AVZ holders, page-7

https://www.irena.org/documentdownloads/publications/re_technologies_cost_analysis-hydropower.pdf
P.18 excerpt:
4.1
Total Installed Capital Costs of Hydropower

The total investment costs for hydropower vary significantly depending on the site, design choices and the cost of local labour and materials. The large civil works required for hydropower mean that the cost of materials and labour plays a larger role in overall costs than for some other renewable technologies. There is 18 Cost Analysis of Hydropower significantly less variation in the electro-mechanical costs. The total installed costs for large-scale hydropower projects typically range from a low of USD 1 000/kW to around USD 3 500/kW. However, it is not unusual to find projects with costs outside this range. For instance, installing hydropower capacity at an existing dam that was built for other purposes (flood control, water provision, etc.) may have costs as low as USD 500/kW. On the other hand, projects at remote sites, without adequate local infrastructure and located far from existing transmission networks, can cost significantly more than USD 3 500/kW