Global investment in the energy transition continues to accelerate. The International Energy Agency (IEA) forecasts energy-sector investment will reach US$3.4 trillion this year, up 5%, with advanced economies and China accounting for around 70% of the total. More than US$2.2 trillion will be directed towards renewables, nuclear power, electricity grids, energy storage, low-emission fuels, electrification and energy efficiency.
Renewable power investment alone now totals around US$665 billion annually, while nuclear investment has reached US$80 billion and low-emission fuels US$30 billion.
Electric mobility remains one of the principal growth engines. Global EV sales are expected to reach 21 million vehicles this year, a 20% increase on last year. At the same time, artificial intelligence and data centres have emerged as powerful new sources of electricity demand, particularly in the United States. Investment in data centres has now overtaken global spending on oil supply, with the energy sector contributing US$105 billion of associated investment in 2025—more than the entire energy-sector investment across Africa last year.
The benefits of this investment are already becoming apparent. According to the IEA, a decade of spending on renewables, nuclear energy, electrification and energy efficiency has materially improved energy security while reducing emissions across major fuel-importing economies. In 2025 alone these investments saved China, the European Union, Japan, Korea, Southeast Asia and India an estimated US$260 billion in fossil-fuel import costs. Roughly one-third of the savings came from renewable energy, another third from energy-efficiency gains, around one-fifth from electrification and the remainder from nuclear power.
Nickel and the energy transition
The implications for critical minerals are profound. As governments pursue energy security, artificial intelligence expands, technology costs fall and net-zero policies remain in place, demand for minerals such as lithium, cobalt, nickel, copper, graphite and rare earths will continue to rise. These materials underpin batteries, electricity grids, permanent magnets and increasingly digital infrastructure.
Nickel is particularly well positioned (Figure 1). The IEA projects that global nickel demand will almost double by 2050, with clean-energy technologies accounting for 44% of total demand, compared with just 17% in 2024. Electric



Global