Critical Incidents Number of sites with ISO number of total sites Average age of power stations, production or distribution sites including pipelines in years by type Operational availability of services to clients contractually warranted in percent Total number of critical incidents in relation to the total number of clients Lost kWh due to system faults in relation to total amount of kWh produced no information no information no information no information All of our sites with an environmental impact have an environmental management system with EN ISO 14001 or EMAS certification.