What is the total solar subsidy available in Chennai?

Homeowners in Chennai qualify for the Central PM Surya Ghar subsidy: ₹30,000 for 1 kW, ₹60,000 for 2 kW, and ₹78,000 for 3 kW and above. In addition, state-specific incentives such as UPNEDA top-up (in UP cities) or Delhi GBI (in Delhi) are credited automatically.

How much can a 5 kW solar plant save monthly in Chennai?

With 300 sunny days and an average tariff of ₹7.3/unit, a 5 kW system in Chennai generates approximately 650 to 700 units monthly, saving roughly ₹4,745 to ₹5,110 per month.

Chennai, Tamil NaduTANGEDCO Grid

Rooftop Solar Subsidy & Feasibility in Chennai

Coastal protection anodized aluminum structures and IP66 inverters recommended by our advisors to withstand marine humidity in Adyar, ECR, and OMR.

Solar Irradiance

5.2 kWh/m²/day

300 Sunny Days

Average Power Tariff

₹7.3 / Unit

TANGEDCO Slab Rate

Payback Period

3.4 Years

Fast Capital Breakeven

Central CFA Subsidy

Up to ₹78,000

Direct DBT Transfer

Calculate Solar Savings for Your Chennai Rooftop

Pre-calibrated for TANGEDCO tariffs (₹7.3/unit) and local sun hours.

Configure Your Property

Live MNRE PM Surya Ghar calculations

2026 Rules

Premises Category

State & Grid Jurisdiction

Avg Tariff: ₹7.2/unit•Sun Hours: 5 hrs/day

Electricity Consumption

Average Monthly Bill:

₹1,000₹15,000₹30,000₹50,000+

Sanctioned Electricity Load4 kW

Mentioned on your DISCOM electric bill

Shadow-Free Rooftop Area400 sq ft

~85 sq ft needed per kW capacity

Your shadow-free roof area (400 sq ft) accommodates up to 4.7 kW. Sizing adjusted accordingly.

DISCOM net metering is capped at 100% of your sanctioned load (4 kW). We recommend applying for a load enhancement or sizing up to 4 kW.

Unbiased Sizing

4.7 kWp Rooftop Solar Plant

Generates ~606 units/month • Requires 459 sq ft terrace

Capex Payback

3.4 Years

Free power thereafter

Benchmark Cost

₹2,53,800

Tier-1 DCR

Central CFA

-₹78,000

Direct DBT

State Top-Up

₹0

N/A

Net Investment

₹1,75,800

After all subsidies

Annual Savings

₹52,356 / yr

25-Yr Cumulative

₹20,34,998

Lifetime CO2 Offset

141 Tonnes

Net Capex Breakeven at Year 3.4Total Profit: ₹18,59,198

Local DISCOM Protocol

Step-by-Step TANGEDCO Solar Net-Metering Process

Standard turnaround timeline: 30 working days under MNRE single-window protocol.

Step 1: National Portal Application

Step 2: Technical Feasibility Approval (TFR)

TANGEDCO reviews distribution transformer capacity and grants approval within 7–10 days.

Step 3: Installation & Earthing

Mounting of DCR TOPCon/Mono PERC modules, inverter, and 3 chemical earth pits as per CEA standards.

Step 4: Bi-Directional Net Meter & DBT

Testing by TANGEDCO Junior Engineer, net-meter energisation, and automatic DBT credit within 30 days.

Priority Solar Feasibility Coverage Across Chennai:

PIN 600001PIN 600028PIN 600040PIN 600096and all municipal wards

Chennai Solar Advisory FAQs

Under Tamil Nadu Generation and Distribution Corporation, consumers can install rooftop solar up to 100% of their sanctioned load. A bi-directional net meter is installed to record both imported and exported units. Excess generation in summer is banked on your bill to offset winter consumption.