MNRE Inverter Data Localization Rules for PM Surya Ghar

Qbits warranty and service terms: Qbits public datasheets describe an expandable warranty but do not define a universal duration, remedy, registration deadline, service SLA, or exclusions. Obtain the current written terms for the exact model and sale before relying on a headline claim.

ALMM and inverter compliance: MNRE’s current ALMM page publishes solar PV module and cell lists, not an inverter list. Verify the inverter’s exact model documents and applicable scheme or DISCOM requirements separately.

An EPC running rooftop volume under PM Surya Ghar usually has one inverter brand written into every open quotation. That brand is a line in the bill of quantities. It is also a make and model on the DISCOM net-metering application, and a serial number on the subsidy claim. The Ministry of New and Renewable Energy has now issued an office memorandum that can remove some of those brands from the scheme inside 30 days. The memorandum is addressed to inverter manufacturers. The commercial loss, if a manufacturer does not respond, lands on the installer holding the quotation.

Direct answer. MNRE requires that all application servers, monitoring and control servers, cloud platforms, and the real-time data associated with rooftop solar systems under PM Surya Ghar Muft Bijli Yojana reside within India, in an encrypted and protected environment. Every inverter OEM must send a written confirmation in the prescribed Annexure-I format to REC, copied to MNRE, within 30 days of issue. An OEM that misses that window is not permitted to install its systems on rooftop solar installations under the scheme. OEMs must also fold datalogger warranty into the inverter warranty and push daily generation data to the national portal through a uniform interface.

This guide is written for the EPC contractor or PM Surya Ghar registered vendor running rooftop volume across one or more DISCOM territories. It does not summarise the scheme back to you. It covers which of your open projects carry risk, what to ask your inverter supplier this week, and what happens to a net-metering file if the inverter make has to change after submission.

What the Memorandum Actually Requires

Strip out the preamble and there are four operative requirements. Each one lands on a different part of the OEM’s business, which is why some manufacturers will file inside the window and some will not.

Data residency. Application servers, monitoring and control servers, cloud platforms, and the associated real-time data for rooftop systems under the scheme must be stored within India’s geographical boundaries, in an encrypted, secure and protected environment. For an OEM running monitoring out of an offshore cloud region, this is not a settings change. It is a migration of the monitoring stack into Indian data centres, with the account structure and IT re-architecture that implies.

Written confirmation. Every inverter manufacturer must send a written confirmation to REC, copied to MNRE, in the prescribed Annexure-I format, within 30 days of the memorandum’s issue. The confirmation covers adherence to the earlier secure communication guidelines as well as the data residency position.

Datalogger warranty inside the inverter warranty. The datalogger can no longer carry a shorter separate term than the inverter it reports on. This is a quieter change than data residency, but it has a real service-cost consequence for the OEM, and it removes a common gap that installers have been absorbing on call-backs.

Daily generation data to the national portal. OEMs must push daily cumulative generation data through a uniform interface so the scheme has a vendor-neutral view across the installed base.

The Compliance Chain Behind This One Memorandum

This memorandum did not arrive on its own. It closes a sequence that has been building since mid 2025, and reading it without the chain makes it look more sudden than it is.

The pattern is straightforward. MNRE spent a year building the technical framework, opened a testing platform so manufacturers could prove conformance, and has now attached a filing deadline with an exclusion behind it. A manufacturer that engaged with the testing platform in the spring has a short administrative task in front of it. A manufacturer that did not has a migration project and 30 days.

Why MNRE Is Forcing Data Residency Now

The scale argument comes first. PM Surya Ghar targets 10 million rooftop systems totalling roughly 30 GW, according to pv magazine, 2025. Ten million grid-connected devices that accept remote commands is a different security object from ten million appliances.

The stated concern is control, not privacy. MNRE has noted that inverter communication modules transmitting data outside India create a risk of unauthorised control, and that a large installed base communicating with third-party OEM servers could in principle be used to manipulate inverter operation. Coordinated manipulation across a distributed fleet is a grid-stability question, which is why the ministry has framed this as energy sovereignty rather than data protection.

The trigger was external. Reporting through 2025 covered the discovery in the United States of communication components in imported inverters that did not appear in the product literature. Whatever one makes of that specific episode, it changed how regulators everywhere look at a device that sits behind a meter, holds a cellular link, and can be told to change its output.

There is a domestic-industry dimension too. Charusmita, director at Statcon Energiaa, argued in pv magazine, 2025 that servers, remote monitoring, and firmware should all be hosted in India for national security reasons, and pressed for the requirement to reach systems already installed. The retrospective question is still open. This memorandum is written forward, not backward.

The Architecture Your Supplier Has to Already Run

Four things have to be true of an inverter brand for it to survive this cleanly. It is worth knowing what they are, because “we are compliant” from a sales contact is not an answer you can put on a project file.

Indian-hosted monitoring. The servers that receive, store, and serve the inverter data sit in India. This includes the backend behind the OEM’s consumer app, not just an export endpoint built for the regulator.

M2M connectivity on the communication device. Dongles and dataloggers use M2M SIMs rather than depending on the customer’s home Wi-Fi. This is the single biggest practical change for residential installs, where a Wi-Fi dropout has always been the most common monitoring complaint on the service line.

A tested RMS and datalogger. The remote monitoring system and datalogger have been through the testing framework MNRE set out in March 2026 and can connect to the centralised platform. Untested hardware that happens to work is not the same as conformant hardware.

A uniform reporting interface. Daily cumulative generation reaches the national portal in the prescribed format, without the EPC or the homeowner doing anything.

The Myth: This Is a Live Telemetry Mandate Like PM KUSUM

The most common misreading in the market is that every rooftop system now has to stream live data. It does not, and getting this wrong leads to bad connectivity decisions on site.

Industry reporting on the scheme’s integration work indicates that daily submission of generation data plus historical aggregates satisfies the current requirement. PM KUSUM is the comparison people reach for, and it is the wrong one. Agricultural pump projects under that scheme have generally required live data at short intervals over a persistent connection, because the operational question there is whether the pump is running right now.

The rooftop question is different. The scheme wants to know what the installed base generated, at national scale, on a daily basis. A daily upload tolerates a few hours of poor cellular coverage. A live stream does not.

This matters for EPCs working in weak-signal areas. Saurabh Marda, co-founder of Freyr Energy, raised connectivity coverage in weak-signal areas as one of the open issues when the draft guidelines were published, reported by pv magazine, 2025. A daily-batch requirement is a far more forgiving design for those sites than a streaming one, and it is worth knowing before you quote a signal booster nobody needs.

Where the Risk Actually Sits for an EPC

The regulatory obligation is the manufacturer’s. Every commercial consequence is yours. That asymmetry is the whole reason this memorandum belongs on your desk and not just your supplier’s.

Open quotations. A quotation naming an inverter brand that later fails to file is a quotation you cannot honour under the scheme. If you have quoted on thin margin, a forced substitution to a different brand can move the BOQ cost without any ability to reprice a signed order.

Submitted DISCOM files. A net-metering application carries a specific make and model. If the inverter changes after submission, the change has to be recorded, and the practical cost is time inside a queue you have already waited in. The net metering approval timeline is slow enough without a mid-file equipment change.

Subsidy claims in progress. Serial numbers on a claim tie to a specific unit from a specific manufacturer. Anything that disturbs the equipment identity on a claim in progress is worth avoiding, particularly given the portal’s automatic flagging of repeated serial numbers.

Stock on the shelf. Inventory of a brand that does not file is not scrap, because non-scheme work still exists. It is capital sitting in the wrong product for your dominant channel.

Customer trust. The homeowner does not distinguish between a regulator excluding a brand and their installer choosing badly. As an empanelled vendor under PM Surya Ghar, you carry the relationship and the explanation.

Six Questions to Send Your Inverter Supplier This Week

Send these in writing and keep the reply. A verbal assurance from a regional sales manager is not something you can put in front of a DISCOM or a customer.

If a supplier cannot answer questions one and two within a few days, treat that as information. An OEM that engaged with the testing platform earlier in the year will have both answers ready.

The Cost Question the Memorandum Does Not Answer

Moving connectivity from household Wi-Fi to an M2M SIM introduces a recurring cost that did not exist before, and nothing in the framework says who carries it.

The most concrete figure in public discussion came from Saurabh Marda of Freyr Energy, who raised the question of who absorbs an M2M SIM data cost he put at ₹18,000 per system across a 10-year horizon, reported by pv magazine, 2025. He also warned that smaller installers and price-sensitive segments risk being disproportionately affected. Treat that number as one practitioner’s estimate rather than a settled industry figure, because the answer depends entirely on tariff and data volume.

There are only three places that cost can land. The OEM absorbs it and prices it into the unit. The EPC absorbs it and prices it into the system. Or the customer is asked for a recurring payment years after an installation that was sold as maintenance-light.

The third option is the one that damages the category. A homeowner who bought a rooftop system on a bill-savings argument does not expect a connectivity invoice in year four, and the installer who sold the system is the person who receives that phone call. Get your supplier’s position on this now, and if the cost lands with you, put it in the proposal rather than discovering it later.

What Changes in Your Project Documentation Set

Three documents in a standard project file are affected, and the fix in each case is a checking step rather than a new form.

The net-metering application. Nothing on the form changes. What changes is the cost of getting the inverter make wrong on it, because a substitution mid-queue is expensive in time. Lock the inverter selection before submitting rather than after, a discipline worth applying to the whole net metering application process.

The customer handover pack. The datalogger warranty term has changed and should be stated correctly. If your handover documents describe a separate shorter term for the communication device, they are now out of date.

One addition is worth making. Keep a compliance evidence folder per OEM you carry, holding the filing confirmation, the tested part numbers, and the warranty document. When a DISCOM engineer or a customer asks a pointed question, the difference between a two-minute answer and a two-week answer is whether that folder exists.

What Most EPCs Will Get Wrong Here

The predictable mistake is not ignoring the memorandum. It is overreacting to it.

The second mistake is treating this as purely a Chinese-import story and assuming an Indian-badged brand is automatically clear. The requirement is about where the servers sit and whether the OEM filed, not where the enclosure was assembled. Plenty of Indian-badged products have run monitoring out of an offshore backend, sometimes the original manufacturer’s. Ask the question of every supplier, including the domestic ones, including your primary.

The third mistake is quieter and more expensive. It is assuming your existing datalogger inventory stays compliant. If you have been fitting a cheaper third-party dongle in place of the OEM’s tested module, that substitution now breaks the chain the OEM certified, and it also sits outside the warranty consolidation the memorandum requires. Check what your crews are actually installing, not what the specification says they install.

Where Qbits Sits on This

This page makes no claim about Qbits’ data-residency position, Annexure-I filing or datalogger warranty, because none is established in the public material it relies on. That is exactly the kind of topic where vague assurance is useless to an installer, so ask for it in writing using the six questions above.

Contact Qbits with the exact model, site inputs and documents relevant to the request. Confirm the responsible party, deliverable, fees and response time after submission.

Conclusion

An office memorandum addressed to manufacturers has become an EPC scheduling problem, because the penalty is supply-side exclusion and the exposure is on whoever holds the open quotation. The work in front of you is verification, not procurement.

• Send the six questions to every inverter supplier you carry this week, and keep the written replies on file.
• Do not switch brands speculatively inside the window. Wait for filing positions to become visible, then decide.
• Lock inverter selection before net-metering submission on every new project until the market position is clear.
• Check what your installation crews are actually fitting as a datalogger, not what the specification says.
• Verify the operative dates and the current filing position with REC and MNRE directly. Rules under this scheme have changed repeatedly, and no summary, including this one, is a substitute for the source document.

Contact Qbits with the exact model, site inputs and documents relevant to the request. Confirm the responsible party, deliverable, fees and response time after submission.