[en] This comprehensive report made by the Swiss Federal Office of Energy (SFOE) presents the statistics on electricity production and usage in Switzerland for the year 2009. First of all, an overview of Switzerland's electricity supply in 2009 is presented. Details are noted of the amounts generated by different sources including nuclear, hydro-power, storage schemes and thermal power stations as well as energy transfer with neighbouring countries. A second chapter takes a look at the balance of imports and exports with illustrative flow diagrams along with tables for total figures from 1950 through to 2009. For the summer and winter periods, figures from 1999 to 2009 are presented. The third chapter examines the production of electricity in the various types of power stations and the developments over the years 1969 to 2009, whereby, for example, statistics on regional generation and power station type are looked at. The fourth chapter looks at electricity consumption in various sectors from 1984 to 2009 and compares the figures with international data. The fifth chapter looks at generation, consumption and loading on particular, selected days and chapter six considers energy exchange with Switzerland's neighbours. Chapter seven takes a look at possibilities for extending generation facilities in the period up to 2016. Eventually, chapter eight reviews the economical aspects of power generation, distribution and sale in Switzerland