Castle Wind Farm
South African wind farm
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The farm and power station are located near the town of De Aar, in Emthanjeni Municipality, Pixley ka Seme District, in the Northern Cape Province of South Africa. De Aar is located approximately 250 kilometres (155 mi) south of the city of Kimberley, the provincial capital. This is approximately 333 kilometres (207 mi) southwest of the city of Bloemfontein in neighboring Free State Province.
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Overview
The design calls for 16 tower-mounted Goldwind turbines, each rated at 6 megawatts. Total generation capacity is intended to be 89 MW. The power generated here will be transmitted via overhead high voltage lines, to the Hydra Substation, owned and operated by Eskom, where the power will enter the national grid. Hydra Substation is located approximately 9.3 kilometres (6 mi) southeast of downtown De Aar.
In June 2023, Sibanye-Stillwater, the off-taker, Eskom the transmitter and Castle Wind Farm Project Company, the independent power producer (IPP), signed a 15-year power purchase agreement (PPA) governing their relationships regarding this farm and the power generated here.
Funding and timeline
Rand Merchant Bank, a subsidiary of FirstRand Bank of South Africa, arranged the financing of this wind farm. Construction started in June 2023 and commercial commissioning is expected in 2025.
Other considerations
Expected benefits from this project include (a) energy cost savings (b) increased energy security and (c) mitigation of C02 emissions, all accruing to Sibanye-Stillwater. The additional wattage in generation capacity to the national grid is of benefit to Eskom and the country in decreasing the power deficit currently being experienced in South Africa, as June 2023.