The European Union has made it compulsory for planning authorities to consult statutory consultees and the public on all plans and programmes that require an Environmental Impact Assessment. This means conducting consultation exercises that are costly and require specific expertise to carry out. The PARTERRE project will take two products that have successfully addressed these issues in their home countries and pilot them in five European countries. DEMOS-Plan, developed by TuTech in Germany and deployed across the board in the federal state of Hamburg, allows planning authorities to conduct consultations with statutory consultees and the public online, and automates the consultation process. This saves money by avoiding sending paper documents by post and offers new innovative ways for consultees to submit their opinions. The Electronic Town Hall Meeting (eTM), brought to Europe by the Italian company Avventura Urbana, is a standardised procedure for conducting high quality consultation events with large numbers of participants in several locations simultaneously. Both products yield results that are useful to the planning authority and easy to integrate into existing processes. They help the planning authority comply with the legal duty to consult whilst ensuring that costs are kept under control. PARTERRE is developing an integrated solution that combines DEMOS-Plan and eTM to offer a comprehensive system covering both online and offline consultation.