Market Dialogue to initiate a dialogue with potential suppliers about the procurement and construction of the Svanemollen Cloudburst Tunnel, aiming to reduce damage and nuisance caused by cloudbursts in northern Copenhagen and southern Gladsaxe and Gentofte.
The project shall establish a drainage system consisting of approximately 10 km of tunnel to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipe
Information resulting from the dialogue will aid HOFOR/Novafos in the development of the procurement and contract specifications for the project.
This is a separate process from the upcoming tenders for the project. The potential supplier are not obliged to attend this dialogue if it plans to bid on the upcoming tenders. The dialogue can be held in Danish or English. Answers to the questions and application for attending the dialogue meetings must be submitted in EU-Supply not later than 19/05/2022; invitation to dialogue meetings will be on 06/06/2022; dialogue meetings with expected up to 4 potential suppliers will be held on 20th, 21-22-23/06/2022: 3 hours will be allocated for each meeting. Click here for downloading further information and questions for potential suppliers. Contact Hofor A/S, attn Marianne Bredesgaard, Copenhagen, tel +45 27953810, email mbrd@hofor.dk. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=227865-2022. 18/22.
Denmark-Copenhagen: Tunnelling works
2022/S 084-227865
Periodic indicative notice – utilities
This notice is a periodic indicative notice only
Legal Basis:
Directive 2014/25/EU
Section I: Contracting entity
I.3)Communication
Additional information can be obtained from the abovementioned address
I.6)Main activity
Other activity: Supply activities; water, gas, wastewater, heat, district cooling
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
II.1.5)Estimated total value
II.1.6)Information about lots
This contract is divided into lots: no
II.2)Description
II.2.2)Additional CPV code(s)
45221000 Construction work for bridges and tunnels, shafts and subways
45221200 Construction work for tunnels, shafts and subways
45221240 Construction work for tunnels
45221246 Undersea tunnel construction work
II.2.3)Place of performance
NUTS code: DK012 Københavns omegn
II.2.4)Description of the procurement:
This is a RFI - market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. This is a separate process from the upcoming tenders for the project. As a potential supplier you are not obliged to attend this dialogue if you plan to bid on the upcoming tenders.
The dialogue can be held in Danish or English. All material prepared by HOFOR/Novafos for the dialogue, will be in Danish or English.
To participate in this dialogue, you must download further information and questions for potential suppliers
The document provides you with information about the process of the market dialogue and enough information about the Svanemøllen Cloudburst Tunnel project to answer the questions. All documents can be downloadet in EU-Supply.
Answers to the questions and application for attending the dialogue meetings must be submitted in EU-Supply not later than 19th of May 2022.
II.2.14)Additional information
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers four to six potential suppliers will be selected for dialogue meetings. Potential suppliers will - if invited for a dialogue meeting – receive the invitation no later than 6th of June 2022.
If you will be invited for a dialogue, the meetings are expected to be held in week 25.
II.3)Estimated date of publication of contract notice:
28/04/2022
Section IV: Procedure
IV.1)Description
IV.1.8)Information about the Government Procurement Agreement (GPA)
The procurement is covered by the Government Procurement Agreement: yes
IV.2)Administrative information
Section VI: Complementary information
VI.3)Additional information:
The project is expected to be tendered in several lots.
VI.5)Date of dispatch of this notice:
26/04/2022
Additional information for the periodic indicative notice (PIN) on Market Dialogue to initiate a dialogue with potential suppliers about the procurement and construction of the Svanemollen Cloudburst Tunnel, aiming to reduce damage and nuisance caused by cloudbursts in northern Copenhagen and southern Gladsaxe and Gentofte.
The project will establish a drainage system consisting of approximately 10 km of tunnel to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipe.
Information resulting from the dialogue will aid HOFOR/Novafos in the development of the procurement and contract specifications for the project.
This is a separate process from the upcoming tenders for the project. The potential supplier will not be obliged to attend this dialogue if it plans to bid on the upcoming tenders. The dialogue can be held in Danish or English. Answers to the questions and application for attending the dialogue meetings must be submitted in EU-Supply not later than 19/05/2022; invitation to dialogue meetings will be on 06/06/2022; dialogue meetings with expected up to 4 potential suppliers will be held on 20th, 21-22-23/06/2022: 3 hours will be allocated for each meeting. Click here to enter EU-Supply meeting. Contact Hofor A/S, attn Marianne Bredesgaard, Copenhagen, tel +45 27953810, email mbrd@hofor.dk. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=245464-2022. 20/22.
Denmark-Copenhagen: Tunnelling works
2022/S 089-245464
Notice for changes or additional information
Legal Basis:
Directive 2014/25/EU
Section I: Contracting authority/entity
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
04/05/2022
VI.6)Original notice reference
Section VII: Changes
VII.1)Information to be changed or added
VII.1.2)Text to be corrected in the original notice
Section number: II.2.14
Lot No: 1
Place of text to be modified: II.2.14
Instead of:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
four to six potential suppliers will be selected for dialogue meetings.
Read:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
up to four (4) potential suppliers will be selected for dialogue meetings.
VII.2)Other additional information:
Denmark-Copenhagen: Tunnelling works
2022/S 089-245464
Notice for changes or additional information
Legal Basis:
Directive 2014/25/EU
Section I: Contracting authority/entity
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
04/05/2022
VI.6)Original notice reference
Section VII: Changes
VII.1)Information to be changed or added
VII.1.2)Text to be corrected in the original notice
Section number: II.2.14
Lot No: 1
Place of text to be modified: II.2.14
Instead of:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
four to six potential suppliers will be selected for dialogue meetings.
Read:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
up to four (4) potential suppliers will be selected for dialogue meetings.
VII.2)Other additional information:
Denmark-Copenhagen: Tunnelling works
2022/S 089-245464
Notice for changes or additional information
Legal Basis:
Directive 2014/25/EU
Section I: Contracting authority/entity
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
04/05/2022
VI.6)Original notice reference
Section VII: Changes
VII.1)Information to be changed or added
VII.1.2)Text to be corrected in the original notice
Section number: II.2.14
Lot No: 1
Place of text to be modified: II.2.14
Instead of:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
four to six potential suppliers will be selected for dialogue meetings.
Read:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
up to four (4) potential suppliers will be selected for dialogue meetings.
VII.2)Other additional information:
Denmark-Copenhagen: Tunnelling works
2022/S 089-245464
Notice for changes or additional information
Legal Basis:
Directive 2014/25/EU
Section I: Contracting authority/entity
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
04/05/2022
VI.6)Original notice reference
Section VII: Changes
VII.1)Information to be changed or added
VII.1.2)Text to be corrected in the original notice
Section number: II.2.14
Lot No: 1
Place of text to be modified: II.2.14
Instead of:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
four to six potential suppliers will be selected for dialogue meetings.
Read:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
up to four (4) potential suppliers will be selected for dialogue meetings.
VII.2)Other additional information:
Denmark-Copenhagen: Tunnelling works
2022/S 089-245464
Notice for changes or additional information
Legal Basis:
Directive 2014/25/EU
Section I: Contracting authority/entity
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Construction of Svanemøllen Cloudburst Tunnel. Market Dialogue - RFI
II.1.2)Main CPV code
45221247 Tunnelling works
II.1.3)Type of contract
Works
II.1.4)Short description:
Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S and HOFOR Spildevand København A/S (Novafos/HOFOR) shall establish a drainage system consisting of approximately 10 km of tunnel with dimensionen Ø1600-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in the Øresund north of Svanemøllebugten.
Before tendering out this work Novafos/HOFOR initiates this market dialogue about the procurement and construction of Svanemøllen Cloudburst Tunnel. Information resulting from the dialogue will aid Novafos/HOFOR in the development of the procurement and contract specifications for the project, ensuring these are tailored to reflect current market conditions.
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
04/05/2022
VI.6)Original notice reference
Section VII: Changes
VII.1)Information to be changed or added
VII.1.2)Text to be corrected in the original notice
Section number: II.2.14
Lot No: 1
Place of text to be modified: II.2.14
Instead of:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
four to six potential suppliers will be selected for dialogue meetings.
Read:
When Novafos/HOFOR have reviewed the application and answers from the potential suppliers
up to four (4) potential suppliers will be selected for dialogue meetings.
VII.2)Other additional information:
Information meeting (RFI) about the procurement and construction of Svanemøllen Cloudburst tunnel to be held at HOFOR A/S in Copenhagen or via Teams on Monday 22 April 2024 at 14:00 - 15:00. For further information and registration to attend the meeting, please contact by e-mail the project coordinator: Anne Mette Krøyer, email ankroy@hofor.dk. Dead-line for registration is Monday 8 April 2024. For bid/tender documents click here.
Referring to previous notices, Novafos Spildevand Gladsaxe A/S, Novafos Spildevand Gentofte A/S, Frederiksberg Spildevand A/S and HOFOR Spildevand København A/S shall establish a drainage system consisting of approximately 10 km of tunnel with dimensions Ø1800-4900 mm to transport cloudburst water from large areas in Gentofte, Gladsaxe and Copenhagen Municipality, and a further approx. 3 km of connecting pipes, the so-called connection projects. In the event of heavy rain or cloudbursts, the water is discharged from the tunnel through an outlet structure in Øresund north of Svanemøllebugten. Before tendering out this work the Client initiates this information meeting about the procurement and construction of Svanemøllen Cloudburst Tunnel.
Contact HOFOR Spildevand A/S, attn Marianne Bredesgaard, Copenhagen, tel +45 27953810, email mbrd@hofor.dk. Visit https://ted.europa.eu/en/notice/-/detail/161695-2024.Ref.n. 2525-01-05-004-03-01-01-SST04 an. 13/24.
SST04 – Cloudburst Tunnel & Structures Project (Denmark)
Tender Reference: https://ted.europa.eu/en/notice/-/detail/836460-2025
TED Notice: Prior Information Notice (PIN)
Notice Type: Prior Information Notice
Procedure: Restricted procedure
Contract Type: Works
CONTRACTING AUTHORITY
Client:
HOFOR Spildevand København A/S (lead)
Novafos Spildevand Gladsaxe A/S
Novafos Spildevand Gentofte A/S
Activity: Urban wastewater and stormwater management
Location: Copenhagen, Gentofte, Gladsaxe and Frederiksberg, Denmark
PROJECT DESCRIPTION
The SST04 Cloudburst Tunnel forms a central element of Greater Copenhagen’s long‑term climate adaptation strategy. The project will divert excess stormwater and combined sewer flows into a new deep tunnel system, reducing flood risk in densely populated districts during extreme rainfall events.
The scheme includes:
Diversion of surplus stormwater from four municipalities into a new cloudburst tunnel
Temporary underground storage when tunnel capacity allows
Pumping of stored water to the Lynetten wastewater treatment plant via a new discharge pipeline
Controlled emergency overflow to the Øresund via a new outfall at Fiskerihavnen/Skudehavnen during extreme events
The works will be executed predominantly in dense urban areas with limited space, heavy traffic and complex stakeholder interfaces.
CONTRACT DETAILS
Lot: Single works contract
Internal Reference: SST04 – Tunnel & Structures
Main CPV Code: 45221240 – Construction work for tunnels
Estimated Contract Value: approx. DKK 2.0 billion (≈ €270 million)
Estimated Start Date: To be confirmed with tender launch
Estimated Completion: To be confirmed
Maximum Renewals: 0
LOCATION
Cities: Copenhagen, Gentofte, Gladsaxe, Frederiksberg
Country: Denmark
PROCUREMENT INFORMATION
Legal Basis: EU Utilities Directive
EU Funding: Not EU‑funded
GPA Coverage: Yes
Framework Agreement: No
Dynamic Purchasing System: No
Electronic Auction: No
SME Suitability: No
Investment Screening:
The contract is classified as critical infrastructure.
Non‑EU/EFTA contractors or owners must obtain approval from the Danish Business Authority.
SELECTION CRITERIA (Mandatory and Weighted)
Financial Requirements:
• Minimum average annual turnover: DKK 4 billion (last 3 years)
• Minimum average solvency ratio: 25%
• Positive average profit margin (last 3 years)
Technical Requirements:
• Up to 10 reference projects covering 12 technical categories (A–F)
• References may be up to 10 years old due to limited comparable mega‑projects
Mandatory Competencies:
• Segmental tunnel construction (with design responsibility)
• Pipe jacking (with design responsibility)
• CSM‑regulated railway crossings (CSM‑RA compliant)
• Deep shafts using diaphragm walls or secant pile walls (≥1000 mm, ≥15 m depth)
• Complex utility diversions in high‑traffic corridors
• In‑situ concrete works for shafts and pumping stations
• Experience in comparable ground conditions
• Full lifecycle project management from award to handover
AWARD CRITERIA
(To be confirmed at tender launch; expected to include:)
• Technical quality
• Methodology and construction planning
• Organisation and key personnel
• Price
SUBMISSION DETAILS
Submission Method: Electronic (details to be provided in formal tender)
Submission Language: Expected to be Danish or English
Deadline for Receipt of Tenders: Early 2026 (exact date to follow)
Tender Validity: 9 months, with possible extensions linked to foreign subsidy or investment screening processes
Variants: To be confirmed
Multiple Tenders: To be confirmed
Financial Guarantees: To be defined in tender documents
REVIEW & APPEALS
Review procedures will follow Danish public procurement rules.
Details will be provided in the formal tender documentation.
CONTACTS
Contracting Authority:
HOFOR Spildevand København A/S
Copenhagen, Denmark
Additional Authorities:
Novafos Spildevand Gladsaxe A/S
Novafos Spildevand Gentofte A/S
Further information will be published with the full tender in early 2026.
