expects demand to grow at an average 3.6% annually between 2026 and 2030.
That translates into approximately 1,100 terawatt-hours (TWh) of additional electricity consumption every year—50% more annual growth than the average recorded during the previous decade. Global electricity consumption is projected to rise from approximately 28,200 TWh in 2025 to 33,600 TWh in 2030.
That is an extraordinary increase in just five years. More importantly, the IEA expects electricity demand to grow at least 2.5 times faster than overall energy demand through 2030. The relationship between economic growth and electricity consumption is changing fundamentally because electricity is becoming the preferred energy source for an expanding number of economic activities.
The world is not simply consuming more energy. It is electrifying its economy.
India provides a glimpse of the future. India is one of the clearest examples of what is coming.
The IEA forecasts Indian electricity demand to grow by an average 6.4% annually through 2030, adding more than 570 TWh to annual consumption over five years.
Industry is expected to account for roughly one-third of this additional demand. Cooling alone is expected to contribute more than 20% of demand growth, while electrification of agriculture and transport will add further pressure. India’s peak electricity demand provides an even more revealing statistic. National peak load increased by 54%, from 162 GW in 2017 to 250 GW in 2024.
This is not simply about Indians using more electricity every year. It is about millions of consumers demanding electricity at the same time – particularly during extreme heat.
India therefore illustrates one of the central challenges of the coming electricity era: the difference between having enough electricity over an entire year and having enough electricity during the most demanding hour of the day.
Artificial intelligence is creating a new electricity race. The AI revolution is often described as a race for semiconductors, computing power and algorithms.
It is also a race for electricity.
Every major AI model requires data centres. Every data centre requires enormous quantities of electricity, and AI infrastructure requires power that is increasingly reliable around the clock.
The IEA’s World Energy Outlook 2025 says investment in data centres is expected to reach approximately $580 billion in 2025, exceeding global investment in oil supply, estimated at $540 billion. The IEA also expects electricity consumption from data centres to triple by 2035.
The geographical concentration is particularly important. More than 85% of new data-centre capacity expected over the next decade is projected to be concentrated in the United States, China and the European Union.
This means AI competition will increasingly become electricity competition. Countries may possess the world’s best chips and AI researchers, but if they cannot provide sufficient reliable electricity to power data centres, their technological ambitions will eventually encounter a physical constraint.
The new strategic equation could therefore become: Compute requires chips. Chips require factories. Factories require electricity. AI requires all three. Climate change will intensify the electricity problem
The second major driver is climate. As temperatures rise, electricity demand for air conditioning rises. The result is a dangerous feedback loop.
Hotter weather increases electricity consumption. Higher peak demand requires additional generation and grid capacity. If that electricity comes from fossil fuels, emissions increase. Rising emissions contribute to further warming, which creates greater demand for cooling.
The problem is particularly serious in India, Southeast Asia, the Middle East and Africa.
In India, the IEA expects cooling to account for more than one-fifth of electricity-demand growth through 2030. This means air conditioning is not merely a consumer-product story. It is increasingly an electricity infrastructure story.
The countries that experience the greatest temperature increases may also be the countries experiencing some of the fastest electricity-demand growth.
The real crisis may be the grid. This is where the argument becomes more serious. The world does not merely need more power plants.
It needs transmission lines, distribution networks, transformers, substations, storage and intelligent grids capable of moving electricity from where it is generated to where it is consumed.
And the infrastructure is falling behind. The IEA estimates that more than 2,500 GW of renewable-energy, storage and large electricity-load projects – including data centres – are currently stalled in grid-connection queues worldwide.
At the same time, annual grid investment is approximately $400 billion. The IEA says annual grid investment would need to rise by roughly 50% by 2030 to meet projected electricity demand.
This creates a remarkable mismatch. Investment in electricity generation has increased by almost 70% since 2015, reaching approximately $1 trillion annually.
Grid investment, however, has increased at less than half that pace. The result is congestion. The world is increasingly capable of producing electricity but not necessarily capable of moving it to where it is needed.
That could become one of the defining economic problems of the next two decades.
The IEA’s current detailed electricity forecast extends to 2030, while its long-term scenarios examine the energy system through 2050. The IEA’s 2025 World Energy Outlook provides data points for 2035, 2040 and 2050 under different scenarios.
Global electricity demand was approximately 28,200 TWh in 2025 and is expected to reach 33,600 TWh by 2030. If the broad trajectory of electrification continues through the 2030s and 2040s, the world could be operating an electricity system dramatically larger than today’s.
The precise number will depend on economic growth, energy efficiency, AI adoption, electric vehicles, industrial electrification, population growth, climate conditions and technology. But the strategic question remains the same:
Can the world build the electricity system of 2046 quickly enough? That is the real question. Renewables will help – but they are not the entire answer. There is considerable reason for optimism.
The IEA expects renewables and nuclear power together to provide approximately half of global electricity generation by 2030. Renewable generation is forecast to grow by roughly 1,000 TWh every year, with solar PV alone contributing more than 600 TWh annually. But generation capacity alone does not guarantee electricity security.
Solar power is intermittent. Wind generation varies. Hydropower depends on rainfall and water availability. Batteries provide short-duration flexibility but cannot solve every seasonal or long-duration problem.
Nuclear power, meanwhile, can provide dependable low-carbon electricity but requires significant capital, technical expertise and long development timelines.
The future therefore requires an electricity portfolio rather than a single technological solution.
Solar. Wind. Hydro. Nuclear. Natural gas. Battery storage. Pumped hydro. Demand response.Transmission. Energy efficiency. And increasingly intelligent grids capable of balancing all of them.
Electricity could become the new geopolitical commodity
Oil once determined the strategic importance of nations because modern economies depended upon access to petroleum. Electricity could create an even broader form of dependence.
A country without reliable electricity cannot run advanced factories. It cannot operate modern hospitals efficiently. It cannot support large AI data centres. It cannot electrify transport. It cannot cool rapidly growing cities. It cannot maintain a sophisticated digital economy.
Electricity security will therefore increasingly become economic security, technological security and national security.
Countries with abundant and reliable electricity could attract industries, data centres, semiconductor manufacturing, electric-vehicle production and advanced technology.
Countries suffering chronic shortages could lose investment and competitiveness.
The geopolitical map of the 2040s may therefore be influenced not only by oil reserves and gas pipelines but by nuclear reactors, renewable-energy zones, transmission corridors, battery supply chains and electricity prices.
The electricity crisis could be one of infrastructure, not scarcity
This distinction is crucial. The world may not literally run out of energy.
Humanity has enormous potential for solar, wind, hydro, nuclear and other forms of generation.
The danger is that demand grows faster than infrastructure. A world can have sufficient electricity-generating potential and still experience blackouts. It can have abundant solar power but insufficient transmission.
It can have wind farms but no grid capacity to connect them. It can have AI companies ready to build data centres but insufficient electricity connections. It can have enough annual generation but still suffer shortages during a heatwave because peak demand overwhelms the system.
That is why the electricity crisis of the next 20 years should be understood as a race. The race is between electrification and infrastructure.
If infrastructure wins, electricity can become the foundation of a new era of economic growth. If demand wins, electricity shortages, rising prices, grid congestion and reliability problems could become a defining constraint on global development.
The oil crisis of the 20th century taught the world that energy security cannot be taken for granted. The lesson for the 21st century is different. Electricity security cannot be taken for granted either.
By the time the world reaches the mid-2040s, electricity may no longer be merely another utility. It could be the most important strategic commodity on Earth.
