Background Improving energy efficiency is one of the key goals of EU climate policy. This can be achieved through various measures at different stages of the energy chain: generation, transformation, distribution and consumption. The LIFE-ENERGA Living Lab-PL project focuses on consumption and will develop and test solutions for consumers/customers (mainly individual households) that encourages them to use electricity more efficiently. Objectives The project aims to demonstrate an innovative system for the efficient management of electric energy in private households. It will demonstrate, raise awareness of, and disseminate information about HAN solutions – an innovative system for efficient electric energy management in individual households. It will also contribute to the wider practical application of the system among domestic electricity customers, thus helping to reduce their CO2 emissions. More specifically the project will: Prepare HAN demonstration infrastructure and construct and install this pilot infrastructure in 60 apartments and 90 houses; Test the HAN system in "Living Lab" conditions, i.e. with active involvement of end-users; Conduct awareness-raising activities about HAN technology; Constantly monitor the impact of HAN on energy efficiency to determine the boundary conditions for its future implementation in other European cities. Expected results: HAN technology will be implemented and tested in real conditions; The installation of 150 individual pilot HANs; 30 pilot HAN installations working together with renewable energy sources; An analytical report summarising the HAN technology implementation tests; A technical report describing the power grid boundary characteristics necessary for effective HAN system implementation in a given area; The reduction of electricity consumption by 123.06 MWh per household; The reduction of CO2 emissions by 109.52 Mg per household; Materials promoting HAN technology; Approximately €16 000 of electricity consumption savings in households participating in the HAN technology tests; Testing and demonstrating new technological solutions in 300 households (150 households with HAN and 150 households applying Time of Use tariffs).