Energy Pathfinder aims to support owners of historic buildings in the NPA region and in Europe, by building and demonstrating an on-line Toolkit, which enables the culturally and socially appropriate energy retrofit of historic buildings. To support this Toolkit, Pathfinder! Will draw experiences from the application of co-design processes (involving users and residents), from relevant retrofit measures and renewable energy installations, and from user-engagement and improved energy behaviour experiences. The Toolkit and component actions will allow building owners to consider working towards Near Zero Energy (NZEB) standards. Pathfinder will monitor actual energy use in 5 demonstrator historic buildings, both before and after retrofit, and establish the benefit of different measures. This will include both centralized and decentralized energy management and improved energy behaviour. Energy Pathfinder will evaluate the business case for retrofit and for energy management in historic buildings, demonsrating that they can be sustainable from and energy and CO2 perspective, economically viable and socially and culturally relevant. Energy Pathfinder brings together Partners from 5 NPA regions, encompassing a comprehensive range wide range of skills, building types, climatic conditions, and cultural and regulatory environments. Associate partners will help integrate local authorities, building owners and other key stakeholders into the Project. 6 demonstrator historic building will be used to demonstrate the key elements of the Toolkit, including co-design, insulation, renewable energy, and energy monitoring and management. These demonstrators will provide data for the on-line Toolkit. The results of the project will be widely promoted and disseminated through a comprehensive communication programme.