Energy consulting in the
Canton of Solothurn
52 companies in Energy consulting based in the Canton of Solothurn — name and year of registration from the commercial register.
50 of 52 companies
Aeschlimann Heizung/Klima GmbH
Since 2004 · 1–10 empl.5.0(21)
The core activity of Aeschlimann Heizung/Klima GmbH (AHK) is the planning, installation, maintenance and consulting of environmentally friendly heating systems, particularly pellet heating systems, log wood heating systems, heat pumps and other ecological heating solutions.
Späti Architektur AG
Since 2023 · 51–100 empl.4.5(26)
Späti Architektur AG provides architectural and planning services for new buildings and renovations. Its services include design, feasibility studies, construction management and coordination of the building process.
NBG Ingenieure AG
Since 1995 · 1–10 empl.
NBG Ingenieure AG plans building services for new construction and renovation projects and advises on energy and sustainability matters. Its services include HVAC and plumbing engineering, building automation, fire protection, building assessments, renovation concepts, tendering and specialist construction management.
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.
WiKo Wiedmer Elektro-Kontrollen GmbH
Since 2007 · 1–10 empl.
WiKo Wiedmer Elektro-Kontrollen GmbH is a specialist provider of safety inspections and testing for electrical installations. Its services also include inspections of photovoltaic systems and electrical equipment, energy consulting, and technical assessments of damage and faults.
Michel Ostertag GmbH
Since 2010 · 1–10 empl.
Michel Ostertag GmbH provides energy consultancy and planning for buildings, as well as building physics and building thermography services. Its work includes energy concepts, renovation analyses, photovoltaic planning, and assessments of heat and moisture protection.
QLTECH Gisler
Since 2011 · 1–10 empl.
QLTECH Gisler provides independent advice on district-heating contracts, technical matters, implications and costs. The business develops district-heating network projects, assesses the heat potential of areas and supports customers with the implementation of building connections.
Neue Energien May
Since 2012 · 1–10 empl.
Neue Energien May distributes products for photovoltaic systems and heat pumps and offers advice in these areas. It also installs heat pumps in cooperation with TCA Thermoclima.
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.
SGT Energie AG
Since 2021 · 11–20 empl.
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.
Studer Gebäudetechnik Holding AG
Since 2014 · 1–10 empl.5.0(5)
Studer Gebäudetechnik Holding AG is part of the SGT Gebäudetechnik group, whose planning offices design building services for new builds, renovations and conversions. The group covers heating, ventilation, cooling, plumbing and electrical systems, and also offers photovoltaics, energy consulting and project advisory services.
Enerhaus Engineering AG
Since 2011 · 11–20 empl.5.0(3)
Enerhaus Engineering AG is an engineering consultancy specialising in energy and building services, including HVAC and plumbing design and energy consulting. Its work includes planning building-services systems and energy solutions such as heat pumps and ventilation heat recovery.
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.
Energieservice Lanz
Since 2019 · 1–10 empl.
Energieservice Lanz is an independent energy consultancy specialising in energy efficiency, renewable energy and energy planning for buildings. Its services include GEAK and GEAK Plus assessments, advice on renewable heating systems, renovation support, funding assessments and energy compliance documentation.
Jaeggi-Enertech GmbH
Since 2019 · 1–10 empl.
Jaeggi-Enertech GmbH provides independent consulting and planning services for heating technology and building energy. Its services include advice on heating replacements and heat pumps, energy assessments, project planning and construction supervision, as well as operational optimisation for residential, agricultural, commercial and industrial buildings.
Solothurn Gebäudetechnik AG
Since 2020 · 11–20 empl.5.0(5)
Solothurn Gebäudetechnik AG plans and coordinates building services for new builds, renovations and conversions. Its services cover heating, ventilation, cooling, plumbing and electrical systems, as well as photovoltaics, energy consulting and project consulting.
Smart Sanieren GmbH
Since 2020 · 1–10 empl.5.0(7)
Smart Sanieren GmbH advises homeowners on energy-efficient building renovations and plans suitable measures. Its services include energy assessments, GEAK Plus reports, and the planning and supervision of renovation projects.
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.
Borer Energie- und Bauplanung GmbH
Since 2021 · 1–10 empl.
Borer Energie- und Bauplanung GmbH advises on energy efficiency, heating-system replacement and energy-efficient building renovation, and provides building assessments using the GEAK tool. The company plans and supports projects such as building renovations, extensions and new energy solutions.
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.
Aaresolar GmbH
Since 2024 · 1–10 empl.5.0(6)
Aaresolar GmbH plans, installs and maintains energy systems for buildings. Its services include photovoltaic systems, energy management systems, electricity storage, heat pumps, EV charging solutions, energy consulting and support.
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.
EnergieBauStelle GmbH
Since 2023 · 1–10 empl.
EnergieBauStelle GmbH provides energy advice and support for construction and building modernisation projects. Its services include advice on heating-system replacement and renewable heating options, planning and construction supervision, and energy consulting for municipalities.
Prioenergie GmbH
Since 2017 · 1–10 empl.5.0(2)
Prioenergie GmbH is an engineering consultancy specialising in efficient energy use and renewable energy. It provides advice and planning for building services and energy management, and supports the operational optimisation of systems and buildings.
Energietechnik Jäggi
Since 2022 · 1–10 empl.
Energietechnik Jäggi provides consulting, planning, installation and maintenance for electrical and IT systems, energy-generation equipment, and cooling and heating systems. Its services also include EV charging stations, energy consulting and smart-home solutions.
Allemann Energietechnik GmbH
Since 2016 · 1–10 empl.4.5(2)
Allemann Energietechnik GmbH provides consulting, planning and project support for heating, ventilation, air conditioning and refrigeration systems. Its services also include energy concepts, energy-efficiency advice and planning for building services in construction projects.
EPS Energy Plus Solution GmbH
Since 2018 · 1–10 empl.5.0(1)
EPS Energy Plus Solution GmbH supports smaller energy utilities in developing and implementing energy solutions. Its services include strategy planning, engineering, energy data management, electrical installations, smart metering and installation inspections.
gk Energie und Technik GmbH
Since 2024 · 1–10 empl.4.3(6)
gk Energie und Technik GmbH provides energy advice and optimisation, and plans and manages heating and plumbing projects. Its services include renovations, new builds and alterations, as well as installation and maintenance of heating and plumbing 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.
Bauwerkplus Laserscanning Zulian
Since 2021 · 1–10 empl.3.0(2)
Bauwerkplus Laserscanning Zulian captures buildings and terrain using 3D laser scanning and produces point clouds, 2D and 3D plans, and BIM models. Its services also include measurements of building envelopes and building systems, such as U-value, CO₂ and flow-rate measurements, as well as hydraulic balancing.
Energiepfad AG
Since 2026 · 1–10 empl.
Energiepfad AG provides energy consulting and specialist energy planning for construction projects. Its services include energy performance certificates, GEAK assessments, heating and cooling load calculations, renovation planning and support with subsidy applications.
Gasche Bau und Energie GmbH
Since 2015 · 1–10 empl.
Gasche Bau und Energie GmbH supports municipalities with building administration, including reviewing building applications and assisting with construction projects. It also provides interim project management for industrial companies and analyses energy-saving potential in processes.
EnergoBau GmbH
Since 2019 · 1–10 empl.
EnergoBau GmbH provides energy planning and optimisation services for new buildings and renovations. Its services include preparing cantonal energy certificates and MINERGIE applications, as well as advice on heating systems, insulation, GEAK assessments and building renovations.
aerni bau Consulting GmbH
Since 2022 · 1–10 empl.
aerni bau Consulting GmbH provides consultancy and project support for building envelopes. Its services include technical assessments, expert reports, tendering, detailed planning, quality assurance, project management, energy consulting and training on roof and façade construction.
suntec4u GmbH
Since 2011 · 1–10 empl.
Optistrom AG
Since 1989 · 1–10 empl.
H. Metzner, Solarenergie-Technik
Since 1993 · 1–10 empl.
Energie- und Sanierungskonzepte Lüthi
Since 2010 · 1–10 empl.
Batimo AG Architekten SIA, Zweigniederlassung Olten
Since 2011 · 1–10 empl.
egt Beratung Hans Jörg Mumenthaler
Since 2011 · 1–10 empl.
asontec GmbH
Since 2013 · 1–10 empl.
H-O OEGERLI MARKUS ARCHITEKTEN SIA AG
Since 2015 · 1–10 empl.
Muttenzer Architektur und Baudienstleistungen
Since 2015 · 1–10 empl.
Wicki-Wyss GmbH
Since 2015 · 1–10 empl.
SyEnergy AG, Zweigniederlassung Härkingen
Since 2022 · 1–10 empl.
Ornot Consulting GmbH
Since 2023 · 1–10 empl.
Ackermann Beratungen GmbH
Since 2024 · 1–10 empl.
Energy consulting in the Canton of Solothurn
Energy consulting in the region
Point size by number of companies per place.
Source: commercial register (Zefix) · as of November 15, 2026
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