What I've been able to find for the Hoover Dam says ~$50 million in the 1930's, today that's roughly $690 million. The entire Boulder Canyon Project cost around $165 million, which included the Hoover Dam.
The Hoover Dam has 17 hydro electric generators, capable of generating 2,074MW, which is quite large. The cost of a hydroelectric dam will be dependent on the river it crosses, the storage lake (how big does it need to be, is it man made, or already present, etc.), and how big it will be (how much electricity can it generate), and a host of other factors. I know of a 45MW (enough to power a small town, say 20,000 people) that cost $7.3 million in the 1930's.
100 million , get the people the land, training.
nuclear power plant
desaltination plants cost alot of money to both run and build. It can cost up to millions, maybe even billions of dollars.
A pithead is a power plant that is located in coal min e itself and thus reduces operating cost as transportation cost of carrying coal to power plant is reduced.
it costs about €500
The average cost of building a hydro power plant on the Columbia river is 559,220,000.
There is usually a large one off initial capital outlay, for example to build a dam. After that the electricity produced is almost zero cost You will usually be sued also, but it is too clean to turn down.
$300 million dollars to build hydroelectric dam......
very
1 Pence
6-7 billion
The cost is the difference of thousands of families without jobs
100 million , get the people the land, training.
it approximately costs 2500 USD/KW of electricity
Hydroelectric energy can vary in cost depending on factors such as the size of the project, location, and infrastructure requirements. While the initial costs of building a hydroelectric plant can be significant, the operating and maintenance costs are generally low compared to other energy sources over the long term. Additionally, once the plant is up and running, hydroelectric energy can provide a reliable and sustainable source of power.
It may cos around 100 MWh
Investment Cost - USD 2,291/kw Variable O & M - USD 0.00249/kwh Fixed O & M - USD 13.93/kw