This question is too broad. It is better to add specific information or the investment status of the project.
A power plant with a total installed capacity of more than 250,000 kilowatts is called a large hydroelectric plant; a power plant with a total installed capacity of 25,000 to 250,000 kilowatts is called a medium-sized hydroelectric plant; A power plant with a total installed capacity of less than 25,000 kilowatts is called a medium-sized hydroelectric power plant. Small power plants, those between 0,500 and 250,000 kilowatts are called Type I small plants, and those less than 0.05 million kilowatts are called Type II small plants. The size of each unit is carefully selected based on the design height, flow rate, water inlet and other conditions. A reasonable and economical model is generally selected for csmall and medium sized electrical inputs. The total number of units is usually selected as several. units.
The current cost of a hydropower plant is about 12,000-16,000 yuan/KW. You can make your own estimate based on location. As for the amount to invest, it depends on the guarantee rate of water quantity and water height, etc. for profit analysis. You can roughly estimate the investment based on: designed installed capacity = water height
Average electricity production is calculated based on the water supply guarantee rate and the size of the investment unit. The design unit will provide analysis of economic and technical indicators.