Frequently Asked Questions

For individual residential houses in Tamil Nadu, the Central Financial Assistance (CFA) is structured in slabs: ₹30,000 for a 1 kW system, ₹60,000 for a 2 kW system, and capped at a maximum of ₹78,000 for systems of 3 kW up to 10 kW. Housing societies/RWAs can get assistance for common facility lighting up to 500 kW at ₹18,000 per kW.

Once the solar rooftop system is installed and inspected by TANGEDCO section officers, the bi-directional net meter is commissioned and a Joint Commissioning Certificate (JCC) is uploaded to the National Portal. The Central Government transfers the subsidy via Direct Benefit Transfer (DBT) directly into your linked bank account typically within 30 to 45 working days.

No. The Ministry of New & Renewable Energy (MNRE) strictly mandates Domestic Content Requirement (DCR) for all subsidized residential systems. Both the solar cells and modules must be manufactured in India. Agasthyaa Bharat Green Power exclusively uses MNRE ALMM-approved DCR modules for all subsidy projects.

TANGEDCO regulations state that your grid-connected rooftop solar capacity cannot exceed 100% of your sanctioned connected load. For example, if your connection is sanctioned for 3 kW, you can install up to 3 kW solar. If your consumption warrants a 5 kW solar system, we assist you in submitting a load enhancement application to TANGEDCO prior to net meter clearance.

Standard on-grid (grid-tied) inverters automatically shut down within milliseconds during a grid outage as a mandatory safety mechanism (anti-islanding) to protect line wiremen working on repair lines. If you need continuous power during frequent grid cuts, we design a Hybrid Solar System with a LiFePO4 battery bank or dual-source automatic transfer switch.

In Tamil Nadu, a well-engineered unshaded 1 kW solar array generates an average of 4.2 to 5.0 kilowatt-hours (units) per day across the year, translating to approximately 120–140 units per month, accounting for monsoon cloudy periods and peak summer generation.

Yes. Modern TOPCon and Mono-PERC solar cells are sensitive to diffuse ambient light and continue to generate power even under cloudy skies, producing approximately 20% to 35% of their peak rated capacity on overcast days.

During daylight hours, power generated by your solar panels first powers your home appliances. Excess generation flows backward into the TANGEDCO grid, spinning your net meter in reverse. At night, you consume power from the grid. At the end of your bimonthly billing cycle, TANGEDCO bills you only for the net difference (Units Consumed minus Units Exported).

Yes! In most cases, you do NOT need to buy a brand new pump. We install an appropriate solar PV module array and an advanced MPPT Solar Variable Frequency Drive (VFD) controller that connects directly to your existing submersible pump motor. This provides daytime irrigation without needing a diesel generator.

Yes. Commercial establishments, factories, cold storages, and hotels in Tamil Nadu can claim 40% Accelerated Depreciation (AD) under the Income Tax Act in the first year of commissioning, along with 100% input tax credit (ITC) on GST, significantly accelerating financial payback to 3–4 years.

We supply Tier-1 equipment with formal manufacturer warranties: Solar panels come with a 10–12 year product warranty and 25–30 year linear performance warranty (guaranteeing over 84% output at year 25). Solar inverters carry a 5 to 10 year warranty, and LiFePO4 batteries feature a 5-year replacement warranty.

For optimal generation, panels should be washed with plain soft water once every 15 to 20 days. Heavy dust, pollen, or bird droppings can decrease output by 10% to 20%. Our AMC contracts provide scheduled cleaning and thermal imaging inspections.