CoRMaT's Advantage
CoRMaT is a second generation tidal turbine.
CoRMaT has been designed from first principles as a system for generating power in the tidal environment. Unlike first generaton devices which are often "marinised wind turbines", it's unique contra-rotating rotor system drives the following advantages:
Low Capital Installation Cost
- No expensive moorings or pilings required
- Can be commercially viable both at small "community " generating scale and as large deployed arrays
- Water dpeth is not a material challenge or cost driver
Reliability
- Simple direct drive generator eliminates need for gearbox
- No need for complex blade pitch control
Ease of Maintenance
- Easy to deploy and recover
- Device comprises only a small number of simple sub-assemblies
Efficiency
- Increased energy capture compared to single rotors
- Always optimally oriented to capture maximum energy from tidal flow
- Increased density of devices per farm due to decreased "wake" effects
Low environmental impact
- Minimum turbulence created by device
- Low rotor speed and increased blade density reduces likelihood of collision or damage to marine life
Library
Links to useful, interesting third party information:
- Introduction to tidal power
- Assessing a tidal resource
- Putting costs into perspective
- The Scottish Government on marine energy
- Environmental impact of marine renewable energy production (Scotland)
- Environmental impact of marine renewable energy production (Bay of Fundy, Canada)
- Scottish national tidal resources
National Policy
National policies and visions with respect to “green energy” generation:

