The KKM went into commercial operation on 6 November 1972. The boiling water reactor with a net nominal capacity of 355 MW is a typical base load thermal power plant that produces electricity round the clock. The KKM is BKW's largest production plant, covering some 40% of electricity demand in BKW's supply region. The plant's availability of 89.8% and capacity load of 85.9% - both high by international standards - reflect its reliability and operating safety, and attest to the technical expertise of KKM staff. Over the past three years the plant has recorded the highest production figures since it was first commissioned. The plant generates electricity for some 400,000 consumers and, with a staff of some 300, is an important source of employment. Internationally, the safety standards are regarded as exemplary. Active and passive safety measures, coupled with protective barriers and a meter-thick reinforced concrete shield building, ensure both personal and environmental protection. In terms of energy security for North Western Switzerland, it is essential that the KKM remains on the grid for as long as it can be operated safely and economically. Maintenance and ongoing modernisation of the production facilities are carried out routinely but also with a view to the plant's long-term operation well beyond 2012. Both in terms of safety and operating technology, it is fully equipped for this purpose. The continued operation of the KKM and its long-term replacement on the existing site (preparations for submitting a framework permit application are under way) are important elements in BKW's strategy and will contribute to addressing the emerging electricity supply deficit in Switzerland.