This report (deliverable) named D6.2 Implementation of solution is deliverable of WP6 within InterFlex H2020 (project co-founded by the European Commission). CEZ Distribuce as WP6 leader performing demonstration of innovative smart grid solutions in order to in-crease DER hosting capacity, integrate EV charging stations and home energy storage sys-tems more effectively and thus cover important challenges of European DSOs. The use cases demonstration is performed under the coordination and management of CEZ Distribuce. Partners involved in the WP6 are Austrian Institute of Technology (AIT), CEZ Solarni, Fronius, Schneider Electric and Siemens. As it is stated in GA in Description of Work (DoW), D6.2 Implementation of solution con-tains information about implementation process of all technical solutions of all use cases (UC1, UC2, UC3, UC4) which are described in deliverable D6.1 Design of solutions and also additional lab test results. This report describes the implementation of solutions for WP6 that were implemented within the project and which are a prerequisite for the demonstration of all use cases. The implementation phase of the Czech Demo (WP6) is now finishing which allows successful demonstration of tested solutions. After the demonstration and evaluation phase of the project, WP6 results will be reported in D6.3 Demonstration activities results (due date 12/2019). This final deliverable of WP6 will also contain KPIs evaluation and CBA and SRA of demonstrated solutions together with the regulatory framework update recommendations.