Project Description

Tidal Technology Center

When completed in 2019, Tidal Technology Center Grevelingendam (TTC-GD) will provide owners of new tidal energy technologies with the means to test, certify, validate and demonstrate their products in a fully operational tidal context. It will also provide a demonstration setup of four turbines capable of producing 0.5-1 MWe of energy.


TTC-GD aims to be the most cost effective international location to test, certify, validate and demonstrate tidal energy converters – technology that generates electricity by harnessing the power of tidal streams. Beyond technology demonstration, testing and verification, TTC-GD will provide a wide range of consultancy and research services, and lead the development of international standards for marine energy. TTC-GD will also forge alliances with other countries, exporting its knowledge around the world to stimulate the development of a global marine renewables industry. TTC-GD is located at the ‘Flakkeese Spuisluis’, part of the Delta Works in Zeeland, the Netherlands.


3 test channels of 3-10.5 metres wide, with a depth of 5.75 metres

Monitor and data log systems
Verification and validation

4 proprietary turbines of 0.5-1.0 MWe each

2.5 MWe, 2,000 households



The market for tidal and wave energy is growing fast, creating worldwide demand for facilities where suppliers can test, certify, validate and demonstrate their innovative systems in a live tidal maritime environment. Being part of the Delta Works, the ‘Flakkeese Spuisluis’ tidal sluice at Grevelingendam is an ideal location for a test and demonstration facility in tidal energy. Tidal Technology Center Grevelingendam is planned to come into operation in 2019 and will provide the necessary platform for the further development of the tidal energy industry.

Research platform

TTC-GD will feature three test channels in which turbines, mills and their components can be tested, certified and demonstrated. The setup is ideal for monitoring the impact of tidal energy facilities on morphology, on tidal flow patterns, environmental impact and a host of other variables. TTC-GD will further purchase and operate four demonstration turbines. These turbines will also be available to research institutes and universities for independent research.

Power output

When not in use by clients, the channels at TTC-GD will be fitted with four 0.5 to 1 MWe turbines to demonstrate tidal energy technologies and generate electricity for people in the region. The demonstration turbines should generate electricity for 2,000 households.

Showcasing platform

Being readily accessible from land, TTC-GD will provide easy and cost-effective access to both the facility and the installed turbines. As an ‘on-shore’ marine test facility, it will eliminate the requirement for high-cost offshore installation and the associated operational, vessel and other costs. This makes TTC-GD the perfect low-cost test and demonstration facility, positioned between small-scale tank tests and large-scale offshore demonstrators and arrays.


TTC-GD will include facilities for research, monitoring and data logging. We are working with various certification and standardisation institutions to become a fully equipped certification centre.


The Flakkeese Spuisluis last year was completely renovated by Rijkswaterstaat, part of the Dutch Ministry of Infrastructure and the Environment, after which TTC-GD is expected to be completed, in 2019.

Storage systems for on-demand electricity: ‘Energy on demand’

In a second phase, TTC-GD will be equipped to demonstrate the potential of power storage systems for stable and reliable on-demand output strategies. Technology systems will include water-buffering, flywheel technologies and battery systems, plus we will work with Power2Gas systems in the area. This mitigated power storage solution has been dubbed ‘Energy on Demand’.

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work in progress

Photo’s © Dirk-Jan Gjeltema

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