Tell us where your system is, what you have and your monthly units. We show the Kerala or Tamil Nadu rules, subsidies and conditions that apply, and check how your system is performing.
Use the checker above to show only the rules that apply to you. Below is the full list.
₹30,000 per kW for the first 2 kW and ₹18,000 for the 3rd kW, maximum ₹78,000 for 3 kW or more. Apply on the national portal before installing, use a registered vendor and DCR modules; the subsidy is credited after net-meter commissioning and inspection.
Checked 2026-10-03 · PM Surya Ghar portal · pv magazine: PM Surya Ghar milestone
The subsidy is tied to a new installation applied for on the portal. Systems already installed are generally not eligible retroactively. Ask the portal helpline if your system was installed recently or under a different scheme.
Checked 2026-10-03 · PM Surya Ghar portal
The rooftop subsidy is for grid-connected systems with net metering. Pure off-grid (battery-only) systems do not qualify.
Checked 2026-10-03 · PM Surya Ghar portal
Tamil Nadu announced a state subsidy running alongside PM Surya Ghar: ₹22,000 on top of ₹78,000 for 3 kW and above, total ₹1 lakh. ₹50 crore earmarked. Reports say applications opened on the TNPDCL rooftop-solar portal from 21 September 2026; budget coverage gives no start date, so confirm on the portal.
Checked 2026-10-03 · DT Next: TN Budget 2026 · Energetica India: Tamil Nadu subsidy
Resident Welfare Associations and Group Housing Societies can get ₹18,000 per kW for solar powering common facilities (lifts, pumps, lighting), up to 500 kW (about 3 kW per house). The association applies, not individual flat owners.
Checked 2026-10-03 · PM Surya Ghar portal
Standalone solar pumps typically get central assistance of about 30% of the benchmark cost, a state share (often about 30%) and the balance from the farmer or a bank loan. Quotas and implementing agencies differ by state, so apply through the Agriculture Department / ANERT (Kerala) or the Tamil Nadu agriculture engineering agencies.
Checked 2026-10-03 · MNRE PM-KUSUM
The household subsidy does not cover commercial, institutional or industrial connections. Savings come from the tariff, and options include depreciation (taxable entities), loans and RESCO / pay-per-unit models.
Checked 2026-10-03 · PM Surya Ghar portal
Panels must be Domestic Content Requirement (Indian-made cells) and the installer must be registered on the portal and empanelled with the DISCOM. Non-DCR panels or unregistered vendors can void the subsidy.
Checked 2026-10-03 · PM Surya Ghar portal
Under KSERC's 2025 regulations (billing changes from 2026), small systems, reported as 1–3 kW (up to 5 kW with a hybrid inverter and battery), use net metering: exported units are credited against your consumption.
Checked 2026-10-03 · SolarQuarter: KSERC regulations
Systems above the net-metering limit, reported up to 500 kW, fall under net billing: you pay retail tariff for units you draw and exported units are settled at a low rate (reported around ₹2.8–3.1 per unit). Size the system for your daytime consumption. Confirm current limits with KSEB.
Checked 2026-10-03 · SolarQuarter: KSERC regulations
Existing installations are reported to continue under the net-metering terms they were commissioned with (a grandfather clause). Do not change capacity or meter arrangement without checking how it affects your terms.
Checked 2026-10-03 · SolarQuarter: KSERC regulations
Kanyakumari is served by TNPDCL (formerly TANGEDCO). Grid connection and net metering follow TNPDCL / TNERC procedures: feasibility, installation by a registered vendor, inspection and a bi-directional meter.
Checked 2026-10-03
Under net billing, peak-hour energy is reported to be priced higher (about 1.5× standard) and exports at peak earn more. Shifting loads such as EV charging and water heating to the daytime helps.
Checked 2026-10-03 · SolarQuarter: KSERC regulations
Reported: systems up to 10 kW are exempt from grid-support charges; larger systems pay them on grid-drawn units beyond banked solar energy.
Checked 2026-10-03 · SolarQuarter: KSERC regulations
KSEB bills every two months. Solar reduces energy charges, but fixed charges and duty remain, so a very small bill (a few hundred rupees) is the realistic floor.
Checked 2026-10-03
Under current policy, domestic consumers get the first 100 units free in each bimonthly bill. Solar saves money only on units beyond the free allowance, so very small consumers see a longer payback. Confirm the latest TNERC tariff order.
Checked 2026-10-03
Participating banks offer collateral-free loans for rooftop systems up to 3 kW at concessional rates (around 7% reported) under the national scheme, and normal green or home-improvement loans for larger systems. Check each bank's current terms.
Checked 2026-10-03 · PM Surya Ghar portal
Shops, schools, churches, hospitals and industry can finance solar with a term loan whose EMI is below the monthly saving, or choose a RESCO / OPEX model with zero upfront cost and a fixed per-unit tariff.
Checked 2026-10-03
Reported: GST on solar modules and related renewable energy devices was cut from 12% to 5% in September 2025. Check the rate on your installer's invoice.
Checked 2026-10-03
Taxable businesses can claim depreciation on solar plant; the rate depends on the tax regime and year. Ask your chartered accountant before choosing between buying and RESCO.
Checked 2026-10-03
Installers reported delays in net-meter supply in parts of Kerala during August–September 2026, notably some three-phase connections. Do not energise the system before KSEB commissions it; keep the application number and chase the section office.
Checked 2026-10-03 · GSL Energy: net meter delay
Strong winds (Aralvaimozhi corridor) and salty air demand wind-rated structures, proper foundations, hot-dip galvanised or aluminium mounting, stainless fasteners and regular washing.
Checked 2026-10-03
Anti-islanding protection switches grid-tied inverters off during a grid outage. For backup you need a hybrid inverter with a battery.
Checked 2026-10-03
A grid-connected hybrid system with net metering can qualify for the solar part of the subsidy; the battery cost is not subsidised. Battery-backed small systems may have a higher net-metering limit in Kerala (reported 5 kW with about 30% storage).
Checked 2026-10-03 · SolarQuarter: KSERC regulations
A healthy system produces roughly 4 units per kW per day in Kerala and about 4.25 in Kanyakumari on an annual average. If your monthly production is more than 20% below expectation in a clear month, check for dirt, shade, a tripped breaker or an inverter fault.
Checked 2026-10-03
We review subsidy, metering and tariff rules every month and whenever a major change is announced. Each rule shows the date it was last checked and a source link.
'Official source' rules come from scheme or regulation documents. 'Reported' rules come from credible news or trade coverage and should be confirmed with KSEB, TNPDCL or the portal. 'Verify' rules change often.
No. It tells you what to ask and what to check. Final eligibility is decided by the scheme portal and your electricity board.
Yes. Choose 'I already have a solar system' to see rules for existing systems and a quick performance check of your output.
Tell us your monthly bill. We'll size the system, apply the PM Surya Ghar subsidy and connect you with a verified installer — no spam, no obligation.
