MNRE gives inverter makers until 16 September to confirm rooftop data stays in India

On 17 August 2026, the Ministry of New and Renewable Energy issued a notice titled "Compliance of guidelines issued by MNRE regarding inverter level generation data and storage of inverter-level data of Rooftop Solar systems."

It is a short document with a specific demand, and it is aimed at manufacturers rather than at households. But it concerns data generated on household roofs, which makes it worth understanding from the ground.

What the notice requires

The core requirements reported from the notice are:

• All inverter OEMs and manufacturers enlisted to supply under PM Surya Ghar must provide written confirmation to REC, with a copy to MNRE, within 30 days of the memorandum's issue — that is, by 16 September 2026.
• The confirmation must cover adherence to the secure communication guidelines already issued, and must verify that all inverter-level data resides on servers or cloud platforms located within India.
• Application servers, monitoring and control servers, cloud platforms and associated real-time data must sit within India's geographical boundaries, in an encrypted, secure and protected environment.
• The warranty on the data logger must be included within the overall inverter warranty.

Daily generation reporting through a standardised API to the central platform is part of the same framework.

This did not appear from nowhere

The August notice enforces a structure MNRE has been assembling for over a year. Earlier steps include compliance requirements issued in July and December 2025, and a memorandum dated 27 March 2026 setting testing guidelines for inverter Remote Monitoring Systems (RMS) and data loggers.

That framework specifies how the equipment talks to the government platform: communication between RMS devices and the centralised IoT platform encrypted using AES-256 over TLS or SSL, each RMS identified by its IMEI number, and machine-to-machine SIM communication for the data link.

The August notice is the compliance checkpoint on all of it — the ministry asking manufacturers to state, on the record and in writing, that they are doing what the guidelines require.

Why data residency, specifically

A rooftop inverter that reports generation to a cloud platform is producing a continuous, geolocated record of a household's electricity behaviour, at scale, across millions of homes. Aggregated, it describes generation patterns across the national grid.

MNRE's stated concern in this programme has been protecting against data leakage and cyber threats in an IoT deployment that now spans over four million systems. Requiring that the data stay on Indian infrastructure, encrypted, is a jurisdictional control: it keeps the records within the reach of Indian law and outside the reach of foreign disclosure regimes.

The warranty clause is quietly significant

Requiring the data logger's warranty to sit inside the inverter warranty closes a gap households were unlikely to notice until it mattered. Monitoring hardware has historically been treated as an accessory — sometimes warranted separately, sometimes for a shorter term, sometimes not at all.

Under a scheme where the data logger is not an optional extra but the mechanism through which generation is reported, a failed logger is a compliance problem as well as an inconvenience. Folding it into the inverter warranty means the manufacturer carries it for the same term.

What this means for a household

You have no filing to make. The obligations here fall on manufacturers and on REC. But the notice changes what you should expect from your installation.

Your system will report generation data, and that is by design. If your installer describes monitoring as an optional upgrade to be paid for separately, that does not match how the scheme is now structured.

Ask whether the data logger is covered under the inverter warranty, and for how long. Since 17 August 2026 the answer should be that it is included.

Expect the monitoring to work. A commissioned system that never appears on the portal is not a minor loose end — reporting is part of the framework the equipment was approved under.

Ask which inverter make and model is being supplied, and confirm the OEM is enlisted under the scheme. Only enlisted OEMs are subject to this notice.

Sources and references

Official government notices.

• Ministry of New and Renewable Energy — "Compliance of guidelines issued by MNRE regarding inverter level generation data and storage of inverter-level data of Rooftop Solar systems", listed under Current Notices with date 17 August 2026, mnre.gov.in. Accessed 23 August 2026.
• Ministry of New and Renewable Energy — "Draft guidelines on RMS for inverter communication devices/dongles/data-logger with Centralised Platform under PM Surya Ghar: Muft Bijli Yojana", mnre.gov.in. Accessed 23 August 2026.

Independent trade reporting.

• SolarQuarter — "MNRE Issues New Inverter RMS And Datalogger Testing Guidelines For PM Surya Ghar Rooftop Solar Scheme", 2 April 2026, solarquarter.com. Source for the 27 March 2026 memorandum date and the July and December 2025 predecessors. Accessed 23 August 2026.
• Mercom India — "India Moves to Secure Rooftop Solar Data with Stricter Inverter Protocols", mercomindia.com. Source for the AES-256 over TLS/SSL encryption, IMEI identification and India-based server requirements. Accessed 23 August 2026.
• Mercom India — "MNRE Mandates OEMs to Integrate Inverters with PM Surya Ghar Portal", mercomindia.com. Source for the machine-to-machine SIM requirement and portal integration. Accessed 23 August 2026.

A note on sourcing. The 17 August 2026 notice is listed on MNRE's Current Notices page, which is the primary record and the basis for the date and title used here. The detailed requirements — the 30-day written confirmation to REC, the 16 September 2026 deadline and the data logger warranty clause — are as reported in trade coverage of the notice. Readers needing the operative text should obtain the memorandum itself from MNRE.

ISB interpretation. The discussion of why data residency is being required, the significance of the warranty clause, and the guidance in the final section are Indian Solar Bazar's own analysis.