Taiwan's Offshore Wind: From the Typhoon Trials of the Taiwan Strait to the Survival Battle of the Global Green Supply Chain

In October 1999, when the first onshore wind turbine turned in Huxi Township, Penghu, Taiwan’s vision for green energy remained confined to scattered, small-scale experiments. Twenty-plus years later, the winter monsoon winds of the Taiwan Strait are no longer just a source of fear for fishermen; they have become the world’s most densely developed offshore wind resource and the most technically perilous natural testing ground. By the end of 2025, Taiwan’s cumulative offshore wind installed capacity had officially crossed the 4.4GW threshold, with green energy investments exceeding $3 billion USD ¹. This island has planted more than 500 giant turbines on the sea surface at an astonishing speed ², but it has also collided with multiple waves of geological limits, the restructuring of local supply chains, fishery rights conflicts, and geopolitical currents.

📝 Curator’s Note:
Many believe offshore wind is simply moving onshore windmills into the sea. But in the Taiwan Strait, this is an engineering tightrope walk—here lie the world’s harshest typhoon threats, complex seabed geology, and the massive, nearly insatiable demand for green power from global tech giants.

The Test of Gale-Force Winds and Deep Waters: The World’s Most Perilous Offshore Engineering

To erect an offshore turbine, often over a hundred meters tall, in the Taiwan Strait, engineers face nature’s most severe trials. Although the average water depth of the Taiwan Strait is not extreme, its soft sandy seabed, frequent seismic belts, and the fierce typhoons that sweep in during the summer-autumn transition make it impossible to directly replicate mature wind farm construction experiences from Europe and the United States.

"The technical challenges we face in deep waters and complex geology far exceed early experiences from the North Sea in Europe," recalled a senior project manager involved in offshore wind engineering. "Every underwater foundation piling must be precisely calculated within narrow windows of favorable sea conditions; a slight misstep could leave the entire construction vessel and its equipment immobilized."

To overcome these challenges, Taiwan’s offshore wind projects have gradually pushed into deeper waters. This requires not only larger-scale national policy support but also fundamentally reshapes the technological boundaries of Taiwan’s marine engineering ³. From early demonstration wind farms to the large-scale deployment of the block development phase, the Taiwan Strait has become a pressure-testing ground for global marine engineering technology in just a few short years.

The Next Battlefield in the Deep Sea: The Technological Frontier of Floating Turbines

As the development of fixed underwater foundations gradually approaches the physical limits of depth and geology, Taiwan’s offshore wind is being forced into the next unknown domain—Floating Offshore Wind. Unlike traditional turbines fixed to the seabed, floating turbines are anchored to the sea surface via massive floating platforms and deep-sea mooring lines, enabling the capture of stronger, more stable deep-sea wind energy in waters exceeding 50 meters in depth. However, this also presents entirely new challenges to Taiwan’s marine engineering, mooring system design, and future port infrastructure, testing whether the government and developers can strike a balance between cost and forward-looking technology ³.

Offshore Wind and Taiwan’s Energy Security

In an era of heightened global geopolitical tension, offshore wind is not merely a decarbonization tool but a component of national security. Taiwan relies on imports for over 97% of its energy; the lifeline of fossil fuels is highly vulnerable to blockades or disruptions in extreme scenarios. The hundreds of giant turbines scattered in the outer seas off the west coast are less power generation facilities and more a distributed offshore power network.

However, this decentralized structure brings new security and defense challenges. How to protect these critical infrastructures located on the sea surface during wartime, and ensure the resilience of the transmission network, has become an inescapable strategic consideration for national security agencies and the Energy Administration as they push toward the 2030 target of 13GW ⁴.

The Pivot of Localization Policy: From Protecting the Local to Entering the Global Track

While pursuing green energy transition, Taiwan once ambitiously attempted to build a complete local supply chain (Local Content), hoping that policy protection would allow local Taiwanese manufacturers to directly enter the red-hot track of the global offshore wind industry. However, this multi-year localization experiment soon faced the severe tests of cost, delivery times, and international competitiveness.

"In 2019, the word 'localization' was almost the core focus on the negotiation tables of all wind farm developers and the Ministry of Economic Affairs," pointed out an industry observer. "But when the global supply chain faced inflation and soaring raw material prices, overly rigid local procurement regulations caused delays in some wind farm progress."

Facing realistic challenges, the Ministry of Economic Affairs made key adjustments to the localization policy for block development around 2025, replacing rigid mandates with more flexible ESG and performance management mechanisms. This forces the local supply chain to prove itself directly in the price and quality tests of the international market ^{5 6}. This policy shift is not merely a regulatory correction, but a painful yet necessary rite of passage: Taiwan’s manufacturing sector must learn to compete head-on with top global suppliers without a protective umbrella.

📝 Curator’s Note:
The original intent to protect local industries is understandable, but the market does not wait for those who slow down. When tech giants like TSMC urgently need green power to meet international carbon tariffs and supply chain requirements, balancing efficiency and cost has become the most difficult balancing act for policymakers.

The Tendering Game of Block Development and the Tug-of-War over Electricity Prices

As Taiwan’s offshore wind enters the second phase of block development (R3.2) and subsequent adjustments to tendering drafts, the core market contradiction has shifted from "can it be built" to "who bears the high construction costs." International developers, facing a global high-interest rate environment, rising financing costs, and the tug-of-war between Taiwan’s local feed-in tariff rates and corporate Power Purchase Agreement (CPPA) mechanisms, have repeatedly expressed concerns about return on investment. Some foreign companies even slowed their investment pace during periods of policy transition, forcing the government to walk a tightrope between "keeping green electricity prices affordable" and "attracting continued international capital." The evolution of this tendering mechanism not only determines the financial life or death of wind farms but also directly impacts the cost curve for domestic high-tech industries to access affordable green power ¹.

Dialogue Between Fisheries and Sea Areas: The Symbiotic Path of Fishermen and Giant Windmills

Offshore wind is not just cold steel structures and power generation figures; it is directly embedded in the life veins of fishermen along Taiwan’s west coast for centuries. The outer seas of Changhua, Yunlin, and Miaoli have traditionally been major centers for Taiwan’s coastal fisheries. When giant turbines rose from the sea, fishermen’s first concern was: Where is my livelihood?

During the early demonstration wind farm phase promoted by Taipower, communication with local fishery associations in Changhua and elsewhere went through countless rounds of tug-of-war and negotiation ⁸. From initial resistance and skepticism to subsequent symposiums and field visits, both sides gradually explored possible paths for "fishery symbiosis." Some wind farms have begun attempting to promote marine ranching and ecological restoration in the waters surrounding the turbines, turning seas that had become silent due to fishing bans into sanctuaries for marine life.

However, conflict and dialogue have not completely ended. How to find a sustainable balance line between green energy development, local fishery rights, and marine ecological protection remains a social cost that Taiwan must continuously face as it moves toward its 2030 installation target (expected to reach 13GW) ³.

Facing Decommissioning and the Circular Economy After a Twenty-Year Service Life

After the first batch of offshore turbines has operated in the Taiwan Strait for over ten years, another hidden challenge is emerging—the management of turbine lifecycle and decommissioning/recycling. The design life of offshore turbines is typically 20 to 25 years; giant blades are mostly made of composite materials (such as fiberglass and resin), making them extremely difficult to naturally decompose or traditionally recycle.

While accelerating turbine deployment, Taiwan is still in the early stages of regulatory and technical setup regarding the handling of future massive blade waste, the removal of underwater foundations, or their on-site reuse. How to establish a local green energy circular economy will be the next long-term test for Taiwan’s offshore wind, following the generation of power.

Conclusion: The Island’s Destiny Blown by Sea Winds

Standing on the coastlines of Taichung or Changhua and looking out, the offshore turbines in the sunset glow resemble a row of silent, giant sentinels, turning quietly. They not only continuously supply the critical green power needed by Taiwan’s high-tech industries but also witness the survival wisdom of an island nation facing the dual pincers of global climate change and geopolitical politics.

From initial exploration and policy collisions to now moving toward deeper oceans, the story of Taiwan’s offshore wind is far from over. This is not just an engineering project of energy transition, but a contemporary maritime epic of courage, compromise, and transformation.

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