Independent Waste-to-Energy Journalism and Analysis

Free newsletter

WtE Monitor

Get WtE Monitor+
Home » Companies » Satom

Company profile · Switzerland

Satom

Satom

Headquarters: Monthey · Public / municipal · satomsa.ch · Figures for 2025 · Data verified 16.10.2026 ·

WtE plants
1
WtE capacity
166 kt/a
Waste treated
166 kt/a
Employees
124

Satom SA is the municipally owned Waste-to-Energy company of the Chablais and Riviera regions in the Swiss cantons of Vaud and Valais.

From its plant in Monthey it supplies electricity, the Thermoréseau district heating network and process steam to the CIMO chemical site, and it runs an anaerobic digestion and composting site in Villeneuve. The company is preparing Inosat, a roughly CHF 300 million replacement incineration line due in 2030–2031, and in June 2026 it spun its district heating business into a new subsidiary, SatoCAD SA.

Key Takeaways

  • Satom SA is a société anonyme founded in 1972 and owned by the municipalities of the Vaud and Valais Chablais and the Riviera, with the two cantons as minority shareholders. Shares are allocated pro rata to population.
  • The UVTD Monthey plant (166,000 t/a, two lines) has operated since 1976 and feeds the Thermoréseau district heating network in Monthey and Collombey-Muraz, the grid, and the CIMO chemical site via the 2.5 km Ecotube steam pipeline opened in 2022.
  • A turbine fire in November 2022 stopped the plant for 134 days and left it without power generation until a new steam turbine started on 20 February 2024.
  • Inosat, a new grate line replacing line 3 of 1997, went to tender in June 2026 at an estimated cost of about CHF 300 million, with commissioning planned for 2030–2031. The LAVACID fly ash washing plant is due to start in 2026.
  • District heating is being extended to Aigle and Saint-Maurice, and since June 2026 the networks are developed by the wholly owned subsidiary SatoCAD SA.
Key data
Founded1972
Figures for2025
Ownership WtE Monitor+Available with WtE Monitor+
Revenue WtE Monitor+Available with WtE Monitor+
Net result WtE Monitor+Available with WtE Monitor+
Electricity generated WtE Monitor+Available with WtE Monitor+
Heat delivered WtE Monitor+Available with WtE Monitor+
Other activitieswaste-to-energy (UVTD Monthey); district heating network Thermoréseau/SatoCAD (Monthey, Collombey-Muraz, Aigle); process steam to CIMO chemical site via Ecotube; anaerobic digestion, biomethane and composting (Villeneuve); GastroVert food-waste collection; regional recycling centre; bottom ash treatment and metal recovery
Subsidiaries and holdings WtE Monitor+Available with WtE Monitor+
Projects in progress WtE Monitor+Available with WtE Monitor+

Plants operated by Satom

1 plant in the WtE Monitor database, 166 kt/a in total.

WtE Monitor+

Continue with WtE Monitor+

This content is part of WtE Monitor+: every plant, company and country profile, in-depth analyses and Ask AI.

Subscribe

Sources

21 sources for this profile. The list is part of WtE Monitor+

Read More

AI search

Ask WtE Monitor

Answers come only from WtE Monitor articles and plant data, with sources. Ask in any language.

Your question is processed by Anthropic to generate the answer. Please do not enter personal data. Privacy policy

3 questions a month with a free subscription, unlimited with WtE Monitor+. Subscribe free · Get WtE Monitor+