Pros
Consistent Power - Tides move constantly throughout the day, which provides a consistent stream of electricity generation capacity.

Pollution-Free - By taking advantage of only the tide, tidal power creates no greenhouse gas emissions or water pollutants.

Low Operating Costs - Once installed there are few ongoing operating costs or labor costs, unless there is a device breakdown.

Renewable - No material resources are used or changed in the production of tidal power, making it a truly renewable power form.

Minimal Visual Impact - Tidal power devices are fully or nearly completely submerged in water well offshore. This reduces the “damaging of water views” that has been associated with offshore wind turbines.

Efficient - Tidal Power converts roughly 80% of the kinetic energy into electricity, as opposed to coal and oil which convert only 30% of the energy held within.

Locations - There are numerous locations for tidal power around the world. Other websites online have this number at 40, however the coast of British Columbia, Canada has 89 alone.



Cons
Device Breakdown - Strong ocean storms and salt water corrosion can damage the devices, which could increase the cost of construction to increase durability and/or cause frequent breakdowns.

Shifting Tides - Changes in tidal movement could substantially reduce efficiency of TSGs.

Marine Life Affected - Sea life could be harmed by the blades in the open and Venturi turbines. The floor mounting of TSGs could also disrupt the habitats of different sea life and plants.

High Initial Costs - The high cost of the different TSGs and cost of installing power lines underwater could lengthen the payback period and be cost prohibitive based on the characteristics and size of each project.

Few Implemented - There are relatively few commercial installations as compared to other technologies, such as wind and solar farms. As such, additional difficulties implementing these TSG devices could arise.

Reduced Sea Usage - The potentially larger footprint of TSG farms could reduce shipping and recreation areas.