Energy storage requirements for in-stream tidal generation on a limited capacity electricity grid

The WEC and TEC are modeled based on measured and simulated wind and tidal speed data respectively. An ESS is modeled to de-couple the TEC output from the grid demand. A curtailment analysis is conducted for various ESS capacity and power sizes to determine the economic benefit. Avoidance of all curtailment requires nearly 7 MWh of storage. Significant economic benefit may be found by reducing the ESS to less than 3 MWh, resulting in minor curtailment.