Govt Sets New Rules for Inverter Monitoring Under Solar Scheme

28 Jul 2025 CW Team

The Ministry of New and Renewable Energy (MNRE) has released draft guidelines on remote monitoring systems (RMS) for inverter communication devices, dongles, and data loggers under the PM Surya Ghar: Muft Bijli Yojana. These guidelines mandate remote monitoring capabilities across all inverter types, including strict software and data storage requirements. Feedback on the draft has been invited by 31 July.

The move is likely to disadvantage several local suppliers, particularly those importing white-label inverters from China and selling them under domestic brands. With MNRE targeting 1 September as the tentative date for testing new integration protocols, manufacturers will need to act swiftly to comply.

The guidelines align with global standards but may require time for adaptation, especially for importers. Leading inverter brands such as Sungrow, Solis, and Hoymiles—predominantly Chinese firms—already offer inverters with remote monitoring features. However, they may still need to customise their systems for local data storage and Indian compliance requirements.

Beyond safety and cybersecurity, the new norms aim to enhance grid transparency and performance accountability. A robust, locally integrated RMS will enable faster real-time generation tracking, fault detection, and improved performance visibility for EPC contractors, benefitting both customers and the government.

The mandate includes the use of machine-to-machine (M2M) SIMs and data storage on Indian servers for all inverters deployed under the scheme. Some suppliers may face a learning curve as they reconfigure their hardware and software to meet these requirements.

To support standardisation, MNRE is also finalising a vendor-neutral, open communication protocol for rooftop solar (RTS) monitoring and control, which will be integrated via the government’s National Portal.

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