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SentinelPV - Hybrid Forecasting of PV Generation through Sentinel Plants and Geospatial Modelling

Duration:
01/12/2025 - 31/05/2027
Principal investigator(s):
Project type:
University research - Collaborative Projects
Funding body:
ATENEO (PRIVATI)
PoliTo role:
Sole Contractor

Abstract

The project SentinelPV addresses a key challenge in the energy transition: the accurate and real-time forecasting of photovoltaic (PV) production at the national scale in the context of increasing deployment of non-dispatchable renewable energy sources. The Italian PV portfolio consists of over one million installations, most of which lack real-time monitoring capabilities. As a result, production data often reach centralized systems with significant delays, reducing the ability to assess the actual contribution of distributed generation and increasing operational uncertainty in the power grid. To overcome this issue, the project proposes a hybrid methodological framework that combines physical modelling and machine learning techniques to deliver short-term forecasts of PV generation based on a representative sample of monitored systems.

The core idea is to identify a small but statistically significant set of “sentinel” PV plants, strategically distributed across different climatic and morphological zones. These plants will serve as proxies for the entire PV population, enabling the inference of national-scale production trends through limited but high-quality and real-time data. The identification of these sentinel systems will rely on multi-criteria clustering methods supported by geospatial analysis. In addition to geographic location, the selection will consider historical production profiles, meteorological variability, and plant-specific technical characteristics. The forecasting system will integrate physical models (e.g., solar irradiance estimation, panel temperature corrections, geometrical and electrical configuration) with advanced data-driven approaches such as neural networks, ensemble learning, and probabilistic forecasting. Particular attention will be paid to localized meteorological anomalies – such as Saharan dust transport – that may severely affect solar irradiance and are often poorly represented in conventional forecasting models. One of the expected outcomes is the identification of the optimal spatial resolution for clustering, enabling a balance between forecast accuracy and monitoring effort. A web-based demo software platform will be developed to support two levels of access: • Professional interface for system operators and stakeholders requiring accurate quantitative forecasts; • Public-facing GIS map, providing day-ahead PV production forecasts for communities, energy users, and prosumers. The demo will be implemented and validated in a selected pilot region, chosen for its geographical and morphological relevance. The platform will be designed for scalability and replicability in broader national and European contexts. The project is structured in six Work Packages: (1) review of state-of-the-art and critical forecasting challenges; (2) design of the hybrid modelling architecture and selection of sentinel systems; (3) development of the web platform; (4) quality control and dissemination through publications and public events; (5) preparation of a follow-up European collaborative project; and (6) overall management and coordination.

People involved

Structures

Keywords

ERC sectors

PE6_10 - Web and information systems, database systems, information retrieval and digital libraries, data fusion
PE7_12 - Electrical energy production, distribution, application
SH2_8 - Energy, transportation and mobility

Sustainable Development Goals

Obiettivo 7. Assicurare a tutti l’accesso a sistemi di energia economici, affidabili, sostenibili e moderni|Obiettivo 12. Garantire modelli sostenibili di produzione e di consumo

Budget

Total cost: € 90,000.00
Total contribution: € 90,000.00
PoliTo total cost: € 90,000.00
PoliTo contribution: € 90,000.00