The agreement covers three offshore wind projects with a combined capacity of 1.04GW.
These are the Hai Long 2A and Hai Long 2B projects, with 300MW and 232MW of capacity respectively, as well as the 512MW Hai Long 3 project.
Under the agreement, Siemens Gamesa will supply 73 of its SG 14-222 DD offshore wind turbines, each of which has 14MW of capacity.
The turbines will be installed 50km from the coast of Changhua County.
Hai Long offshore wind project director Felipe Montero said: “As the Hai Long project approaches financial close and the start of the execution phase, the signature of the contracts with Siemens Gamesa mark a hugely important milestone for us.
“The turbine supply agreement is both the biggest construction contract that will ever be awarded for the Hai Long project, as well as an enabler of the expansion of Siemens Gamesa’s nacelle factory.
“This plays a crucial role in our localisation efforts and shall become a cornerstone of Taiwan’s local offshore wind supply chain.”
Under the agreement, Siemens Gamesa has signed a 15-year service contract and has the option to extend this to 20 years.
It will also provide offshore logistics and operations and maintenance (O&M) services for all three projects.
Siemens Gamesa offshore business CEO Marc Becker said: “The Siemens Gamesa – Hai Long collaboration lights the way for more great developments in the Taiwanese offshore wind industry.
“We’re keen to deliver these projects and extend our position in leading the Taiwanese offshore revolution.
“We’re also excited that our expanded offshore facility in Taichung will be able to support this agreement following its intended conversion into a firm order.”