Asia stocks surged to record highs following the signing of a US-Iran peace deal, with Japan's Nikkei and South Korea's KOSPI reaching new peaks. The rally comes as the Iran war, now concluded, has profoundly disrupted global energy markets and accelerated a shift toward renewable energy in Southeast Asia.

The conflict caused an energy crisis that defied expectations, according to Axios, and irrevocably altered Middle Eastern oil trade routes, Bloomberg reports. For Southeast Asia, the war served as a wake-up call for the energy sector, an IEA report cited by AP News noted, pushing governments and businesses to seek alternatives to imported oil.

Southeast Asia is now switching to solar power to relieve energy pressures exacerbated by the war, The New York Times reports. The peace deal has also dragged on oil prices, with markets muted amid the negotiations, while Asian tech stocks, including SoftBank which surged more than 10%, led the gains on the signing of the accord.

For Southeast Asian economies, the shift to solar could reduce long-term dependence on volatile fossil fuel markets, but the transition requires significant investment in grid infrastructure and storage. The peace deal's impact on oil prices may provide some near-term relief for energy importers, though the structural changes to the oil trade appear permanent.

Some analysts caution that a rapid solar buildout could strain supply chains and that peace in the region remains fragile, potentially reversing market gains if geopolitical tensions re-emerge.