Iberdrola remains one of the largest wind farm developers in the world. The company now operates more than 23 GW of wind capacity across over 400 wind farms in 14 countries. Its wider renewable portfolio is also expanding, with installed capacity outside its core markets reaching 4,372 MW by mid-2025, including 2,039 MW of onshore wind and 1,322 MW of offshore wind.

Some of the largest upcoming offshore wind farm projects of Iberdrola are the Gavina Floating Offshore Wind Farm, the San Cibrao Floating Offshore Wind Farm, the San Brandan Floating Offshore Wind Project, the Happo Noshiro Offshore Wind Farm in Japan, and the Windanker Offshore Wind Farm in Germany. These sites represent the next wave of large-scale growth and support Iberdrola’s plan to add about 3.5 GW of offshore capacity by 2028.

This article highlights the top five upcoming Iberdrola offshore wind farm projects and explains their capacities, technologies, and expected impact on the company’s long-term strategy.

List of Top 5 Upcoming Offshore Wind Farm Projects of Iberdrola

Gavina Floating Offshore Wind Farm

The Gavina Floating Offshore Wind Farm is one of Iberdrola’s largest upcoming wind projects, designed to advance Spain’s offshore wind sector. The 500-megawatt floating development is planned in the Mediterranean Sea and is expected to play a central role in the country’s emerging offshore wind strategy. Iberdrola plans to deploy floating wind technology suited to deeper waters, positioning Gavina as a key step toward large-scale offshore deployment in Spain.

The project is in the announced and pre-construction phase, with commissioning targeted for 2030. Once operational, Gavina will provide clean electricity to support Spain’s energy transition goals. It also signals Iberdrola’s intention to lead in floating wind, an area expected to grow rapidly across Southern Europe.

San Cibrao Floating Offshore Wind Farm

The San Cibrao Floating Offshore Wind Farm is one of Iberdrola’s flagship proposals for Spain’s Atlantic coast and a major step in the country’s move toward large-scale floating wind. The planned 490-megawatt project would be located off Galicia, north of A Coruña and east of Cape Ortegal, an area with strong wind conditions and deep waters suited to floating foundations.

Iberdrola began the permitting process in 2021, including environmental consultations and survey approvals. The project will use 35 turbines mounted on floating structures and is fully developed and owned by Iberdrola. Once built, San Cibrao is expected to be among the largest floating wind farms in the world.

San Brandan Floating Offshore Wind Farm

The San Brandan Floating Offshore Wind Project is a major addition to Iberdrola’s pipeline and one of the most advanced floating wind proposals planned for Spain’s Atlantic coast. The 490-megawatt project would be located off Galicia, where deep waters make floating technology essential. Iberdrola aims to position San Brandan as Spain’s first industrial-scale floating offshore wind farm, signalling a shift from pilot projects to full commercial deployment.

The project is currently in the announced stage, and commercial operations are expected in 2028. San Brandan will use floating foundations, enabling turbines to operate far offshore where wind resources are stronger and more consistent. As part of Iberdrola’s broader strategy in Galicia, the project strengthens the company’s leadership in floating wind and supports Spain’s long-term offshore energy ambitions.

Happou Noshiro offshore wind farm

Happou Noshiro Offshore Wind Power is a 375-megawatt fixed-bottom offshore wind project planned off the coast of Akita in the Sea of Japan. The project covers an area of about 40 square kilometres and is being advanced by GK Happou Noshiro Offshore Wind, with Iberdrola Renewables Japan, Japan Renewable Energy, Tohoku Electric Power, and a fourth partner, each holding a 25 percent stake. It is currently in the permitting stage, with construction scheduled to begin in 2026 and commercial operations targeted for June 2029.

The project will use fixed monopile foundations and 25 Vestas turbines rated at 15 MW each, making it one of the largest offshore wind installations planned in Japan to date. Over its anticipated 30-year operational life, Happou Noshiro is expected to support Japan’s offshore wind rollout while helping diversify the country’s energy mix.

Windanker Offshore Wind Farm

Windanker Offshore Wind Power Plant is Iberdrola’s third major offshore project in the German Baltic Sea and a central pillar of its growing Baltic Hub. The 315 MW wind farm will use 21 Siemens Gamesa SG 14-236 DD turbines, each capable of producing up to 15 MW, and will deliver enough clean electricity to supply around 600,000 people a year.

Iberdrola holds a 51 percent stake while Kansai Electric Power owns 49 percent. The project represents more than EUR 1 billion in investment and is scheduled to be commissioned in the final quarter of 2026. Construction is advancing, supported by a EUR 500 million EIB green loan guaranteed by Spain’s export credit agency, Cesce. 

The first monopile foundation, measuring up to 84 metres and weighing 2,100 tonnes, entered fabrication in October 2025. Turbine installation is planned for 2026, following geotechnical studies and the final regulatory approval granted by Germany’s Federal Maritime and Hydrographic Agency in April 2025. Once operational, most of Windanker’s output will be sold via long-term PPAs.

Conclusion

The five upcoming projects show how Iberdrola is preparing its next phase of large-scale growth. Gavina, San Cibrao, and San Brandan will advance floating wind in Spanish waters, while Happo Noshiro will strengthen the company’s presence in Japan, and Windanker will expand the Baltic Hub beyond 1.1 GW. Each project adds to Iberdrola’s offshore momentum and supports its broader push to modernise and diversify its global wind fleet.

Iberdrola plans to keep accelerating this build-out, targeting about 3.5 GW of new offshore capacity by 2028. The company continues to invest in digital operations, advanced turbine technology, floating foundations, and large-scale industrial partnerships such as the Navantia–Windar monopile programme.

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