SMI Smart Maintenance & Environment Technologies AG

SMI Smart Maintenance & Environment Technologies AG

Ruggell, Liechtenstein

SolarHydrogenBiogas
Profile last updated: June 13, 2026

About

SMI Smart Maintenance & Environment Technologies AG is a renewable energy company headquartered in Ruggell, Liechtenstein specializing in Solar, Hydrogen, Biogas.

SMI is a technology company that converts biological residues from agriculture, wastewater treatment plants and industry into green hydrogen, synthesis gas, peat substitutes, synthetic coal and biochar. It also plans and builds photovoltaic systems on industrial roofs and open spaces, aiming to reduce customers' energy costs. Its product range includes chemical-free industrial wastewater treatment systems that remove oils, acids, chemicals and heavy metals and enable high water recovery, as well as microfilter systems that operate without electricity or chemicals. Customers include energy suppliers, industrial companies, investment companies, cities and local authorities. The company states it has installed more than 3,000 systems worldwide with its partner companies.

Headquarters

Ruggell, Liechtenstein

Focus areas

green hydrogenbiocharsynthesis gasbiogas residuesphotovoltaic systemsindustrial wastewater treatmentchemical-free water treatmentmicrofilterenergy efficiencyenergy transition

Products & services

Business models

B2B

Value chain

DevelopmentEngineeringConstructionO&M

Locations

Headquarters

Industriering 14, 9491, Ruggell, Liechtenstein

Operating locations (1)

  • Unterlettenstrasse 14, Widnau, Switzerland

Credentials & affiliations

Awards

Seal of Excellence

European Commission2023

Partnerships

IGT-Mikrolink GmbH

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