Taiwan weighs a nuclear comeback as Hormuz shock tightens chip power—Saudi energy strains too

Taiwan is reportedly considering reversing its 2025 decision to exit nuclear power, citing the strategic vulnerability exposed by the crisis in the Strait of Hormuz. The island imports nearly all of its gas, oil, and coal, and the disruption risk has been framed as a direct threat to the energy-hungry semiconductor supply chain. The discussion links energy security to industrial competitiveness, arguing that stable baseload power is needed to sustain chip production. At the same time, Saudi Arabia’s energy infrastructure is showing how Middle East security shocks can spill into global supply reliability. A TotalEnergies refinery damaged by April drone strikes is reportedly operating at about 70% capacity, with full repairs not expected until early 2027. Geopolitically, the cluster points to a widening nexus between maritime chokepoints, Middle East security, and East Asian industrial strategy. Hormuz is a global energy artery, and any sustained instability increases the probability of higher prices, tighter shipping schedules, and insurance premia—pressuring import-dependent economies like Taiwan. Taiwan’s potential nuclear policy reversal would be a high-stakes signal to both domestic stakeholders and external partners about willingness to reconfigure its energy mix under strategic duress. Saudi Arabia’s refinery damage underscores that even major producers face operational constraints when drone warfare targets critical infrastructure. The beneficiaries are likely to be actors positioned to supply alternative energy, grid equipment, and semiconductor power-management technologies, while the losers include firms exposed to energy volatility and supply-chain delays. Market implications are likely to concentrate in energy, shipping, and semiconductor-adjacent power markets. If Taiwan accelerates nuclear re-entry planning, it could shift expectations for long-duration power capacity, influencing demand for grid modernization, turbine components, and nuclear fuel-cycle services, while also affecting regional electricity pricing risk. The Saudi refinery running at 70% capacity until 2027 suggests potential upward pressure on refined products and feedstock availability, which can transmit into petrochemical margins and industrial input costs. In trading terms, the most sensitive instruments would be crude and refined-product benchmarks, Middle East shipping and insurance risk indicators, and regional power-related equities; the direction is broadly risk-off for energy stability, with a likely medium-term cost premium. For chips, the immediate effect is less about output volume and more about financing and capex planning for power reliability, potentially raising the hurdle rates for facilities that cannot hedge energy risk. What to watch next is whether Taiwan moves from “considering” to formal policy steps, such as legislative proposals, regulator guidance, or procurement signals tied to nuclear and grid capacity. Trigger points include further Hormuz disruptions, sustained spikes in energy import costs, and any evidence that semiconductor customers are demanding stronger power-security commitments. On the Saudi side, the key indicator is whether repairs progress faster than the stated timeline and whether additional drone strikes target other refineries or pipelines. For markets, near-term monitoring should focus on refinery utilization rates, shipping insurance spreads, and refined-product differentials that would confirm whether the 70% operation translates into tighter supply. Escalation would be suggested by repeated attacks that extend outages beyond 2027 or by renewed Hormuz incidents that force rerouting and price shocks; de-escalation would be indicated by stabilized shipping flows and repair milestones met on schedule.

Geopolitical Implications

• 01

  Chokepoint risk (Hormuz) is increasingly shaping domestic energy policy in East Asia, potentially accelerating nuclear reconsideration despite prior exit commitments.

• 02

  Drone warfare against critical infrastructure in the Middle East creates a persistent operational constraint for major refiners, strengthening the link between security events and industrial input costs.

• 03

  Taiwan’s potential nuclear reversal could alter regional nonproliferation and energy diplomacy dynamics, affecting how partners assess long-term baseload capacity and safeguards.

Key Signals

• —Taiwan: draft legislation/regulatory guidance on nuclear restart, grid capacity procurement, and semiconductor customer power-security requirements.
• —Saudi Arabia: progress reports on TotalEnergies refinery repairs and whether utilization rebounds toward full capacity before early 2027.
• —Middle East: frequency and target set of drone strikes on refineries, pipelines, and ports; any renewed Hormuz incidents affecting shipping lanes.
• —Markets: refined-product differentials, refinery utilization indices, and shipping insurance spreads as real-time confirmation of supply tightness.