Energy consulting in
Olten

Ingenieurbüro Christian Amoser Energie-Ing. NDS HTL

Since 1998 · 1–10 empl.

Ingenieurbüro Christian Amoser Energie-Ing. NDS HTL is an engineering consultancy focused on energy efficiency. Its services include energy consulting and planning, energy concepts, and energy performance documentation.

Bauphysik Schweiz GmbH

Since 2013 · 11–20 empl.

Bauphysik Schweiz GmbH is an engineering consultancy specialising in building physics and energy. Its services include advice and planning for thermal and moisture protection, building and room acoustics, energy efficiency and sustainability, as well as measurements, simulations and building assessments.

H-O OEGERLI MARKUS ARCHITEKTEN SIA AG

Since 2015 · 11–20 empl.

H-O OEGERLI MARKUS ARCHITEKTEN SIA AG is an architecture practice working on new buildings, conversions and renovations. It also provides energy consulting and is a certified GEAK expert and Minergie specialist partner.

fokus-e gmbh

Since 2021 · 11–20 empl.

fokus-e gmbh advises businesses, institutions and public authorities on energy and resource efficiency and decarbonisation. Its services include energy assessments, operational optimisation, district heating networks, wood-fired heating plants and feasibility studies for renewable heat generation.

eicher+pauli Olten AG

Since 2017 · 101–500 empl.·5.0(2)

eicher+pauli Olten AG provides services in building, energy and environmental engineering. Its work includes developing energy strategies and planning energy supply systems and building technology for buildings, sites and districts, from initial concepts through to operation.

ennovatis Schweiz AG

Since 2010 · 11–20 empl.·3.0(8)

ennovatis Schweiz AG provides services and products for energy management and the energy optimisation of buildings. Its activities include planning, installing and operating energy systems, as well as energy monitoring, metering and billing, building automation and energy systems engineering.

Schmutz + Partner Energietechnik AG

Since 2024 · 1–10 empl.

Schmutz + Partner Energietechnik AG provides engineering and planning services in energy and building technology. Its services include heating, climate-control and cooling-system planning, energy consulting and assessments, as well as building automation planning and condition analyses.

Brunner Engineering AG

Since 2015 · 11–20 empl.·5.0(1)

Brunner Engineering AG is a building-services engineering firm offering energy consulting, heating, ventilation and cooling services. Its work includes energy concepts, subsidy applications, heat pumps, district heating, and ventilation and cooling systems.

HKG Engineering AG Pratteln, Zweigniederlassung Olten

Since 2026 · 1–10 empl.

HKG Engineering AG Pratteln, Zweigniederlassung Olten is an engineering firm specialising in electrical engineering, building services and energy consulting. Its services include planning electrical systems, building automation and integrated project planning.

WENGET GmbH

Since 2026 · 1–10 empl.

WENGET GmbH plans, optimizes and rehabilitates building technology and building automation for properties in German-speaking Switzerland. The company offers, among other things, energy consulting, GA planning, operational optimization, as well as quality assurance and coordination of renovation projects.

Batimo AG Architekten SIA, Zweigniederlassung Olten

Since 2011 · 1–10 empl.

Wicki-Wyss GmbH

Since 2015 · 1–10 empl.