13.6 GWh per year from 6 MW, a capacity factor of 25.9%. Output is predictable years ahead, but it pulses with every tide and swings with the spring–neap cycle. LCOE ≈ 422 €/MWh.
Annual energy
13.6GWh
3,785 average EU homes
Capacity factor
25.9%
2,271 full-load hours
Installed capacity
6MW
Average power
1.6MW
Rated current speed
3.13m/s
rotor 18 m · Cp 0.42
Mean kinetic power density
4.67kW/m²
time-averaged ½ρ|u|³
Operating hours
6,457h/yr
640 h at rated power
LCOE
422€/MWh
capex 45 M€
Project IRR
-7.6%
at 200 €/MWh
- Current follows u = U_peak(t)·sin(2πt/12.42 h) with the peak varying sinusoidally between your spring and neap values over 14.77 days; flood/ebb asymmetry, turbulence and the vertical velocity profile are not modelled.
- Use the current at hub depth, not the surface. Array wakes and blockage effects matter for large arrays; this model treats turbines independently.