As Prewin network we issued a questionnaire to waste to energy plant operators on availability. Data from 208 lines processing 2750 tonnes of waste per hour has been gathered. Results from availability, unplanned outage and overall equipment effectiveness are available. Further it shows clearly different maintenance strategies (time between planned stops and length of planned stops). A powerpoint presentation with results is available for participants in the private part of the website. More data from plants is always welcome.