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Executive Summary This manual details a set of methods for measuring and quantifying turbulence at tidal power sites. It is written to aid site and device developers in quantifying the turbulence statistics that are important to tidal energy converter power-performance and lifetime, key parameters needed to estimate cost of energy. This manual details mooring design, instrument configuration, data processing steps and analysis guidelines for estimating turbulence statistics at tidal energy sites. This provides the tidal energy industry with a low-cost methodology for quantifying the turbulent inflow that reduces the operational lifetime of tidal energy turbines. This will help the industry to design tidal energy devices that are more reliable, less expensive and more efficient, which will lower the cost of tidal energy. iv