- MNRE released RMS & datalogger testing guidelines on 27 March 2026.
- RMS = Remote Monitoring System for rooftop solar; the datalogger pushes generation data to the platform.
- Dataloggers must meet testing and device authentication (e.g. IMEI-based identity — verify the exact method).
- Before buying, check the datalogger is tested, authenticated and platform-ready with your inverter.
- Interim platform status and exact specs are verify-current — re-read the latest MNRE circular.
- We re-verify this page every 30 days against MNRE/PIB.
MNRE has tightened how rooftop solar plants are watched. On 27 March 2026 it released testing guidelines for the Remote Monitoring System (RMS) and the datalogger that feeds it. For EPCs, this changes the kit you buy and the checks you run before you commit to an inverter or a datalogger model.
This page explains the rule in plain words and gives you a checklist to use at procurement. One caution up front: the exact required specs and the platform status are moving targets. Always re-read the latest MNRE circular before you buy. We label every figure you must verify.
What an RMS and a datalogger actually are
An RMS is a Remote Monitoring System — the setup that lets the scheme watch a rooftop solar plant without sending someone to the roof. The datalogger is the small device at the plant that records how much power the system makes and sends that data on.
Think of it this way. The datalogger reads the inverter, then pushes the numbers to a central monitoring platform. The platform shows whether a plant is real, installed, and producing power. That is the whole point: confirm a plant works without a manual visit.
What the 27 March 2026 guidelines require
The 27 March 2026 guidelines set out how a datalogger must be tested and authenticated before it is trusted to send data. In short, the device has to prove it is genuine, pass a testing protocol, and push generation data reliably to the monitoring platform.
We describe the requirements as categories, not exact numbers, on purpose. The guideline names testing, device authentication and data-push expectations. The precise values — data intervals, the exact authentication method, the certifying agency — sit in the circular and can change. Read the categories below, then confirm the live figures in the MNRE document.
The RMS & datalogger compliance checklist
Use this as a buying and commissioning checklist. It lists what each item is, the spec category, who certifies it, and its status. Treat any specific value as verify-current against the circular.
Caption: RMS & datalogger checklist for PM Surya Ghar. Spec categories are deliberate, not exact values — verify current — re-read the latest MNRE circular; interim platform status and required specs may have updated since the 27 Mar 2026 release. Source: MNRE guidelines, 27 March 2026.
Device authentication and IMEI explained
Device authentication gives each datalogger a unique identity so the platform trusts its data. The guidelines point to identity-based authentication, often described as IMEI-based, where the device carries a hardware ID like a phone does.
Why this matters: a unique IMEI ties the data to one real device. That stops a vendor from faking readings or pointing many sites at one logger. Confirm the exact authentication method in the circular — treat IMEI-based authentication as a verify-current detail, not a settled fact, since the method can be refined after release.
Pushing generation data to the monitoring platform
The datalogger must push generation data to the monitoring platform so the scheme can see live output. This is the heart of the rule: a plant that does not report cannot be confirmed remotely.
In practice the device sends readings — such as energy generated — to the platform on a set schedule. The exact fields and how often it sends are set in the circular and can change. Make sure your chosen datalogger can be configured to whatever the live guideline asks for, and that your installer sets it up at handover.
What EPCs must buy and check before procuring kit
Before you buy inverters or dataloggers in bulk, check four things: testing, authentication, data push, and inverter compatibility. Getting written confirmation from the manufacturer on each saves you from dead stock.
- Testing proof — ask for the testing certificate under the MNRE guideline, not just a brochure claim.
- Authentication — confirm the device carries the required identity (e.g. IMEI-based — verify the method).
- Data push — confirm it can send generation data to the monitoring platform at the required interval.
- Inverter match — confirm your inverter model connects cleanly to the datalogger you plan to fit.
When you pick the inverter and panels together, run the same compliance lens across both. Our guide on choosing panels and inverters for compliance walks through that side of the procurement decision.
How it affects subsidy and commissioning
The datalogger rule sits close to commissioning because the scheme uses monitoring data to confirm a plant is real and working. If a logger fails testing or cannot push data, the job can stall at inspection — and a stalled job means a stalled subsidy.
We will not overstate the link. Whether monitoring is a hard gate on the subsidy, and at which step, is something you must confirm in the live MNRE and National Portal guidance. Treat the connection as real but verify-current, and plan your commissioning so the device is fitted and reporting before inspection.
Testing and certification — who signs off
A compliant datalogger is one that has passed the testing protocol set out in the MNRE guideline and carries proof of it. Do not accept a verbal claim; ask for the certificate and check it names the designated test agency.
The exact certifying body and the test details live in the circular and can be updated. So when a supplier hands you paperwork, match it against the latest guideline rather than an older copy. Confirm the certifying agency as verify-current before you rely on it for a bulk order.
Interim platform status (verify before you commit)
The monitoring platform status is best treated as interim, which is why we flag it loudly. Verify current — re-read the latest MNRE circular; interim platform status and required specs may have updated since the 27 Mar 2026 release.
What this means for you: do not lock a large datalogger order to an exact platform spec that might shift. Buy devices that can be reconfigured, keep your manufacturer close, and re-check the guideline before each big purchase. A flexible device protects you when the platform moves.
How to avoid buying non-compliant kit
The simplest way to avoid non-compliant kit is to buy only against the current circular and demand written proof. A few habits keep you safe as the rule settles.
- Buy small batches first until you are sure a datalogger model holds up at inspection.
- Get manufacturer confirmation in writing on testing, authentication and data push.
- Match every datalogger to your inverter models before you standardise on one.
- Re-read the circular before each bulk order — specs and platform status can change.
- Keep certificates on file so you can show proof fast at a joint inspection.
Sites still fail at handover for avoidable reasons. Our note on joint inspection failures covers the other things inspectors flag, so you can clear them in the same pass.
How SuryaHub helps you stay on top of the rule
A new rule is easy to miss when a job has dozens of steps. SuryaHub keeps each datalogger, its testing proof and platform onboarding next to the rest of the work, and runs every job through DISCOM and net-metering steps and procurement and inventory so a missing device does not stall commissioning. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL, and AI features are on the roadmap. Figures here are scheme facts, not guarantees.
Track every device and compliance step
See how SuryaHub keeps dataloggers, proofs and jobs in one place.
Related guides
Frequently asked questions
What is an RMS and a datalogger in PM Surya Ghar?+
An RMS is a Remote Monitoring System that watches a rooftop solar plant from afar. The datalogger is the device that records generation data and pushes it to the monitoring platform. Together they let the scheme confirm a plant is real and producing power without a site visit.
When did MNRE release the RMS and datalogger testing guidelines?+
MNRE released the RMS and datalogger testing guidelines on 27 March 2026. The guidelines set out testing, device authentication and data-push expectations for rooftop solar. The exact required specs and interim platform status may have updated since release, so EPCs should re-read the latest MNRE circular.
What is IMEI-based device authentication for a datalogger?+
IMEI-based device authentication gives each datalogger a unique hardware identity so the platform knows the data is genuine. The IMEI ties the data to one real device, which blocks spoofed or duplicated readings. Treat the exact authentication method as verify-current and confirm it in the MNRE circular.
Does the datalogger rule affect my PM Surya Ghar subsidy?+
The datalogger rule can affect commissioning and the subsidy because the scheme uses monitoring data to confirm a plant works. If a non-compliant datalogger fails testing or cannot push data, the job may stall at inspection. Confirm current subsidy linkage in the latest MNRE and National Portal guidance.
What should EPCs check before buying inverters and dataloggers?+
EPCs should check that the datalogger is tested under the MNRE guideline, supports the required device authentication, and pushes data to the monitoring platform. They should also confirm the inverter is compatible with the datalogger. Get written confirmation from the manufacturer before procuring stock.
Is the monitoring platform final or still interim?+
The monitoring platform status is treated as interim, so SuryaHub flags it as verify-current. The platform and required specs may have updated since the 27 March 2026 release. Re-read the latest MNRE circular and the National Portal before you onboard devices or commit to a datalogger model.
How does SuryaHub help with RMS and datalogger compliance?+
SuryaHub tracks each datalogger, its testing proof and platform onboarding alongside the rest of the job, so a missing device does not stall commissioning. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL, and AI features are on the roadmap, not guarantees.
Sources & references
The 27 March 2026 guidelines, the monitoring platform and the grid rules come from primary government sources. Specs and platform status change, so always confirm the current circular before you buy or commission.
- Ministry of New & Renewable Energy (MNRE) ↗
Source of the 27 March 2026 RMS and datalogger testing guidelines.
- National Portal for PM Surya Ghar ↗
Scheme process, monitoring platform and vendor rules.
- Central Electricity Authority (CEA) ↗
Grid-connection, metering and electrical-safety regulations.
Written by the SuryaHub team · reviewed against MNRE, National Portal & CEA sources · updated 19 June 2026.
Method: This is a regulatory, high-refresh page. The 27 March 2026 guideline summary, spec categories and platform status are taken from the government sources above. Verify current — re-read the latest MNRE circular; interim platform status and required specs may have updated since the 27 Mar 2026 release. We re-verify every 30 days against MNRE/PIB. SuryaHub is pre-revenue; only Suryantra Energy and RGESPL are real pilots, and AI features are roadmap.
Change log: 19 Jun 2026 — first published.