Borssele Beta platform topside ready for sail out

20.03.2020

In the Borssele offshore wind farm area in the south-western part of the Dutch North Sea, Borssele Alpha, the first and largest connection system for wind farms from the Dutch-German transmission system operator (TSO) TenneT in Dutch territorial waters, is already in operation. Now the TSCNET shareholder is in the process of installing Borssele Beta to connect further wind farms, in this case Borssele III and IV that are still under construction. The topside of the offshore transformer platform for Borssele Beta is now ready for shipping. It was built at the construction yard of the offshore platform specialist HSM Offshore in Schiedam in the Rotterdam-The Hague metropolitan area and will be put to sea on 22 March 2020.

When the pontoon carrying the 3,650-tonne superstructure arrives at its destination, a crane vessel will place the top side on the platform substructure (jacket). The top side comprises three interior levels and an outer deck. It is 25 metres high, 58 metres long and 32 metres wide. The Borssele Beta grid connection will have a capacity of 700MW and is scheduled to be commissioned on 1 September 2020. The Borssele III, IV, and V wind farms, which are located about 22km from the coast, will be connected to this transmission system. Borssele V by the Two Towers consortium has been designated as an innovation site within the wind farm zone and will be connected to Borssele Beta. The electricity generated by these offshore wind farms will then be transported ashore via two 67-kilometre-long cables to the high-voltage transformer station near the town of Borssele in the Dutch province of Zeeland.

Marco Kuijpers, Director Offshore Projects a TenneT, comments on the TSO’s progress in offshore expansion: “With this platform, the offshore grid that TenneT is building in the Dutch North Sea is definitively taking shape. Borssele Beta is the second offshore grid connection built by TenneT. Over the coming eight years we will build a new offshore connection every year. I am proud that we are able to make such a significant contribution to the energy transition in which offshore wind energy plays a crucial role.”

TenneT also assumes a marine ecological responsibility and makes its offshore platforms available for other uses. The TSO cooperates in this respect with the Dutch Directorate-General for Public Works and Water Management (Rijkswaterstaat). The Borssele Beta offshore platform therefore also features a Maritime Information Provision Service Point (MIVSP). This is a monitoring station with various monitoring systems, such as nautical radars, meteorological systems and ecological monitoring systems. Similar stations are being installed on every TenneT offshore transformer platform.

The topside of the offshore transformer platform Borssele Beta of TenneT is constructed and ready for shipping (picture: HSM Offshore)

Linkup
> See TenneT press release (html)

See article on single page

Investing in green energy

23.05.2018

The expansion of the transmission infrastructure for the integration of renewable energies is a cardinal obligation for transmission system operators (TSO) in the 21st century. As far as TSCNET shareholder TenneT is concerned, the ongoing efforts of the Dutch-German TSO to promote sustainable energy sources are not limited to the physical implementation of infrastructure projects. TenneT is also active on the financial market as the largest corporate issuer of Green Debt in the Netherlands.

Now, the TSO has again successfully issued €1.25bn of long term Green Bonds on the Dutch market in two tranches of €500m and €750m respectively. This adds up to €6.25bn of green issuances since TenneT established its green financing framework in 2015. Over the next 10 years, TenneT’s investments in Dutch and German offshore and onshore grid connections are expected to total €28bn. With the inclusion of the Dutch offshore projects Borssele Alpha and Borssele Beta, eleven projects are currently part of the Green Project Portfolio and financed through TenneT’s Green Bonds.

> See TenneT press release (html)

See article on single page

Contract and “First steel cut” for Borssele

05.09.2017

The grid connection of the Borssele offshore wind area in the Dutch part of the North Sea is the first large-scale connection project realised under the Dutch National Energy Agreement for offshore wind farms. In February, TSC member TenneT, the Dutch-German transmission system operator (TSO), had already awarded the contract for the construction of the Borssele Alpha offshore transformer station to HSM Offshore. Now, TenneT contracted HSM Offshore also for the construction of the Borssele Beta platform.

The two platforms together provide 700MW of connection capacity and thus form the key component of the Borssele grid connection. The signing of the Beta contract was accompanied by the “First steel cut” ceremony for the Alpha platform at the HSM shipyard in Schiedam in the Dutch province of South Holland. Both contracts cover the engineering, construction, transport, installation, connection and testing of the respective offshore transformer stations. The Alpha platform is expected to be put into operation in 2019, and Beta in 2020.

> See TenneT press release (html)

Picture: TenneT

.

See article on single page