允西

Yunxi Wind Farm is a wind power project selling wholesale power to Taipower's grid; its exact location cannot be reliably inferred from the project name alone.

Yunxi's capacity, combined with Yunhu, matches exactly the 640MW total of the Yunlin (Yuneng) offshore wind farm; the character for 'west' likely refers to the Taixi substation, one of two onshore points where the farm connects to the grid (the other in Sihu). Developed by wpd, Japan's Sojitz and Thailand's EGCO, all 80 8MW turbines were completed with phased commercial operation from 2024.

允西 (Wind) currently reports a net generation of 57.1 MW across 1 unit(s), against an installed capacity of 320 MW (17.8% utilization).

Wind has no fuel cost and zero direct emissions, but output fluctuates heavily with wind speed and is less predictable than thermal generation. Generation is markedly seasonal — the Taiwan Strait's strong northeast monsoon in autumn and winter typically produces much higher output than summer. Onshore turbines cluster along the western coastline, while offshore wind farms concentrate off Changhua and Miaoli.

The Taiwan Strait is internationally regarded as one of the world's best offshore wind resource areas, and government-led offshore wind zonal development since 2018 has driven wind's share of generation steadily upward. Wind and solar are the two pillars of Taiwan's renewable expansion, but their intermittency also increases the grid's need for flexible backup such as storage and gas-fired capacity.