Clean energy investment hits record $2.2 trillion as Iran war reshapes global power balance
Energy security concerns from the Iran war are accelerating the clean power buildout, shifting geopolitical weight away from fossil fuel exporters.
Global clean energy investment reached a record $2.2 trillion in 2025, twice the flow into fossil fuels, according to Foreign Policy. The surge comes as the U.S.-Iran war and its aftermath continue to reshape energy politics across the Global South, where oil and gas price spikes are doing what decades of climate diplomacy struggled to achieve.3
The scale of the spending shift is substantial. The International Energy Agency's World Energy Investment 2026, published in May, projects that of the $3.4 trillion in total energy investment this year, clean energy will capture roughly two-thirds — a near-doubling of the clean-to-fossil spending ratio in just a few years.4
The conflict has arguably accelerated rather than disrupted this trajectory. Ships are beginning to trickle through the Strait of Hormuz after months of near-total closure, but the effects of this year's energy crisis will not fade quickly from the global economy, analysts at Oilprice.com noted. The turmoil has catalyzed investment in domestically available energy sources.6
Solar sits at the center of that push. The technology is set to become the world's largest source of electricity by 2032, supported by lower costs, technology improvements and surplus manufacturing capacity, according to a report from Asian Power. Battery storage capacity is expected to reach 3.8 terawatts by 2035.1
The IEA predicts investment in renewable power projects will reach $665 billion this year, with $365 billion alone earmarked for solar. Electricity grids are set to attract around $550 billion, almost a 20% increase from last year, while battery storage investment is set to surpass $100 billion.2
But framing this as a winner-takes-all contest between clean energy and fossil fuels misses how the Iran war is actually playing out. Analysts say America and China could both emerge from the conflict in stronger positions, with more oil flowing from U.S. wells and new shiploads of Chinese EVs transiting the seas. "I don't see this as being a pro-transition or anti-transition event," one analyst told E&E News.5
That dual-track outcome is visible in current market prices. ICE Brent crude front-month traded at $93.31 per barrel as of August 21, while Urals crude stood at $88.85 per barrel, up 3.80% in the latest session. Meanwhile, global shipping of clean energy products rose 1% in 2025 to $479 billion, according to BloombergNEF's Energy Transition Supply Chains 2026 report.2
The Global South is where the shift is most pronounced. Oil and gas price spikes following the start of the U.S.-Iran war are reshaping energy politics across developing economies, pushing governments toward energy sources that do not require imports from volatile regions. The threat of unrest is decarbonizing the Global South, as Foreign Policy put it.3
Energy security, not climate goals, is now driving the clean power boom. Countries are building renewables because they are domestically available and price-stable, not because of international commitments — a distinction that suggests the investment cycle is less vulnerable to policy reversals than previous decarbonization efforts.6
In the United States, solar grew more than 28% in 2025. Globally, renewables increased from 32.2 exajoules to 35.4 exajoules, the fastest-growing major energy category in the data. In many regions, solar is now one of the cheapest sources of new electricity generation.7
The durability of this shift is what analysts are debating. Some draw parallels to the 1970s, when countries prioritized stable energy supplies in the wake of oil shocks. "I think this hammers home to everyone — consumers, producers, industrialized states, emerging markets alike" the importance of reliable energy, one analyst told E&E News, suggesting the current shift could prove as lasting as the post-1973 diversification.5
U.S. oil output is rising even as Chinese EV exports surge, and the war has demonstrated that both systems can expand simultaneously. The harder question is whether the $2.2 trillion clean energy investment figure holds once crude prices normalize, or whether the current pace reflects a crisis-driven surge that fades as Hormuz traffic recovers and supply fears ease.5