Video of successful decommissioning slip joint connection
19 September 2019
Find out more about the SJOR project and the slip joint connection
Growth through Research, development & demonstration in Offshore Wind
Growth through Research, development & demonstration in Offshore Wind
19 September 2019
Find out more about the SJOR project and the slip joint connection
16 August 2019
With the removal of the DOT wind turbine all phases of this concept’s lifetime are investigated and successfully put to the test.
Friday morning the 16th of August 2019 the wind turbine, outfitted with a Slip Joint connection, was successfully removed from its monopile foundation.
The DOT wind turbine was located in Eneco’s Princes Amalia Wind Park off the coast of IJmuiden, the Netherlands. The complete wind turbine was picked up in a single lift from its monopile foundation to be transported towards and backloaded on the quay of Sif Rotterdam for further onshore decommissioning. Same as during the installation, the offshore removal of the wind turbine was executed by Heerema’s DCV Aegir being operated on its Dynamic Positioning System. This way of working in combination with the use of a slip joint connection is noticeably faster than current industry practice.
With the removal of the wind turbine all necessary data regarding the Slip Joint connection is successfully gathered and is now being processed and used for validating by the project partners.
Find out more about the project and the slip joint connection
13 June 2019
Did you visit our side event on foundation innovation at the WindDays and do you want to have an other look at the presentations? Or were you not in the possibility to attend and want to know more about foundation innovation?
12 June 2019, 11.15 – 12.45, WTC Beursplein 37, Rotterdam, Leeuwen Room II
Interested in the developments in offshore wind foundations?
During this side-event, GROW presents several new developments in the field of offshore foundations. David the Jager, director of GROW, will lead you through the program. The first (intermediate) results of three GROW projects will be presented;
The presentations will be followed by a discussion.
Find out more about the presentations
Interested?
Let us know that you want to visit the GROW side-event by registering here.
Please note: You also need to purchase a WindDays Exhibition ticket to enter the GROW side-event. You can buy ticket to the WindDays exhibition here.
22 March 2019
In the coming years, offshore wind energy in the Netherlands will get a big boost. By 2030, the total installed offshore wind capacity is planned to be 11.5 GW. Where a few years ago, offshore wind was seen by the general public as the most expensive climate solution, it has now become one that needs almost no financial support from the Government. Technological and non-technological innovation have contributed significantly in bringing the cost of offshore wind energy down. With offshore wind being more competitive, do we still need to invest in innovations in this area? The answer is YES!
Wind Energy Magazine spoke to David de Jager, director of GROW, a consortium of about 20 players in the Dutch offshore wind energy industry that work towards bringing down the cost of offshore wind and increasing the role in the energy system by exchanging knowledge and intensive cooperation.
You can find the complete interview with David de Jager here.
30 September 2018
SJOR project tests innovative connection offshore: ready-to-use installation within an hour.
This morning the DOT wind turbine was successfully installed on its previously installed monopile using a Slip Joint connection. The Slip Joint is an alternative connection between an offshore wind turbine and its foundation. It works and looks like two paper cups upside down stacked on top of each other. The connection is based on friction, where the weight ensures a firm and stable connection. Installation is done by simply sliding the wind turbine over the monopile without the use of grout or bolts. This simple mechanism allows for cost reduction in material, equipment & personnel as well as allowing for a shorter installation time. It is the first time a slip-joint connection is deployed offshore.
The DOT wind turbine is located in Eneco’s Princes Amalia Wind Park off the coast of IJmuiden, the Netherlands. The complete wind turbine was picked up in a single lift by Heerema’s DCV Aegir from the quay of Sif Rotterdam and transported towards its designated location. The installation of the wind turbine took within an hour in total, which is noticeably faster than usual installation. Jan van der Tempel, Director of DOT BV: “This offshore installation is a major milestone in the commercialisation of the Slip Joint.” The wind turbine will stay offshore for a year to test and collect data regarding this innovative connection after which the gathered data will be processed and used for validating lab tests by both TU Delft and TNO.
22 March 2019
Offshore wind energy is a key technology in the transition of our energy system towards sustainability. This is demonstrated by its dominant position in several energy agreements and reports on the energy transition. Also the draft Climate Agreement is heading in that direction. GROW, the consortium of leading Dutch offshore wind industry and research partners, is working hard on the required innovations to fulfil this important role. The Ministry of Economic Affairs and Climate Policy fully supports GROW. “The Dutch offshore wind sector represented in GROW is leading the way.” said Sandor Gaastra, Director General Climate & Energy at the Ministry of Economic Affairs and Climate Policy. “That is why my ministry signed a collaboration agreement with GROW. With this agreement we will further strengthen the position of offshore wind energy and of the Dutch wind sector.”
GROW is contributing to the energy transition by working on the societal task of making the energy supply more sustainable. It carries out a coherent program of Research, Development & Demonstration (RD&D), ranging from more fundamental research to the demonstration or rollout of offshore wind energy innovations. Research questions within the program include: How can the wind turbine installation process be improved further, at lower costs? How can the environmental impact of noise, for example, be limited or even be prevented? How can maintenance activities be carried out as effectively and efficiently as possible?
Sandor Gaastra: “Due to the intensive cooperation and knowledge sharing within GROW, with parties representing the entire offshore wind value chain, successful innovations can be realised relatively fast. GROW is therefore an interesting discussion partner for us and we are happy to formalise this cooperation.”
Chairman of GROW Peter Terium: “To achieve the energy and climate goals, the government, industry, knowledge institutions and civil society organizations must work together even more. That starts with innovation. This agreement helps us to keep up the pace of innovation. "
15 May 2018
As of today David de Jager succeeded Ernst van Zuijlen as Director of GROW. After being responsible for the programming of RD&D on offshore wind energy for about ten years (as Director of FLOW, TKI Wind op Zee, and GROW) Ernst will pitch into both product- and project development in the same area.
David de Jager comes from consultancy firm Ecofys and has almost 30 years of experience in renewable energy, notably on the interaction of technology development, policy design, and finance. Over the past decade he acted as Operating Agent for the IEA-RETD, an international research program of the International Energy Agency.
The GROW consortium was officially launched at the WindDays 2016 conference held in Rotterdam, the Netherlands. This consortium of leading Dutch companies and knowledge institutes involved in the offshore wind industry has created an innovation programme that aims to reduce the costs of offshore wind energy.
