A swiss success story:
from local to global player

Our company


All of our products are developed, manufactured and tested in our facility in Sion, in the middle of the Alps. The country is world-famous for its spectacular mountains, impressive nature – and the pioneer spirit of the entrepreneurs. With the founding of Studer 30 years ago, Roland Studer was one of the first to bank on the success and possibilities of renewable energies. Born with the mission of offering innovative and reliable products for the offgrid market along with long-time service, this purpose has driven our success history for more than 30 years as battery-based inverters and MPPT´s experts.

illustration Sion



Our products have grown along with the necessities and improved as our experience expands. From our first pure sine inverter which stood out for offering the lowest standby consumption ever, to the Next series, the latest generation inverter-charger.



High quality products live from consistent further development. That’s why Studer invests more than 30% annually in research and development. In this way Studer is positioning itself for the challenges in the solar market.



High quality products come together with high added-value services. A Studer device is supplied with every detail. Our client benefits from comprehensive technical documentation, that can be complemented at any time with our technical support and after sales service. In order to improve our customers’ experience, Studer has devised financial and digital services that are unique in the world and essentially adapted to the current markets, confirming Studer’s position as a top-of-the-range player in the field of power electronics.

Studer made power: quality + innovation + service


The best part of our job is knowing we help our clients succeed. Our goal is to bring our customers value. We provide that value in a well-functioning solution, which is well taken care of and at the end is more efficient.

quality + service + innovation

Premium quality will make your business more efficient


Swiss quality require full control of the development and the manufacturing process until the final testing of every single product before dispatching. This is what brings the product reliability that we are known for, and proud of.

Innovation & services


Innovation is what defined us from the beginning, the heart of the company. Offering our clients all the possible tools so they can make the most out of the device and ensuring the widest possible data input is essential for us.


And in order to assure all these, our service, which is unique in the sector. We accompany our clients to make sure they are guided until que end of the process, when they feel they have taken full advantage of their device. Our commitment of after sales service arrives right to the end-customer.

Flexible business


Understanding our customers is essential for increasing performance of your devices. Asking for feedback helps to improve customer service and adjust to the client needs. But most importantly, Studer uses feedback to improve personalization, which helps to build the best product for you.


This customized solution is key to our company. We adapt to your necessities and develop a customized solution together. We offer support to integrate studer into your solution and with every compatible battery we customize a solution to meet your business needs.


Our support offers a complete backbone with end-to-end optimization.


Quality + environment


We are proudly certified ISO 9001 and 14001 to keep our quality and environment management at the highest levels.

Environmental policy


The protection and control of Studer’s impact on the environment is an integral part of our values. The ISO14001 certification is the visible part of it from the outside. The company takes into account the various ordinances and relevant laws in terms of the environment. Each activity of the company is analyzed according to the different possible impacts. The points identified are regularly reviewed in order to assess the reasonably possible reduction of these impacts and an action plan is put in place.


The electrical consumption is a preponderant aspect to which particular attention is paid. Thus, since 2017, all the electrical energy consumed comes from renewable sources. Each waste is systematically sorted and inserted into the planned recycling sector. Everyone, according to their activity, is made aware of the possible environmental effects. The Valais-Excellence certification validates the choice of proximity when possible, thus further reducing the ecological footprint.


Système de Management Certifié SQS ISO 9001 / 14001

Quality policy


Our quality policy applies to all our activities and aims in particular to:

  • Meet the applicable requirements according to ISO 9001
  • Preparing for the future by proactive and systematic listening to customers, monitoring appropriate technology and constant innovation at all levels of the company.
  • Guaranteeing the efficiency of the daily activities by controlling processes, competitive quality and first-rate costs.
  • Maintaining an omnipresent continuous improvement in the operational as well as in the strategic levels.
  • Provide targeted service for each client with short and reliable lead times.
  • Integrate economic, ecological and social aspects into our quality requirements followed by a sustainable development approach.
  • Meet the local sustainable development requirements of the Canton of Valais regulated by the “Valais Excellence” certification.
  • Make satisfaction a natural and daily reflex in everyone’s mind.
  • Engaging staff through communication, training and recognition.

We are proud members of…

Solar Impulse efficient solutions

Solar Impulse

Towards a portfolio of 1000 labelled solutions

To address environmental challenges while enabling economic growth, Bertrand Piccard has launched, through the Solar Impulse Foundation, the challenge of selecting 1000 profitable solutions to protect the environment in order to convince decision-makers in governments and businesses to achieve their environmental targets and adopt more ambitious energy policies, which are necessary to pull these solutions to market.

The aim: to accelerate the transition to a carbon-free and sustainable economy.


A label focused on both the environment and profitability

The first label to assess the economic profitability of products or processes that protect the environment. The Solar Impulse Efficient Solution Label is attributed following a strict selection process performed by external independent experts. By ensuring high standards of sustainability and profitability, this internationally recognized label is considered as a recognition for innovators and as a credible marker of quality for solution seekers in business and governments, facilitating their sourcing of solutions to reach environmental commitments.


Boosting the adoption of profitable solutions to protect the environment

The Solar Impulse Foundation aims to identify clean, efficient and profitable solutions in order to accelerate their implementation and the transition to a sustainable economy. Thanks to the awarding of a label with high standards of sustainability and profitability, the Foundation can support political and economic decision-makers in their efforts to achieve their environmental targets and encourage them to adopt more ambitious energy regulations, necessary for implementation at large-scale of these solutions on the market.

A way to take the success of the first round-the-world solar flight further.

Valais excellence certified

Valais Excellence

Decades of local anchoring

We have been developing, manufacturing and testing our products in Sion (Valais region), in the heart of the Swiss Alps, ever since 1987. We therefore wanted to show that we belong to this magnificent region by joining the “Valais Excellence” label.

This certification was created to reward those Valais-based companies which stand out because of their social and environmental performance, while continuously improving their products and services.


Quality assurance for our partners

For Studer’s partners, the label is evidence that our company

  • is based in the Valais
  • holds ISO 9001 certification for quality and ISO 14001 for the environment
  • is committed to the Valais and its inhabitants

In order to be eligible, we had to meet a number of criteria relating to governance, as well as societal, environmental and human aspects. Our internal processes were analysed, in particular those involving the development of our products, our facilities and our relations with local partners.

We were really keen to have a positive influence on the Valais ecosystem, which has allowed us to develop over time.

ARE (Alliance for Rural Electrification)

Alliance for Rural Electrification (ARE), as an international business association based in Brussels, encourages access to affordable and clean energy to rural people with low and medium incomes. They promote decentralised energy access for the 21st century.

ARE enables improved energy access through business development support for more than 170 Members along the whole value chain for off-grid technologies.

Furthermore, they provide technical / financial recommendations and want to match B2B companies with financing solutions by facilitating access to funds.

They offer as services for their members Market intelligence, policy & Advocacy Support, Communication / Marketing and an international job platform.


Collaboration about the future of Energy

We think that our goals are common because we both want to reduce carbon emission and increase access to clean energy for off-grid applications. We are participating actively in international events in order to pave the way to a brighter future.

Executive team

Federico web

Federico Marescotti

Chief executive officer


Pierre-Olivier Moix

Chief technology officer

Pierre-Olivier is a master electrical engineer in power electronics and renewable energy systems. He has over 18 years of experience across various academic and practical roles, including researcher, developer, installer, and professor.


He joined Studer in 2005, working as a development engineer and then later as R&D manager. In 2012, he moved to HES-SO Valais/Wallis as a researcher and professor in renewable energy and smart grid systems. He was also an innovation engineer at Energies Sion Région (ESR), the local DSO in Sion.


In 2014, he and Loïc Viret co-founded offgrid.ch, a company specializing in high-altitude offgrid solar installations. In 2019, Pierre-Olivier rejoined Studer as a board member and CTO. He holds a master’s degree in electrical engineering from EPFL, the Swiss Federal Institute of Technology in Lausanne.

Management team

Coralie portrait

Coralie Rappaz

Head of administration and HR

Coralie has almost 20 years of administration experience and has been with Studer since 2003. She is one of the company’s longest-tenured employees and oversees all administrative and personnel-related matters. Her passion for renewable energy and her dedication to Studer’s teams and people have been critical in supporting the company’s growth around the world.


Coralie holds a federal diploma of higher education of international business administration from FormInter in Switzerland.


Raphaël Zufferey

Head of operations

Raphaël has over 20 years of experience in the production of power electronics for offgrid and ongrid energy systems. He joined Studer in 2013 as a production manager and now serves as head of operations. He is highly skilled in electronic production systems and supply chain management, helping to maintain Studer’s meticulous quality control standards across its expanding product range.


Raphaël holds a federal diploma of higher education of production in industrial technology from Swissmechanic.


Yann Cuenin

Head of R&D

Yann brings ten years of R&D and project management experience to Studer and now oversees the company’s hardware engineering team. He previously worked for the power electronics company ABB and the EV charging systems manufacturer Green Motion. He joined Studer in 2019 as an electrical engineer and was promoted to head of R&D in early 2023. Yann is also a renowned fossil specialist and has made a name for himself with his own company, Nevadia Sàrl.


Yann holds a master’s degree in electrical and electronics engineering from HES-SO in Switzerland.


Serge Remy

Head of sales

Serge has more than 25 years of international sales experience and has been with Studer since 2001. He previously served ten years as area sales manager for Solarforce, working with global manufacturers of solar cells and inverters. Serge prides himself on reliability and loyalty, and has fostered many of the long-lasting client and partner relationships that have driven Studer’s worldwide success.


Serge holds a Federal certificate/Federal diploma of higher education of sales management from MPM Lausanne.


Thibaud Rossini

Head of technical service

Thibaud has more than a decade of experience in technical and after-sales support. After joining Studer in 2010 as a part-time electrician, he worked for seven years as an after-sales manager. Thibaud is now head of technical service, overseeing Studer’s product support management, installations and follow-ups, apprentice training, and ongoing service improvements. In his spare time, he is a dedicated athlete and enjoys CrossFit training and coaching.


Thibaud holds a bachelor of science in industrial systems from HES-SO Valais/Wallis.


Céline Remondeulaz

Chief financial officer

Céline is the newest addition to Studer’s management team and brings a wealth of financial and accounting expertise. She previously worked for ten years with the ‘Centre de Cautionnement et de Financement’ (CCF SA), providing a broad range of financial services to Valais companies and startups. Céline also spent 12 years with the Cantonal Bank of Valais. As a dedicated financial professional, she is excited to continue Studer’s international growth as chief financial officer.


Céline holds a diploma in business economics from HES-SO Valais/Wallis and a certificate of advanced studies in finance and accounting from the University of Lausanne.


Pablo Muñoz Picos

Head of marketing / Technical Service Manager of Studer Oceania

Pablo has more than 15 years of experience in the renewable energy sector. He previously worked as a project engineer for Trama TecnoAmbiental, a Spanish-based international consulting and engineering company specializing in distributed renewable energy generation. There, Pablo oversaw engineering and project management for solar mini-grids and rural electrification projects in countries including Chad, Ghana, and Tanzania.


Pablo joined Studer in 2017 as a technical support manager and has been head of marketing since 2021. Pablo has lived in Spain, Germany, South Africa, Senegal, Chad, Switzerland and from 2024 in Australia, where he will start a new role as technical service manager for Studer’s Australian operations. He studied telecommunications engineering at UPM in Madrid and international business administration at ICEX-CECO.


Victor Penas

CEO of Studer Corp

Victor is the CEO of Studer Corp, a US branch of Studer Innotec SA. He is an industrial systems engineer specializing in renewable energy. Victor joined Studer in 2009 and served as European sales manager for over 13 years. In this role, he built strong commercial relationships with Studer’s distributors and integrators throughout Europe and West Africa. He prides himself on being results-driven and helping his clients find the most advanced technical solutions for clean energy systems.


Victor is a graduate of industrial systems engineering at HES-SO Valais/Wallis. He currently lives in Florida and is proficient in six languages.


We are studer

Meet our international team