India Crossed 140 GW of Solar in January 2026. Here’s How Much of It Is Flying Blind.

The Milestone That Made Headlines — And the Problem Nobody Is Talking About

January 2026. India crossed 140 GW of installed solar capacity. The Ministry of New and Renewable Energy (MNRE) confirmed the number. Industry leaders celebrated. Prime Minister schemes like PM Surya Ghar and PM-KUSUM were cited as driving forces. The country’s renewable energy story had never looked more compelling.

But here’s a question that rarely makes the press: of those 140 GW of solar panels silently baking under the Indian sun — how many are actually performing at their designed efficiency? And who is watching?

The honest answer is uncomfortable. A significant portion of India’s solar infrastructure — from rooftop systems in rural Rajasthan to utility-scale plants in the Thar desert — is operating without real-time string-level monitoring. No alerts. No performance data. No way to know if a string failure is quietly bleeding watts, day after day, undetected.

This is not an installation problem. India has become extraordinary at installing solar. This is a monitoring problem — and it is getting bigger every single month.

The Numbers Behind the Milestone

Before understanding the gap, it helps to understand the scale of what India has built.

According to official MNRE and Solar Quarter data (February 2026):

India is adding roughly 4 to 5 GW of solar every single month. Each new gigawatt represents thousands of panels, hundreds of inverters, and dozens of strings that need to be monitored — continuously, accurately, and ideally without expensive underground cabling.

The installation machine is running at full speed. The monitoring infrastructure has not kept up.

What “Flying Blind” Actually Costs

When a solar plant loses performance without anyone knowing, the financial damage is slow, invisible, and cumulative. Industry data paints a stark picture.

According to the IEA Photovoltaic Power Systems Programme (IEA-PVPS), soiling alone is the single most influential factor impacting solar system yield after irradiance. Globally, soiling causes an estimated 3–5% annual loss in PV energy production. In India’s arid zones — Rajasthan, Gujarat, parts of Maharashtra — soiling rates can climb significantly higher, with dust accumulation observed at rates up to 0.5% per day in extreme cases.

But soiling is just one piece. Unmonitored plants also suffer from:

• String-level failures— a single failed string in a central inverter plant can go undetected for weeks. The inverter keeps producing power from healthy strings, masking the underperformance entirely.
• Inverter degradation— without performance benchmarks per string, slow inverter degradation is invisible until it becomes catastrophic.
• Module mismatch losses— as panels age unevenly, mismatch losses build up. Without string-level data, there is no way to identify which panels are dragging performance.
• Cable and connection failures— particularly in ageing plants where RS-485 communication cables corrode or break underground, cutting off data flow entirely.

For a 1 MW solar plant generating at an average of ₹3.50/kWh (a conservative tariff), a sustained 5% performance loss translates to roughly ₹5–6 lakh of invisible revenue loss per year. Scale that across India’s 107 GW of ground-mounted capacity — even assuming only a fraction of plants are poorly monitored — and the cumulative financial leakage runs into thousands of crores annually.

Why Monitoring Has Lagged Behind Installation

The gap between India’s installation pace and its monitoring infrastructure is not an accident. It has structural causes that are worth understanding.

1. The RS-485 Cable Problem

For years, the industry standard for solar plant communication was RS-485 wiring — a cabled data backbone connecting inverters and string monitoring boxes to a central data logger. The problem? RS-485 cables are expensive, vulnerable to corrosion, difficult to retrofit in operational plants, and completely impractical in remote or geographically complex terrain. A plant that was built five years ago with RS-485 connectivity and has since experienced cable degradation often loses monitoring capability entirely — and fixing it requires digging, significant expenditure, and plant downtime.

2. The Old Plant Problem

A large share of India’s 140 GW was installed in 2019–2023, before string-level monitoring became a common specification in tenders. These plants were built for central inverter architectures. Adding string-level monitoring retroactively has traditionally required either replacing inverters (prohibitively expensive) or running new cabling (operationally disruptive). For many asset owners, it simply hasn’t happened.

3. The Remote Location Problem

India’s largest solar parks — Khavda in Gujarat, Bhadla in Rajasthan — are located in extremely remote areas. Cellular connectivity is unreliable. Running fibre is impractical. Traditional monitoring solutions that rely on internet connectivity fail here, not occasionally, but routinely.

4. The O&M Cost Pressure

Operations and maintenance budgets for Indian solar plants are notoriously lean. EPC contractors and O&M teams are often managing enormous capacities with small teams. Without automated monitoring and alerts, they rely on periodic manual inspection — which means faults are discovered days or weeks after they occur, not in real time.

The Policy Pressure Is Now Making Monitoring Unavoidable

Here is where the story changes — and changes fast.

India’s government has spent the last 18 months building a regulatory architecture that makes data, traceability, and performance accountability central requirements for solar assets. Three developments in particular are directly relevant to monitoring.

ALMM List-II: The Cell Traceability Mandate (June 2026)

Starting June 1, 2026, all solar projects commissioned under government schemes must use solar cells from ALMM (Approved List of Models and Manufacturers) List-II — domestically manufactured, certified cells. Every module must be traceable via a unique 16-digit certificate on the MNRE DCR Verification Portal. This is not just a procurement requirement. It is the beginning of a performance-accountability culture where the government expects to know, at a granular level, what is installed and how it is performing.

ALMM List-III: Wafers Are Next (June 2028)

In March 2026, MNRE announced the extension of the ALMM framework to solar wafers. From June 2028, modules used in government-backed projects must be manufactured using cells made from ALMM-listed wafers. India is building a full supply chain traceability system — and the logical next step in that system is operational performance traceability, not just procurement traceability.

PM Surya Ghar and PM-KUSUM: The Scale Challenge

The PM Surya Ghar scheme, with its ₹75,021 crore outlay, is targeting 30 GW of distributed rooftop solar across one crore households by FY 2026-27. PM-KUSUM, extended to March 2026 with ₹34,422 crore in support, covers 3.5 million solar pumps and 20,000 MW of decentralised solar plants. These programmes are adding millions of new solar assets across the country — many in rural and remote areas where O&M infrastructure is minimal and where monitoring, if it exists at all, is rudimentary.

The government has invested in building these assets. Protecting and maximising their return requires knowing whether they are actually working.

The Monitoring Gap by the Numbers

To understand the scale of the problem, consider the following estimates:

India’s 107+ GW of ground-mounted utility-scale solar was built largely between 2018 and 2025. Industry estimates suggest that a substantial portion of plants built before 2022 — particularly those using central inverters and RS-485 communication — either have degraded monitoring infrastructure or operate with inverter-level (not string-level) visibility. String-level monitoring, which allows operators to isolate underperforming strings and take targeted maintenance action, has only become a standard specification in more recent utility-scale tenders.

For distributed rooftop solar (24+ GW), the monitoring gap is even more pronounced. Most PM Surya Ghar beneficiaries — households receiving subsidies for 1–3 kW rooftop systems — have no string monitoring at all. They see a bill reduction, and they assume everything is working. Unless a panel physically fails and stops producing entirely, silent performance degradation goes undetected indefinitely.

For PM-KUSUM Component B and C solar pumps — off-grid installations in areas with limited grid access and no internet — the gap is almost total. These systems are installed, handed over, and essentially monitored through periodic manual inspection, if at all.

What Real-Time, Wireless Monitoring Changes

This is where the architecture of a solution like aALoK by Dyulabs becomes directly relevant to India’s 280 GW challenge.

The two products within the aALoK system — WRMS (Wireless Remote Monitoring System) and SLMS (String Level Monitoring System) — were designed specifically to address the three structural barriers that have kept Indian solar plants blind: cabling cost, geographic remoteness, and retrofit difficulty.

WRMS — Wireless Data Logging for New and Existing Plants

WRMS operates on RF (Radio Frequency) technology, eliminating the need for underground RS-485 cables entirely. With reliable communication up to 3 km, it enables seamless data transmission across large ground-mounted plants without physical data infrastructure. For plant developers facing high RS-485 cable costs and the operational risk of underground cable failure, WRMS is a cable-free alternative that works in terrain where traditional wired monitoring is impractical or prohibitively expensive. It supports multi-device integration, real-time monitoring, and API integration with existing EMS or SCADA platforms.

SLMS — Patented String-Level Monitoring for Retrofit Scenarios

SLMS is built for the old plant problem. For utility-scale plants installed with central inverters 3–7 years ago — plants that were never designed for string-level visibility — SLMS enables retrofitted string monitoring without downtime, without new cabling, and without replacing inverters. Its air-gap design means installation is non-invasive. RF communication of up to 5 km means it works in remote locations where cellular coverage is absent. For asset owners and O&M contractors trying to add a layer of operational intelligence to ageing infrastructure, SLMS is a retrofit solution that did not exist in the Indian market until now.

The combined architecture — a Master node receiving data from multiple Child RF nodes, transmitting to a central monitoring platform — is scalable to very large plant sizes and customisable through API and EMS integration for operators who need to merge aALoK data with existing operational systems.

The Business Case: Monitoring Pays for Itself

For any plant owner or O&M contractor evaluating whether to invest in string-level monitoring, the financial case is straightforward.

Consider a 5 MW solar plant generating at ₹3.50/kWh, running at a capacity utilisation factor of 22% (approximately 1,930 hours per year). Annual generation: approximately 9.65 million units. Annual revenue: approximately ₹3.38 crore.

A 5% performance loss — well within what undetected string failures, soiling, and mismatch can cause — represents a revenue leakage of approximately ₹16.9 lakh per year.

A 10% performance loss — achievable in an unmonitored plant with multiple failed strings and heavy soiling — represents ₹33.8 lakh per year of undetected underperformance.

The investment in wireless string-level monitoring systems — systems that can detect and alert on these losses in real time — is recoverable in months, not years, when measured against the revenue protection they provide.

What India’s 280 GW Target Actually Requires

India’s National Electricity Plan requires the country to reach 280 GW of solar PV capacity by 2030. The country has 140 GW today. It needs to double — in four years.

But doubling installed capacity while leaving existing capacity poorly monitored is not a renewable energy strategy. It is a renewable energy liability. Every gigawatt added to India’s grid without reliable performance monitoring is a gigawatt that may be underdelivering against its design specifications — silently, continuously, and at scale.

The government’s instinct — expressed through ALMM, DCR mandates, and the MNRE DCR Verification Portal — is correct: traceability and accountability must run through the entire solar value chain. That instinct needs to extend beyond procurement and into operations.

String-level, wireless, real-time monitoring is not a premium add-on for large utility-scale developers. It is the infrastructure layer that makes India’s solar investment resilient, auditable, and genuinely productive.

Conclusion: The Second Half of India’s Solar Story

The first half of India’s solar story was about building: gigawatts added, milestones crossed, targets set and revised upward. That story will continue. India will almost certainly reach 280 GW before 2030.

The second half of India’s solar story is about performance: whether those gigawatts are actually delivering at design capacity, whether faults are caught in hours rather than weeks, whether the ₹75,000 crore invested in PM Surya Ghar generates the full return that Indian households and the Indian grid deserve.

India crossed 140 GW in January 2026. The question for 2026 and beyond is not how many more gigawatts get added. The question is: how much of what is already installed is flying blind — and how long can we afford to leave it that way?

About aALoK by Dyulabs

aALoK is Dyulabs’ solar monitoring platform — a wireless, cable-free system designed for both new and retrofit solar installations across India. The platform includes WRMS (Wireless Remote Monitoring System) with RF communication up to 3 km, and SLMS (String Level Monitoring System) with patented wireless technology and 5 km range for string-level visibility on older central inverter plants. aALoK supports API and EMS integration, scalable Master-Child RF architecture, and zero-downtime installation.

To learn more or request a technical consultation, visit dyulabs.com/solar-monitoring-solution/aalok-solar-monitoring-system or contact the Dyulabs team directly.

Sources: MNRE official data, SolarQuarter (Feb 2026), IEA-PVPS Task 13 Soiling Report, Mercom India (March 2026), pv-magazine (March 2026), InfoLink Consulting, SolarQuarter India capacity data (Jan 2026)