Question: what are tidal pros and cons?
Answer: 5 Key Advantages of Tidal Power. Cleanliness. Tidal energy is green: It does not pollute the atmosphere with greenhouse gases. Consistency. ... 
5 Key Disadvantages of Tidal Power. Intermittence. Tidal power is abundant only at specific times of day, so storage is required to ensure 24-hour power. Startup costs.