China’s 26‑MW Dongfang Turbine Sets Offshore Record as Floating Concepts Loom

Offshore wind turbines have grown from modest on‑shore designs to machines whose rotors span more than three football fields. The increase in swept area lets each turbine capture far more wind, reducing the number of foundations and cables needed for a given output. As turbines grow, engineers must also solve challenges in manufacturing, transport, installation, and durability in harsh marine environments. These trends reflect both policy pushes for renewable energy and advances in material science.

Dongfang Electric’s 26‑megawatt prototype was mounted on a coastal test base in Dongying, Shandong, in August 2025. Its rotor measures about 310 meters in diameter, giving a swept area near 77,000 square meters. Goldwind and China Three Gorges commissioned the GWH300‑20, a 20‑megawatt offshore turbine, in January 2026 off Fujian; it sits over 30 kilometers from shore in water deeper than 40 meters and holds the title of the largest turbine presently operating at sea. Mingyang Smart Energy announced in October 2025 a 50‑megawatt floating concept featuring two 290‑meter rotors on a V‑shaped platform, with a prototype planned for construction in Britain.

The Dongfang unit shows that single‑unit power ratings can reach the mid‑20 megawatt range even before full commercial deployment, while the Goldwind‑Three Gorges installation proves that 20‑megawatt machines can survive real‑world offshore conditions. Mingyang’s floating twin‑rotor design hints at a path toward even larger capacities without needing ever‑larger fixed foundations. Watch for the first sea‑based tests of Mingyang’s concept and for any follow‑on orders of the 26‑megawatt Dongfang design as developers evaluate whether mega‑turbines lower levelized costs enough to justify the logistical hurdles.