Low-power PV Photovoltaic energy harvesting in low light conditions such as indoors, or under artificial or diffuse light can be used to power sensors, as well other low-power electronics. Efficient energy harvesting combined in an energy system with storage unit and low power electronics, can enable a wide range of applications, integrating new functionalities, for example autonomous sensors, domotics, remote monitoring, variable transmission applications and portable devices in general.Proposals are expected to validate novel and low-environmental impact PV materials, PV architectures and suitable substrates for the specific low power applications that take into account the light intensity, light spectrum and application itself. PV system performance is expected to be tailored to meet the application-specific power and energy requirements and application – related standards. Proposals should include a clear definition of the use case and lifecycle considerations, e.g. business models, circularity by design aspects, certification, etc.Applicants can seek possibilities of involving the EC JRC. The JRC may provide characterisation, validation and certification of the performance of photovoltaic solar devices. It may also perform pre-normative research to develop appropriate characterisation methods for such devices as a precursor to the adoption of international standards as well as addressing stability, lifetime and environmental issues. This task shall be performed within the European Solar Test Installation (ESTI) an accredited ISO17025 calibration laboratory for all photovoltaic technologies.