On-Grid Solar System in Kayathar
How TANGEDCO net metering works, who it suits, and why on-grid is the most popular rooftop choice in Kayathar — a town already contributing to the grid through its wind farms.
An on-grid solar system in Kayathar connects your rooftop panels directly to the TANGEDCO electricity supply and uses a bi-directional net meter to track what you generate versus what you consume. When your panels produce more than your home needs at that moment, the surplus flows out through the meter into the local TANGEDCO network and is credited against the units you draw in from the grid in the evening and at night. The result is an electricity bill that, for many Kayathar households, drops by up to 90% — leaving only the fixed charges and the few night-time units that exceed your credit balance.
This is a concept Kayathar understands instinctively. The large wind farms that operate in this area already feed renewable energy into the TANGEDCO grid at a wholesale level. An on-grid rooftop solar system does the same thing at a household level — your panels become a micro-generator contributing to the same network, while the net meter ensures you get fair credit for everything you put in. Solar is, quite literally, the natural next step for a town that has been contributing renewable energy to the Tamil Nadu grid for years.
On-grid is also the most cost-effective solar option for most Kayathar residents. Because there is no battery involved, the upfront cost is lower than an off-grid or hybrid system of the same capacity. And because on-grid residential systems are eligible for the PM Surya Ghar: Muft Bijli Yojana subsidy — up to ₹78,000 for a 3 kW system — the net cost after subsidy is the lowest of any solar type. For homes where the TANGEDCO supply is reasonably reliable, on-grid is almost always the right recommendation.
How TANGEDCO net metering works in Kayathar
TANGEDCO's net metering framework replaces your standard single-direction meter with a bi-directional meter that records both import (units drawn from the grid) and export (units pushed to the grid). At the end of each billing period, the net of the two is calculated:
- If you exported more than you imported, you carry forward a credit of units to offset future bills.
- If you imported more than you exported, you pay for only the net units consumed — at standard TANGEDCO tariff.
- Typically, export credits are valued at the applicable tariff rate, making net metering a genuine financial offset rather than a token gesture.
For a household that runs its heavy loads during the day — washing machines, water pumps, cooking — and minimises evening draw, a correctly sized on-grid system can bring the net consumption close to zero. Many Kayathar homeowners find that with a 3 kW system they are paying only the minimum fixed charges after a few months of operation.
Generation and savings — what to expect in Kayathar
| System size | Monthly generation | Typical daytime self-use | Export credit | Approximate bill reduction |
|---|---|---|---|---|
| 2 kW | ~260 units | ~130–160 units | ~100–130 units | ₹800–₹1,200/month |
| 3 kW | ~390 units | ~180–220 units | ~170–210 units | ₹1,200–₹2,000/month |
| 5 kW | ~650 units | ~280–350 units | ~300–370 units | ₹2,000–₹3,200/month |
These are indicative figures based on typical Kayathar irradiation and an average household load profile. Actual savings depend on your tariff slab, consumption pattern, and seasonal variation. Our site survey produces a more specific estimate for your situation.
Who benefits most from on-grid solar in Kayathar
On-grid works best when the TANGEDCO supply is relatively stable and consistent. In Kayathar, most residential areas on the main NH-44 corridor enjoy reliable grid supply. For these households:
- Families with daytime occupancy — who run fans, refrigerators, and kitchen appliances during solar-generating hours, self-consuming a large share of the output directly.
- Homes with roof-mounted water pump sets — daytime pumping aligns perfectly with solar generation, potentially eliminating the pump's electricity cost entirely.
- Small shops and commercial premises — that operate during the day and draw their main load when solar is producing.
- Households in higher TANGEDCO tariff slabs — the savings per unit are larger for consumers in the higher consumption brackets, making the financial case for on-grid even stronger.
From wind to solar — Kayathar's renewable energy continuum
Kayathar's wind farms demonstrate that this community already has a productive, ongoing relationship with renewable energy infrastructure. An on-grid rooftop solar system is the household-scale version of the same idea: clean generation, grid integration, and a financial return on the energy you produce. The on-grid solar framework through TANGEDCO gives every homeowner in Kayathar access to the same market structure — credit for what you generate, payment for what you consume — that large renewable energy operators have used for years.
The PM Surya Ghar subsidy and on-grid systems
The PM Surya Ghar: Muft Bijli Yojana applies specifically to on-grid residential solar systems. Off-grid and battery-backup systems are not eligible. The subsidy structure is:
- ₹30,000 per kW for the first 2 kW of capacity.
- ₹18,000 for the third kilowatt.
- Maximum subsidy: ₹78,000 for any system of 3 kW or larger.
The subsidy is disbursed directly to the homeowner's bank account after installation and net-metering approval are verified through the national portal. Green Point Solar manages the full portal registration and documentation process as part of our standard service — you do not need to navigate this separately.
Why Green Point Solar for on-grid solar in Kayathar
Our process for on-grid installation in Kayathar
- Free survey: roof assessment, shading check, consumption analysis from your TNEB bills.
- System design: optimal panel layout, inverter sizing, and net-metering cable route planned.
- Written proposal: full specifications, generation estimate, pricing before and after subsidy.
- Installation: typically one to two days for a residential system; our in-house team handles everything.
- Net-metering application: submitted to TANGEDCO with all required documents; we attend the inspection.
- Subsidy registration: PM Surya Ghar portal filed and tracked; subsidy disbursed to your account after approval.
Explore on-grid and related solar options
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