The Aperlena Verdict
Open raceNo supplier dominates: 8 different companies have won the last 8 comparable contracts from this buyer over 5 years. This is a genuinely open race.
Based on 8 comparable awards by this buyer in this sector over 5 years. Every verdict is recorded before the outcome and graded against the award notice. How we score ourselves.
Summary
Machine-generated summaryThe City of Duisburg is procuring an annual contract for the maintenance of wastewater sewers across the entire city area using the Janssen injection method, a trenchless technique carried out in closed construction mode. The contract runs from 1 January 2027 to 31 December 2027. The contracting authority reserves a unilateral option to extend the contract by one further year, until 31 December 2028. The service covers sewer maintenance without open excavation throughout Duisburg. A detailed description of the services to be performed is set out in the tender documents. The contract covers the whole city area rather than individual districts.
Description
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Can I bid?
- Open procedure: any interested supplier may submit a bid.
- The notice is written in German.
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Official source
Source: Vergabemarktplatz NRW (open data satellites)
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Last verified against Vergabemarktplatz NRW (open data satellites) 9 hours ago
What this buyer has paid before
Based on 7 comparable contracts this buyer awarded in this sector over the last 4 years.
- Median award
- €4.1M
- Middle half of past awards
- €978,791 to €7.4M
Vergabemarktplatz NRW (open data satellites) publishes no value for this notice, so it has no mark on the scale. The official documents may state one.
Most recent awards
- Sewer construction works - 2025-0692 Sewer construction works - Annual contract 2026 civil engineering sewer maintenance from 01.01.2026 to 31.12.2026 in the entire city area of Duisburg including optional period for the year 2027 €4
- Elektrotechnikinstallation - 2025-0374 Kanalerneuerung in der Dieselstr. 2. BA in Duisburg- Hamborn €10,359,878
- Bauleistungen im Hochbau - 2024-0566 Erweiterung Betriebshof Hochfeld, 2. Bauabschnitt: Los 180 "Verwaltungsgebäude" unterteilt in 5 Titel nach BIM-Methodik €8,507,255
- Tiefbauarbeiten, außer Tunneln, Schächten und Unterführungen - 2024-0584 Erweiterung Betriebshof Hochfeld, 2. Bauabschnitt: Los 145 "Verkehrsflächen inkl. Kanalbau und Baureifmachung" unterteilt in 15 Titel nach BIM-Methodik €6,298,051
- Bauleistungen im Hochbau - 2024-0516 Erweiterung Betriebshof Hochfeld, 2. Bauabschnitt: Los 170 (Winterdienstgebäude inkl. Überdachung) €1,768,247
Award values as published by the official sources. Use them as a guide, not a rule: scope, lots and duration differ between contracts.
The buyer
Full buyer profileWirtschaftsbetriebe Duisburg - AöR
- notices in the register
- 145
- awards
- 50
- awarded in total
- €34.6M
Who wins its contracts
Many suppliers- different companies won its awards
- 44
- of the awards went to the three most frequent winners
- 13%
- of its calls state an estimated value
- 9%
Based on 47 awards with a named winner over the last 3 years. Counted by award, not by value, because lot and framework amounts are not comparable. Concentrated means the three most frequent winners took 65% or more of the awards; many suppliers, under 35% with at least ten different winners.
Competition
- tenders per lot on average (open and restricted procedures)
- 3.8
- of those lots received a single tender
- 15%
- of the awards went to companies based in another country
- 0%
As the official award notices state them, over the last 3 years. Tenders per lot count open and restricted procedures only: in a negotiated procedure or a direct award a single tender is the procedure itself. The country is the one the notice gives for the winner.
Who usually wins this buyer's contracts in this sector
| Company | Wins | Total awarded | Last win |
|---|---|---|---|
| Kramer Bauunternehmung GmbH + Co KG | 1 | €10.4M | Sep 2025 |
| OMC Generalbau GmbH | 1 | €8.5M | Sep 2025 |
| STRABAG AG, Direktion Nordrhein - Westfalen, Bereich Ruhrgebiet | 1 | €6.3M | Jul 2025 |
| Huber Parking Deutschland GmbH | 1 | €4.1M | Jul 2025 |
| Holten GmbH & Co.KG | 1 | €1.8M | Jul 2025 |
Based on 8 awards with a linked company profile over the last 5 years.
10 open tenders right now
- Services relating to municipal and other waste - 2026-0581: Take-over, sorting and recycling of similar non-packaging waste 'sNVP' (AVV 150106) 9 days left
- 2026-0617 Treatment and recovery of grit screening residues (AVV 190802) from the wastewater treatment plants of Wirtschaftsbetriebe Duisburg - AöR 13 days left
- 2026-0606 Sewer renovation - repair works on 4 streets by Kate robot rehabilitation in Duisburg-Süd 15 days left
Market context
Vergabemarktplatz NRW (open data satellites) publishes no value for this notice, so it cannot be placed among the open notices of its sector. The official documents may state one.
- open now in Construction work
- 19,844
- median open notice
- €564,179
Who wins in this market
Many suppliersGermany · Construction work
- different companies won awards here
- 12,376
- of the awards went to the three most frequent winners
- 1%
- buyers awarded contracts here
- 2,996
Based on 27,336 awards with a named winner over the last 3 years. Counted by award, not by value, because lot and framework amounts are not comparable. Concentrated means the three most frequent winners took 65% or more of the awards; many suppliers, under 35% with at least ten different winners.
Competition
- tenders per lot on average (open and restricted procedures)
- 6.3
- of those lots received a single tender
- 7%
- of the awards went to companies based in another country
- 1%
- of the tenders came from another country
- 1%
As the official award notices state them, over the last 3 years. Tenders per lot count open and restricted procedures only: in a negotiated procedure or a direct award a single tender is the procedure itself. The country is the one the notice gives for the winner.
Similar tenders
Open now
1
day left
€280,000
est. value
Awarded before
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