Heat pump plant for wastewater recovery of the STEP d'Aïre - Hydraulics Lot 3.1

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Location: Canton GE
Procuring office: Services industriels de Genève (SIG) - Direction Achats
Requesting office: Services industriels de Genève (SIG) - Direction Thermique, Gaz et Eau (TGE)

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Awarded

According to the simap publication. Values that are not given are deliberately missing here.

Awarded to

As published on simap.ch: winner and price (with or without VAT, as stated).

Award of 11.05.20264 bids
- G.E.R. SA, MeyrinCHF 6’155’179.09 without VAT

Awards of this contracting authority

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Requirements
Conditions
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What is being procured?

Scope of work

Dans le cadre du projet PAC STEP Aïre, le lot hydraulique consiste en la fabrication, la fourniture et le

montage des conduites et équipements hydrauliques de la Centrale PAC (Bâtiment PAC + STAP + liaisons

entre les bâtiments), ainsi que les prestations annexes, décrits dans le présent cahier des charges.

Cet appel d’offre concerne toute la partie hydraulique du process comprenant plusieurs types d’équipements

avec des pressions et diamètres nominaux différents. A noter que cet appel d’offre ne concerne que les

équipements hydrauliques pour deux lignes de PAC et les ‘’pré-équipements’’ pour la 3ème ligne de PAC qui

sera installée ultérieurement (hors cadre du présent AO, cf chapitre 3.3).

Key facts, codes and options

Type of contract: Construction and installation
Type of construction: Building construction
Construction service: Execution
Procedure: Open procedure
Trades: NPK 414 – Pipes and control fittings for district heating and cooling
CPV: CPV 45300000 – Building installation work
Options: Not evident from the available publication data.
Variants: Not evident from the available publication data.
Partial offers: Not evident from the available publication data.

TEXFY assessment: Products, installations, quantities, technical specifications and exclusions are not structured fields of the publication. TEXFY does not analyse the free text on them: check the original text and the tender documents.

Market data for this service

From awards published on simap.ch, without rankings and without rating companies.

Comparable awards

Wastewater treatment plants, canton of Geneva, last 12 months

14 awards, bids (median): 3.5.

Awards: Wastewater treatment plants

Range of award prices

Wastewater treatment plants, all of Switzerland, last 12 months

CHF 208’19110 % of the prices were lower

CHF 672’693Median: half were lower

CHF 5’663’63510 % of the prices were higher

8 out of 10 award prices were between CHF 208’191 and CHF 5’663’635.

From 179 published award prices in CHF from 13.11.2025 to 05.11.2026, with or without VAT, as published. A single contract can differ widely.

Official source

Go to the official tender

simap project number: 28112
Publication number: 28112-04
Covered by international agreements: Yes

Checked against simap: 11.11.2026, 08:08

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