Executive Board



Yves Zumwald
CEO, Head of Corporate Services a.i.

Born in 1967, Swiss

Yves Zumwald is an electrical engineer who launched his long career in the energy industry in 1993 at Energie Ouest Suisse (EOS). After a spell as National Electrical Design Manager at Orange Communications, he returned to EOS Holding in 2002 when he took on responsibility for grid usage and access. Following this, he headed the Infrastructure department as a member of the Executive Board at EOS Réseau from 2005. Yves Zumwald took over management of the sales department and joined the Executive Board at the Romande Energie group in September 2009. In this capacity he made a significant contribution to the development and optimisation of the department while guaranteeing outstanding quality of supply.

Yves Zumwald joined Swissgrid in January 2014 as a member of the Executive Board and Head of Grid. In March 2016 the Board of Directors has appointed him as CEO of Swissgrid.


  • Head of Electricity department of the Federal Office for National Economic Supply


Maurice Dierick
Head of Grid

Born in 1964, Dutch

Maurice Dierick is a mechanical engineer, who started his professional career in 1991 with E. I. Du Pont de Nemours S.A. in France. He then moved to General Electric Plastics in Germany. Between 1998 and 2004, he supervised various projects in different businesses within the scope of the liberalisation of the energy market. From 2001 on, after the completion of the first phase of unbundling, he focused his attention on the structuring of asset management organisation, first for Cap Gemini Ernst & Young in the Netherlands and as of 2004 as a consultant to various energy supply companies in Belgium, Germany, France, Switzerland and Australia. In Switzerland, he was also involved in the market liberalisation in 2008.

Maurice Dierick joined Swissgrid in February 2015 as Head of Grid Infrastructure. Since June 2016 he is a member of the Executive Board and Head of Grid at Swissgrid.


Rainer Mühlberger
Head of Technology

Born in 1958, Swiss / German

Rainer Mühlberger has a degree in mechanical engineering as well as an Executive MBA from the University of Fribourg. He began his professional career in the telecommunications sector. From 1996 until 2000, he worked as Project Manager Corporate Strategy at Swisscom AG. He then moved to Swisscom Fixnet AG where he served as Head of Strategy and Business Development, and from 2002 until 2007 as member of the Executive Board – first as the Head of Business Development, then as Head of IT. In 2008, he was appointed as CEO of Swisscom Directories AG. He joined Swissgrid in December 2011 as Head of Strategy. In his function he significantly contributed to the successful transfer of ownership of the Swiss transmission grid as at 3 January 2013.

Rainer Mühlberger has been a member of the Executive Board at Swissgrid since October 2013. After being Head of Strategy & Development, he became Head of Technology as of 1st February 2016.


Jörg Spicker
Head of Market

Born in 1957, German

Jörg Spicker, a graduate in physics and a doctor of astrophysics, started his career as a consultant at GriPS GmbH in Frankfurt before moving into the energy industry in 1989. He initially worked at Ruhrgas AG, Essen where he filled various commercial and technical roles; his last position being Department Head for the procurement of North Sea gas. Jörg Spicker was Managing Director of Aquila Energy GmbH in Essen between 1999 and 2002. He then became a Board Member of the German subsidiary of the Swiss Atel Group, Atel Energie AG - from 2009 Alpiq Energie Deutschland AG – in Düsseldorf in the origination, distribution and generation management divisions. Before joining Swissgrid, he worked as Senior External Advisor at McKinsey in the energy trading, risk management and energy procurement and distribution divisions.

Jörg Spicker has been a member of the Executive Board and Head of Market at Swissgrid since October 2013.


  • Member of the Board of Directors of the Holding des Gestionnaires de Réseau de Transport d’Électricité SAS
  • Member of the Board of Directors of Epex Spot SE