First of all, let me correct the above statement: the original plan for the Three Gorges Power Plant is 26 units of 700,000 kilowatts, which means an installed capacity of 18.2 million kilowatts and an annual electricity production of 84.7 billion kilowatt hours. Later, an underground power station was built in the “Baishijian” mountain of the Right Bank Dam, and six 700,000 kilowatt hydroelectric generators were built. In addition, the Three Gorges hydroelectric power station itself has two 50,000 kilowatt power plants. The total installed capacity reached 22.5 million kilowatts, with an annual electricity production of 100 billion kilowatt hours.
It is incorrect to directly multiply the installed capacity by the one-year period to calculate the annual electricity production. Can you guarantee that all units will operate at full capacity?capacity throughout the year? Certainly not. Firstly, there is not enough water and secondly, the unit also needs maintenance. It is therefore impossible to operate all the units continuously over the course of a year.
The current price of electricity on the Three Gorges Power Station grid is 0.25 yuan. According to this calculation, 1,000 × 0.25 = 25 billion.
The total investment of the Three Gorges project. is 180 billion, 1800÷250=7.2 years.
Since the annual electricity price income of the Three Gorges Hydropower Station is deducted from the cost factors, the cost can be recovered in about 15 years.