End User
City of Athens
Description
The PV Performance & Self-Consumption Optimisation service addresses the operational management and performance assurance of photovoltaic installations across municipal buildings, while simultaneously maximising the proportion of locally generated solar electricity consumed within each building. The service combines inverter-level fault detection and degradation monitoring via direct API integration with a real-time load alignment capability that shifts flexible building loads into solar generation windows to increase self-consumption.
Core Capabilities
Monitoring & Anomaly Detection
Predictive & Prescriptive Analytics
Optimization & Decision Support
Business Need
Municipal buildings with rooftop PV installations face two related challenges: ensuring that solar assets perform at or near their rated output (detecting faults, soiling, and degradation), and maximising the value of generated electricity by consuming it on-site rather than exporting it at low compensation rates. These challenges require the same underlying data and serve the same objective, making a unified service more effective than separate point solutions.
Key Performance Indicators
Fault detection precision and recall against confirmed faults from maintenance records
Generation loss estimation accuracy (MAPE) for confirmed fault events
Self-consumption ratio improvement in periods with active load-shifting recommendations
Performance ratio trend accuracy validated against annual maintenance assessments
Data Provided
Inverter-level generation data at 15-minute resolution via direct API integration
Solar irradiance and temperature data for performance ratio computation
Net consumption forecasts from the Short-Term Load Forecasting service
Fault alerts classified by severity and cause with generation loss estimates
Weekly PV fleet performance report across all installations
TEF
TEF BUILD