Duralis Energy

Innovating for a Sustainable Future

Specialists in energy efficiency and building physics

From concept to implementation, we support you at every stage of your project. Drawing on our expertise and extensive experience, we advise you from the very earliest planning stages to identify the most suitable technical solutions.

With over 25 years' experience, our team supports project owners and architects in the planning, renovation and optimisation of technical installations. Our aim is to improve the energy performance of buildings in the construction, industrial and service sectors.

We operate in the canton of Vaud and throughout French-speaking Switzerland.

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Duralis Energy engineering team at work — sustainable building energy consulting in Lausanne, Switzerland

+ Successful Projects

% Client Satisfaction

Services

Comprehensive energy solutions for residential, commercial, and industrial projects across Switzerland

Consulting

Expert Guidance

Thermal assessments, Building physics, AMO (Assistant Project Manager) and more.

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Engineering

Systems Design

Heating, Heat pumps, Ventilation & Technical Installations.

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Solar

Renewable Energy

Solar photovoltaic & Solar thermal solutions.

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Cooperation

Regional Planning

Drinking water supply, Energy planning & Technology transfer.

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Our Story

Find Out More About Us

25 years of expertise in energy and building physics

Duralis Energy operates in the energy sector throughout French-speaking Switzerland and abroad.

Our company is primarily made up of highly qualified engineers, graduates of Swiss universities such as EPFL and ETH Zurich, amongst others.

We prioritise high-quality, meticulous work, meeting deadlines whilst remaining flexible.

Our aim is to support private individuals, businesses and public authorities in their journey towards sustainability, particularly through renewable energy and energy efficiency.

Commitment

Listening.
Supporting you right through to the completion of your project.
Defending your interests.
Environmental and economic efficiency.

Our Values

Reliability.
Respect.
Independence.
Flexibility.

Duralis Energy office in Lausanne — founded in 2002, specialising in energy engineering and sustainable building certifications

Quality Certified

Since 2002

Professional Certifications

Duralis Energy relies on recognised international and national standards, certified expertise, and industry best practices to guarantee reliable and compliant services.

Cantonal Energy Performance Certificate (CECB)

Cantonal Energy Performance Certificate (CECB Plus)

Minergie®

Swiss standard for energy performance and comfort

SNBS Sustainable Standard

Swiss standard for sustainable construction

Essential Tools

Lesosai

EcoSai

Flixo

Polysun

CECB

CFD

AutoCAD

epiqr+

SIA

Measurable Excellence in Every Detail

Our track record reflects more than two decades of dedication to quality, sustainability, and technical excellence across Switzerland and beyond.

Projects Completed

Successfully delivering energy engineering projects across Switzerland and internationally since 2002.

Client Satisfaction

Our clients consistently rate our technical expertise and project management as exceptional.

Satisfied Clients

From private homeowners to public authorities and developers, our clients trust us with their energy projects.

Years of Experience

Founded in 2002, over two decades of engineering excellence and continuous innovation in sustainable energy.

Industry Recognition

Recognized for excellence in energy engineering by our clients, partners, and the Swiss engineering community.

What Our Clients Say

Trusted by property owners, developers, architects, and public authorities across Switzerland

Duralis Energy managed our building renovation from the initial energy audit through to Minergie certification. Their team was thorough, always available for questions, and delivered everything on schedule.

We've worked with Duralis Energy on multiple residential projects. Their heat balance calculations, HVAC design, and solar integration are consistently precise. A reliable technical partner we trust fully.

As an architect, I need energy engineers who deliver accurate building physics studies on time. Duralis Energy has been my preferred partner for AMO assignments. Rigorous, professional, and collaborative.

Duralis Energy supported our community's territorial energy planning programme. Their approach was structured, collaborative, and completely aligned with our long-term sustainability goals.

After Duralis Energy optimised our heating systems and installed a photovoltaic plant, our annual energy costs dropped substantially. Excellent expertise, transparent process, and outstanding results.

Our Work

Selected energy renovation projects across the Vaud canton — heritage residential buildings and individual villas raised to a high energy class

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F.A.Q

Frequently Asked Questions

What types of projects does Duralis Energy specialize in?

Duralis Energy specializes in energy engineering and consulting projects, including building energy efficiency, HVAC systems, renewable energy solutions (solar thermal and photovoltaic), and sustainable water management. We work on both new constructions and renovation projects.

In which regions does Duralis Energy operate?

Our primary area of operation is Switzerland, particularly the French-speaking regions. However, we also participate in international projects through technical cooperation, feasibility studies, and energy planning assignments.

Does Duralis Energy provide energy certifications?

Yes. We assist clients with recognized energy certifications such as CECB and Minergie, offering technical assessments, calculations, and full support throughout the certification process.

Can Duralis Energy support a project from design to implementation?

Absolutely. Duralis Energy can be involved at all stages of a project — from feasibility studies and conceptual design to execution, supervision, and commissioning — acting as a technical advisor or project partner.

Who are Duralis Energy's typical clients?

Our clients include private building owners, public authorities, real estate developers, engineering firms, and institutions seeking reliable and sustainable energy solutions tailored to their specific needs.

Contact Us

Start your energy project today — we respond within 24 hours

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We will love to hear from you

We'd love to hear from you. Get in touch with our team.

Address

Rue du Maupas 38
Case postale 0459
1001 Lausanne, Switzerland

info@duralis-energy.ch