30,000 hours means that the electricity produced after the wind farm is put into operation will be purchased at electricity price A. The electricity price after 30,000 hours will be subject to the local unified electricity price (B). For example: electricity price A is 0.54 yuan/kWh, electricity price B is 0.2508 yuan/kWh. The 30,000 hours here refers to the number of full operating hours.
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