Real-time visibility of solar generation & Accurate tenant billing

Stoneweg, the landlord of Thorn Lighting (Zumtobel Group) and Tridonic sites, owns a 2.1 MWp solar PV system with 15 inverters serving multiple tenants. Managing shared generation and billing across tenants created challenges: lack of performance visibility, potential lost revenue, and risk of tenant disputes. Leadership needed a scalable, transparent, and compliant solution to ensure full utilisation of the system while maintaining tenant confidence.

• Limited visibility of solar system performance across a multi-tenant site.
• Complexity in allocating shared generation fairly for tenant billing.
• Risk of lost revenue and disputes over energy consumption.
• Need to comply with energy metering, Feed-in Tariff, and consumer protection regulations.
• Desire for a scalable, repeatable landlord-solar model.

• Deployed SolarEdge monitoring to track panel and inverter performance in real time.
• Installed smart meters for tenant-level consumption data.
• Introduced automated tenant billing, ensuring transparent and accurate cost allocation.
• Created dashboards for landlord and tenant visibility of generation, usage, billing, and revenue.
• Delivered compliance-ready reporting to support regulatory requirements.
• Continuous performance monitoring with alerts to maximise uptime.
• Regular reporting to landlord and tenants to maintain billing accuracy.
• Compliance updates to meet evolving energy regulations.