Estimate cost of building a tidal barriage?

The cost of building a tidal barrage can vary significantly based on factors such as location, design, environmental considerations, and size. Generally, the cost ranges from $5,000 to $10,000 per installed kilowatt of capacity, leading to total project costs that can range from hundreds of millions to several billion dollars for large-scale projects. For example, the La Rance tidal power station in France, one of the first of its kind, had an estimated cost of around $80 million in the 1960s, equivalent to over $600 million today. Detailed feasibility studies are essential for accurate cost estimation.