Ocean waves can generate a lot of electrical energy
Fresh breeze at open sea can cause waves with height up to 1,5 meter. Small wave energy devices assembled in a circular pattern will ease the maintenance. Each device can be disconnected and brought to land for maintenance.
The figure above illustrates a wave energy plant consisting of energy devices arranged on the circumference of a circle with diameter 130 m. The centre distance between the devices would be approximately 20 m. If the average wave energy is 40 kW/m (for example at the Norwegian Sea) the average energy produced by the plant would be 1,62 MW.
260 plants would annually produce about 3,6 TWh. The required sea area for the plants would be about 0,13 x 47 km.
The figure above illustrates a wave energy plant consisting of 8 assemblies of energy devices where each assembly consists of 20 buoys arranged on the circumference of a circle with diameter 130 m. The centre distance between the devices would be approximately 20 m. If the average wave energy is 40 kW/m the average energy produced by the plant would be 12,96 MW.
32 plants would annually produce about 3,6 TWh. The required sea area for the plants would be about 0,73 x 25 km.