We measure tidal power generation by comparing the real-time power generated against the tidal flow. Seabed mounted Acoustic Doppler Current Profilers (ADCPs) are used to acquire water level, current and wave data for the Fall of Warness test site. The instruments measure the velocity and direction of current at high vertical resolution and high frequency sampling.
As well as the hydrodynamic conditions, weather data is gathered from an onshore meteorological station on Eday. The measurement of electrical power supplied to the Grid via the substation allows the assessment of the performance of each device.
Below is a sample output of velocity data from an ADCP survey showing a 12-hour cycle. Samples are coloured from blue (for slow moving cells), through to red (for fast moving cells). This type of data is typically used by a developer to help them design their device to the precise operating conditions at the test site.