What are the necessary conditions for a tidal power plant to be effective?

For a tidal power plant to be effective, it requires a location with a significant tidal range, which is the difference in water level between high and low tides. Additionally, the site should have a suitable geography that allows for the construction of infrastructure, such as barrages or underwater turbines, to harness tidal energy efficiently. Environmental impacts must also be manageable to ensure minimal disruption to local ecosystems. Finally, reliable technology and economic viability are crucial for the plant to be sustainable and competitive with other energy sources.