Stadtwerk Winterthur: tenders, sectors & how to win their contracts

Stadtwerk Winterthur has published 27 tenders in Switzerland.

2 are open for bids as of 14 November 2026.

Its buying spans 3 CPV divisions, most often construction work.

Across 23 awarded contracts the median value is CHF351.9k.

Its published awards total CHF27.9m.

Open Tenders

(2)

Stadtwerk Winterthur

<p>Stahlbau inkl. Brandschutz für Erweiterung Fernheizwerk</p>

Switzerland

Not disclosed

29 days remaining

45223210

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Stadtwerk Winterthur

<p>Fassaden-Sandwichelementen für die Gebäudeerstellung für die Einhausung des Notheizkessels</p>

Switzerland

Not disclosed

29 days remaining

45223800

View Details

Measured from Stadtwerk Winterthur's own published record — no estimates, no generic advice.

Plan for about 32 days to prepare a bid — that is the median gap between publication and deadline across 5 of their tenders.
They publish about 0.9 tenders a month, measured over 6 months of history.
Half of their 23 awarded contracts are worth CHF351.9k or less — size your bid to that range.
Most of their buying falls in construction work, electrical machinery, apparatus, equipment and consumables; lighting, architectural, construction, engineering and inspection services.
Their most frequent suppliers are Alder-Zani AG Winterthur (3), Siemens Schweiz AG (2), F. Preisig AG, Bauingenieure und Planer, Zweigniederlassung Winterthur (2) — expect to bid against incumbents who already know this buyer.

Tender	Winner	Tender closed	Contract Value
Planerleistungen im Bereich Tief- und Rohrleitungsbau für de...	Fehr Ingenieure AG	12 July 2026	CHF1m
Rohrleitungsbauarbeiten EC Banane	Hugo Leutenegger AG	-	CHF313.9k
Tiefbauarbeiten EC Anschluss Banane (Schaffhauserstrasse 6)	Alder-Zani AG Winterthur	-	CHF590k
Mobile Notstromgruppe 250 kVA auf Anhänger	Avesco AG	-	CHF177.8k
2 + 2 Stück 110/(22)11kV Transformatoren für das UW Grüze	Starkstrom Gerätebau GmbH	-	CHF4.2m
Submission für Werkleitungsarbeiten	Alder-Zani AG Winterthur	-	CHF134.4k

Supplier	Contracts	Total Value
Alder-Zani AG Winterthur	3	CHF1.1m
Siemens Schweiz AG	2	CHF4.5m
F. Preisig AG, Bauingenieure und Planer, Zweigniederlassung Winterthur	2	CHF4m
Frei Bauunternehmung AG	2	CHF414.1k