Siemens Gamesa offshore prototype runs above capacity for 24 hours

A prototype wind turbine recorded an extraordinary total of renewable energy production in a single day, contributing 359 MWh over a 24-hour period. To achieve this, it had to operate above its rated capacity, practically all day.

Siemens Gamesa’s SG 14-222 DD is one of the largest wind turbines in the world, matching the 14 MW rated capacity of GE’s largest Haliade-X turbines, and behind only the gargantuan 15 MW platforms of Vestas and the offshore world champion, the monstrous 16 MW MingYang.

The SG 14-222 DD, scheduled for mass production in 2024, uses three large 108 m blades, creating a sweeping circle of 39,000 m2. And although its nominal capacity is 14 MW, it offers a “power boost” function which can boost the power up to 15 MW.

This power boost feature, according to Siemens Gamesa Product Manager Peter Esmann, monitors site-specific conditions and stays active about 98% of the time, only shutting off in stormy winds or excessive turbulence. , at which point the turbine capacity drops back to 14 MW.

Even though is designed for offshore installationthis prototype was built on land, at the end of 2021 in Østerild (Denmark), and it is there that it reached its production record.

The reported daily total is only 1 MWh less than the theoretical maximum of 360 MWh this turbine would harvest if operated at full capacity for 24 hours straight. So it must have been an absolutely perfect day.

The 359 MWh it reached would supply the energy consumed daily by an average of 12,414 American households.

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