National Registry of Solar Rooftop

(RTS)systems. With over 25.72 GW of grid connected rooftop solar capacity installed, RTS adoption is accelerating across residential, commercial, and institutional sectors. However, despite this growth, the absence of a unified national tracking system creates significant visibility gaps for grid operators and policymakers. This impairs accurate generation forecasting, real-time grid management, and compliance monitoring, ultimately affecting the reliability and resilience of the power system.

To address this, the India Smart Grid Forum (ISGF), with support from the Ministry of New and Renewable Energy (MNRE), Paschim Gujarat Vij Company Limited (PGVCL), Madhya

Pradesh Poorv Kshetra Vidyut Vitaran Company Limited (MPPKVVCL), and other stakeholders, has developed the National Rooftop Solar (RTS) Registry. This centralized, real-time digital platform serves as a scalable repository of rooftop solar systems across India.

It provides granular visibility into installations state-wise, DISCOM-wise, feeder-wise, and distribution transformer-wise supporting informed decision making in planning, forecasting, compliance, and grid operations.

Equipped with advanced digital tools and the registry offers real-time dashboards and historical analytics for DISCOMs, State Load Dispatch Centers (SLDCs), Regional Load

Dispatch Centers (RLDCs), and regulatory agencies. The platform is also future ready, designed to integrate with smart inverter data and integrate with existing SCADA/DMS and

AMI systems, ensuring compatibility with global best practices and enabling interoperability across utility infrastructures. Looking forward, the Registry is positioned to evolve into a broader National Distributed

Energy Resource (DER) Registry. This expanded platform would include battery energy storage systems (BESS), electric vehicle charging infrastructure (EVCI), vehicle-to-grid

(V2G) systems, and other behind-the-meter technologies. Such a framework will help build distributed energy markets, enhance grid flexibility, and support consumer centric modernization. It will also underpin resource adequacy planning and distributed load forecasting, both essential to achieving India’s 500 GW non-fossil fuel target by 2030.

With the right policy support, institutional collaboration, and robust digital infrastructure, the

RTS Registry can transform India’s solar ecosystem. It bridges the gap between physical assets and digital intelligence, empowering utilities, regulators, and prosumers alike. This initiative marks a vital step toward a decentralized, transparent, and climate resilient energy future.

Currently, historic RTS data from PGVCL, Gujarat and MPPKVVCL, Madhya Pradesh have been uploaded to the Registry. A Standard Operating Procedure (SOP) has been developed for other DISCOMs to upload existing RTS data. The Central Electricity Authority (CEA) is expected to take over long-term stewardship of the Registry, with regular inputs from

DISCOMs and SLDCs.