d | f | e  Print

Photovoltaic Laboratory


The PV LAB proudly presents its annual report 2014.

We wish you good entertainment.

Job Description assistantship "PV inverter test"

We are looking for an electrical engineer with experience in testing of PV inverters. Read the job description here.

Opening of the BFH–CSEM Energy Storage Research Center ESReC

The Bern University of Applied Sciences focuses its research groups on electrochemical storage technologies organizationally and locally in the building of InnoCampus AG in Biel. More information and registration here.

Grossrat Urs Muntwyler resigns

After two years in the Grand Council, Professor Urs Muntwyler resigns to focus on the research for the "energy turnaround". His work as director of the photovoltaic laboratory at the Bern University of Applied Sciences requires his full attention.

"New PV plant Jungfraujoch is progressing"

New PV plant of 3000 Wp at the facade of the high alpine research station Jungfraujoch with the aletsch glacier in the background.

"Mutli-String - Inverter is progressing"

  • Currently, the accreditation of our 100kW PV inverter test stand
    is underway.
  • As soon as the multistring-simulator is operational, it is planed to accredit this test stand as well.
  • Achieving this, the PV lab of Berne university of applied sciences will be the only independent institution in Switzerland that can carry out certificated tests on both single- and multi-MPPT PV inverters.

PV - Laboratory intensifies

Christian Renken, CEO of CREnergie Sàrl get involved into PV LAB.

Evaluation of partial shading strategies

Shading is a common problem for PV-systems. This leads to yield losses and in worst case to destroyed cells.


Solar water pumping project in India is progressing

A small power (40W-120W) photovoltaic pump system was developed at Bern University of Applied Sciences (BFH) in Switzerland. Operational field-tests of the prototype pump were carried out in 2012 with a female farmers’ association at Mulanthuruthy, India.

IA-HEV 2013 Task 15 Report - Plug-in Hybrid Electric Vehicles





hitech - the Magazine

The new hi-tech - Magazine is here. It includes contributions to photovoltaics at the Bern University of Applied Sciences and the Laboratory for Photovoltaics.

Latest issue of hitech


As the need for light in the developing world rises, so does the demand for alternative energy sources. The SmartLight project unites latest technologies for photovoltaics, intelligent power electronics and LED lighting. The incorporated micro-financing management system allows affordable replacement of poor kerosene light.

Further informations to the oolux solar power kit which has been co-developed at the Laboratory for Photovoltaics can be found by following the links below.

Official oolux-website

Article in hitech 1/2013

Short Course on Photovoltaics for Worldwide Professionals

In collaboration with Ecolution Engineering AG and SystmPV AG, the Photovoltaic Laboratory now offers a 6-week course in photovoltaic design and installation for worldwide professionals. After completion of the course, trainees will be able to plan and build own PV installations based on international standards. Registration for the spring 2013 course is open!

Flyer and application form can be downloaded here:

Ecolution Engineering AG > PV Training

Book "Photovoltaics - System Design and Practice" published 2012

In this translation of the German edition 2010, which is considered as a standard reference book by many German PV professionals, the possibilities and problems of direct conversion of sunlight into electricity in grid-connected and stand-alone PV systems are thoroughly discussed by the author, Prof. Dr. Heinrich Häberlin.

For many places around the world between 60°N and 40°S  the necessary data for the design and the calculation of the energy yield can be found in the book. For many plants from several countries in different parts of the world also measured long-term yield data for many years are indicated. 

Information sheet and order form

EU Project PV-Servitor

From 2009 to 2011 the Photovoltaic Laboratory was part of the EU project PV-Servitor. Main target of this project was to develop a fully autonomous cleaning robot for PV free field plants. It was a challenging task, and at the end of the project the robot was not yet ready for market. But during this two years scientific findings could be gained and the PV lab was a good partner by giving support in PV system technology matters.

Webpage PV-Servitor

Comparison of pollution of two PV plants [german]


New record for normalised annual energy production of PV plant Jungfraujoch (3454m)

PV plant Jungfraujoch (effective peak power 1.13 kWp, 3454 m above sea level), which was erected in 1993 by the PV laboratory of the Berne School of Engineering and Information technology, has established a new record for normalised annual energy production in 2005. Despite a line interruption of one day (23.8.2005) in the valley, in 2005 1537 kWh/kWp were produced with a winter energy fraction of 48.5%. Thus the old record dating from 1997 (1504 kWh/kWp) was trespassed considerably.

Without the line interruption, in 2005 the production would have been even 1540 kWh/kWp. In the average of 1993 to 2005, PV plant Jungfraujoch has produced 1407 kWh/kWp with a winter energy fraction of 46.3%.

[more information]

[normalized yearly analysis]


Head of the Laboratory

Prof. Urs Muntwyler

Senior Consultant

PD Dr. Eva Schüpbach 


Christian Renken

Scientific Assistants

Luciano Borgna

Daniel Gfeller


Monika Jost

Thomas Schott

Duglas Urena Hunziker

André Werder

Manuel Lanz

Tech. Staff

Werner Reichen


Prof. Dr. Heinrich Häberlin


Berner Fachhochschule

Technik und Informatik

Institute for Energy and Mobility Research


Jlcoweg 1

CH-3400 Burgdorf

Helpful Information

Detailed map Photovoltaic Laboratory

General Terms and Conditions of BUAS

GTCs English