Helwin2 ot upgrade hw2-otup - hmi auxiliary systems hmi-aux - 9725295

The TenneT Offshore 9 Beteiligungsgesellschaft mbH in Germany from Europe region had released this tender for Helwin2 ot upgrade hw2-otup - hmi auxiliary systems hmi-aux HelWin2 is TenneT s third grid connection system in the eastern North Sea and was implemented using direct current transmission technology The line runs from the HelWin beta HWBE converter platform eighty-five kilometers as a submarine cable to the landing point in B sum and from there forty-five kilometers as an underground cable to the B ttel Konverter Drei BUKD converter station in B ttel in Schleswig-Holstein The offshore converter platform HWBE is a subsidiary platform of HelWin alpha HWAL the heart of the HelWin1 grid connection system There are only around twenty meters between the two platforms The two platforms are directly connected to each other via a bridge This means that the helicopter deck and crew quarters can be shared at sea This is an innovative and cost-saving concept as it uses technical and logistical synergies In order to enable the primary process of high-voltage direct current transmission various auxiliary systems AUX systems for short are required on the platform The auxiliary systems include among others the Power Management System PMS to provide the platform s own electrical requirements the sea and fresh cooling water system to cool various equipment air conditioning and ventilation Heating Ventilation and Air Condition HV AC as well as the fire alarm and extinguishing system The subject of the tender is the renewal mainly programming of the operational technology OT on the offshore converter platform HelWin beta and relates to the renewal of the automation of the ancillary systems mentioned above Further detailed information about the services to be provided can be found in the specifications To protect the confidentiality of the information provided by the client in the tender documents a confidentiality agreement must be concluded To do this please use the document Annex 13_NDA non-disclosure agreement which is available for download and send the signed copy to the following email address holger duba tennet eu Applicants may submit signed confidentiality agreements to the client at any time during the competition After a plausibility check the public contracting authority grants the applicant access to the tender documents by sending him an invitation email generated from Mercell for the above-mentioned tender The applicant also needs access to the tendering platform https s2c mercell com which is available after free registration on the platform The applicant cannot derive from the invitation to participate in the competition that the public contracting authority has confirmed the applicant s suitability for further participation in the tendering process For this purpose the public contracting authority sends separate invitations to tender to the bidders admitted to the tender process after the deadline for submitting applications to participate has expired The application for participation must be submitted in good time but at the latest by the end of the deadline for the application for participation 11 10 2025 10 00 a m GMT 01 00 and must be received via the Mercell electronic tender platform Individual extensions of deadlines will not be granted Instructions for submitting applications to participate - Submitting the application for participation by post email or fax is not permitted Failure to comply with this requirement can lead to the exclusion of the application to participate - Information or documents that are not available in German or English must be accompanied by a certified translation of the originals - The awarding authority recognizes signatures for the tender in digital form e-signature or scan and without a stamp or in text form as sufficient in accordance with Section 126 b of the German Civil Code BGB - Please note all documents and information provided on Mercell as well as all information in the procedural instructions If you have technical difficulties please contact Mercell Mercell service desk support-nl mercell com Telephone 31 0 85-001 4593 Opening hours 9 00 a m - 5 00 p m CET with tender notice no. d4ff57b0-de3f-42f1-a1ed-421685e9b451 published on 13 Oct 2025. The tender expired on 10 Nov 2025. This tender is sourced from Vergabe and is eligible for suppliers interested in Substation equipment, Subsea control systems, Operation of electrical installations. Interested bidders can obtain further information including complete bid documents or ways to participate by registering on Tender Impulse and referencing via Tender Impulse ID 9725295.