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PlannedServicesEuropean

EU 50x Consultation - System maintenance for offshore grid connection systems

TenneT TSO B.V. · 1 lots · 425784
Type
Services
50000000 · Repair and maintenance
Estimated value
Not published
To deadline
Ongoing
Knock-outs
0
exclusion grounds
Award basis
Best price-quality ratio
Assess manuallyconfidence high

This market consultation serves to collect input for a future European tender for the maintenance of offshore and onshore grid connection systems. TenneT is investigating market capacity for both current 700 MW assets and the future expansion to 2 GW systems.

Services · European procedure

European
Contracting authority
TenneT TSO B.V.
NL
Contract type
Services
Estimated value
Estimate not published
Submission deadline
Ongoing
Scope
European
European procedure
Lots
1
1 lots
Main CPV code
50000000
Repair and maintenance services
Location
Niet vermeld, NL
CharacteristicsCPV 50ServicesEU tenderTenneTHVDCmaintenance

01What is being requested

Market consultation for the maintenance and repair of offshore Grid Connection Systems and associated onshore DC land stations. The scope includes both existing 700 MW AC assets and future 2 GW DC systems, with an intended contract duration of up to eight years from Q1 2028.

TenneT intends to launch a European tender for the maintenance and repair of its offshore converter stations and associated onshore DC land stations. This combined asset scope is hereinafter referred to as “System Maintenance.” The assets within scope are primarily located in the Dutch North Sea and onshore in the Netherlands and comprise a critical part of the national and offshore transmission system. Prior to initiating the tender procedure, TenneT wishes to hold a market consultation to facilitate a structured exchange of information with interested market parties regarding the proposed se

50000000Services
1EU 50x Consultation - System maintenance for offshore grid connection systems€1

02Strategic insight

“
Strategic insight · AI analysis
Position the organization as a long-term partner that not only provides maintenance but also contributes to knowledge transfer and the building of in-house capabilities at TenneT. Explicitly demonstrate capacity and scalability to support the transition from 700 MW to 2 GW systems. Focus on the specific discipline-based lots where the organization's expertise aligns best.
Read automatically from the tender documents using AI. Always verify against the original documents.

03Points of attention

Important · 5
Phasing: The initial scope focuses on the existing 700 MW offshore platforms and interconnectors.Important
Partnership: Parties are sought who are willing to act as a partner for the expansion to the 2 GW offshore scope.Important
Lot structure: The tender strategy is based on discipline-based framework agreements (lots).Important
Mini-competitions: For non-recurring activities (CAPEX nature) above a certain threshold (e.g., > EUR 100,000), a mini-competition mechanism is applied.Important
Cybersecurity: Attention is paid to cybersecurity maturity during the maintenance of offshore converter stations.Important

04Can I take part?

Technical — Knowledge of OEM installations (e.g., SCADA, fire fighting) as main contractor or subcontractor.
Professional capability — Certifications such as ISO 9001, ISO 14001, ISO 45001, ISO 27001 or Safety Culture Ladder (SCL).

05Exclusion grounds

Exclusion grounds — consult the ESPD
  • No specific exclusion grounds were extracted. In a European tender, the mandatory and discretionary grounds of art. 2.86/2.87 of the Dutch Procurement Act almost always apply — check the European Single Procurement Document (ESPD).

06Value in context

Estimate not published

The contracting authority did not publish an estimated value — common for a large share of contracts. The EU threshold for diensten is € 221.000, for reference.

07Likely competitors

#Likely bidderFitWins
1Unica Installatietechniek B.V.SME9424×
2Croonwolter&dros B.V.SME9118×
3Kropman Installatietechniek B.V.SME9017×
4Heijmans Utiliteit B.V.SME9019×
5ENGIE Services Zuid B.V.SME8812×
6Veolia Gebouwenbeheer B.V.SME8615×

08Tender documents

Introduction & General provisions.pdfpdfMay 20, 2026 · 47 KB
Description.pdfpdfMay 20, 2026 · 41 KB
Situation & scope description.pdfpdfMay 20, 2026 · 38 KB
Award phase.pdfpdfMay 20, 2026 · 35 KB
260512 Company information_T209726.pdfpdfMay 20, 2026 · 214 KB
Consultation Questions .pdfpdfMay 20, 2026 · 60 KB
260512 Company information_T209726.docxdocxMay 20, 2026 · 88 KB
260518 Market Consultation-System maintenance for offshore grid connection systems.pdfpdfMay 20, 2026 · 503 KB

09Legal themes that may be relevant here

10Frequently asked questions

What is the scope of work for 'System Maintenance'?
The work includes the maintenance and repair of offshore converter stations and the associated onshore DC land stations.
What is the intended duration of the contracts?
The contracts have an intended duration of up to eight years, with a start date from the first quarter of 2028.
Which assets are expected within the 2GW program?
The program includes seven 700 MW AC Grid Connection Systems (GCS), two DC interconnectors, and eight 2 GW DC Grid Connection Systems to be delivered between 2029 and 2033.
Which certifications and standards are relevant to this consultation?
Relevant standards include ISO 9001, ISO 14001, ISO 45001, ISO 27001, and the Safety Culture Ladder (SCL).
How does participation in the market consultation take place?
The market consultation takes place digitally via the Mercell platform.

Automatically compiled from the official tender data and documents.

11Estimated value versus the market

p25
€ 350K
median
€ 1,0 mln
p75
€ 3,3 mln
deze opdracht

Gegunde waarden in CPV 50 · diensten n=1189