Question 1

How much roof area do I need for a 3 kW system?

Accepted Answer

Roughly 200-250 sq. ft. of shadow-free roof area is sufficient for a 3 kW solar system using tier-1 mono PERC panels.

Question 2

How much subsidy can I get?

Accepted Answer

Under PM Surya Ghar Muft Bijli Yojana, residential customers get ₹30,000/kW for the first 2 kW and ₹18,000/kW for the third — capped at ₹78,000.

Question 3

What is the payback period?

Accepted Answer

Most residential systems in Tamil Nadu pay back in 4-5 years after subsidy, then continue generating free power for 20+ years.

Question 4

What is net metering?

Accepted Answer

Net metering allows you to export excess solar energy to the grid and receive credit against your consumption. TANGEDCO installs a bidirectional meter after approval.

Question 5

Do you provide warranty?

Accepted Answer

Yes — 25 years performance warranty on panels, 5-10 years on inverters and 2 years on complete installation workmanship.

Question 6

How long does installation take?

Accepted Answer

Residential systems (1-10 kW) typically take 2-3 weeks including approvals, installation and commissioning.

Question 7

Do panels work on cloudy days?

Accepted Answer

Yes, but at reduced output — around 10-25% of peak generation depending on cloud density.

Question 8

What maintenance is required?

Accepted Answer

Panels need cleaning every 2-3 months. We offer AMC contracts with quarterly cleaning and full system diagnostics.

Question 9

Can I add batteries later?

Accepted Answer

Yes, hybrid inverters allow you to add battery storage later. We can also retrofit if you originally installed a grid-tied system.

Question 10

Will solar work during power cuts?

Accepted Answer

On-grid systems shut down during grid failure. Only hybrid or off-grid systems with batteries continue supplying power.

Question 11

What brands do you use?

Accepted Answer

Waaree, Adani Solar, Vikram Solar, Goldi, RenewSys for panels; Growatt, Sungrow, Luminous, Havells, UTL for inverters.

Question 12

Do you offer EMI or financing?

Accepted Answer

Yes, we work with leading banks and NBFCs to provide solar financing with tenures of 3-7 years.

Question 13

How is generation measured?

Accepted Answer

Every system includes remote monitoring via a mobile app showing real-time and historical generation data.

Question 14

What about lightning protection?

Accepted Answer

All our installations include earthing kits and lightning arrestors as standard safety measures.

Question 15

Do you serve outside Chennai?

Accepted Answer

Yes, we cover all major districts of Tamil Nadu including Chengalpattu, Kanchipuram, Coimbatore, Salem and Trichy.

Solar questions, answered.