- Permitted capacity
- 166 kt/a
- Incineration lines
- 2
- Commissioned
- 1976
- Energy recovery
- CHP
Satom SA operates the Waste-to-Energy plant in Monthey. This plant has treated waste from municipalities in the Valais and Vaud Chablais and Riviera regions since 1976. Besides electricity, the plant supplies the Thermoréseau district heating network. Furthermore, via the 2.5 km Ecotube pipeline opened in 2022, it supplies steam to the CIMO chemical site in Monthey. In 2025 it recovered 166,009 t of waste and generated 98 GWh of electricity. A new line (INOSAT, about CHF 300 million) is planned for 2030–2031.
| Hourly capacity | WtE Monitor+Available with WtE Monitor+ |
|---|---|
| Waste calorific value | WtE Monitor+Available with WtE Monitor+ |
| Feedstock | municipal solid waste, similar commercial waste, sewage sludge, certain liquid wastes (non-flammable used oils), medical waste, certain special wastes |
| Accepted waste types (EWC codes) | WtE Monitor+Available with WtE Monitor+ |
| Electricity generated | WtE Monitor+Available with WtE Monitor+ |
| Heat delivered | WtE Monitor+Available with WtE Monitor+ |
| District heat use | WtE Monitor+Available with WtE Monitor+ |
| Ownership | WtE Monitor+Available with WtE Monitor+ |
| Commissioning by line | 1976 (plant start-up); 1997 (Line 3); Line 1: year not published |
| Modernisation / expansion | WtE Monitor+Available with WtE Monitor+ |
| Projects in progress | INOSAT: new grate line L2 (15 t/h, 56 MW gross thermal; 3-field ESP, 4-stage wet scrubber, SCR) replacing Line 3, about CHF 300 million, commissioning planned 2030–2031 (tender June 2026); LAVACID fly ash acid washing and water treatment (construction since 2025, operation 2026); district heating link to Aigle and the AERA sewage plant (construction 2025–2026) |
| Address | Route de Boeuferrant-Nord 16, 1870 Monthey |
Location
Open in Google Maps · 46.2781, 6.9599
Nearby plants
- Sion35 km
- Lausanne37 km
- Hauterive (FR)56 km
- Aire-la-Ville72 km
Sources
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