Part of the complete guide: Net metering (complete guide)
In Kerala, small rooftop systems (reported as 1–3 kW, or up to 5 kW with a battery) use net metering, while larger systems fall under net billing, where exported units are settled at a low rate rather than your retail tariff. Apply for feasibility, sign the agreement, install via an empanelled vendor, then KSEB inspects and fits the meter. Your installer normally files the paperwork.
What net metering means for you
A bi-directional meter records the units you draw from KSEB and the units your solar sends back. Surplus units are credited against your consumption; at year-end, unused credit is settled as per KSERC rules. Because KSEB bills every two months, credits roll across billing cycles. Regulations evolve — always confirm the current KSERC regulation and KSEB circulars.
What changed in the 2025–26 KSERC rules
KSERC's newer renewable-energy regulations (effective late 2025, with billing changes from 2026) distinguish net metering for small systems from net billing for larger ones. Under net billing, exported units are settled at a low rate (reports put it around ₹2.8–3.1 per unit) instead of offsetting units you buy at the retail tariff. Time-of-day pricing and grid-support charges for larger systems have also been discussed. Existing net-metered owners are reported to keep their original terms.
Documents you will need
- Latest KSEB bill with consumer number
- Aadhaar / ID of the consumer
- Ownership proof or consent of owner
- Roof layout and single-line diagram (installer provides)
- Quotation and installer's empanelment details
Application steps
- Feasibility: apply online (KSEB web self-service portal) or at your Section Office; KSEB checks transformer and feeder capacity.
- Agreement: sign the connection agreement and pay applicable fees.
- Installation by an empanelled / registered vendor.
- Inspection: KSEB (and Electrical Inspectorate where applicable) inspects earthing, protection and anti-islanding.
- Meter: a bi-directional (net) meter is installed and the system is commissioned.
- Billing shows imports, exports and net units.
Capacity limits
The solar capacity you can connect depends on your sanctioned load, phase and the metering route above. Single-phase connections typically support smaller systems; larger ones need three-phase. Confirm with your Section Office before ordering. Installers have also reported delays in net-meter supply in some districts; see what to do if your meter is late.
Tips to avoid delays
- Use an installer who has filed KSEB applications in your section before.
- Ensure your bill is paid up and the consumer name matches your ID.
- Share the PM Surya Ghar portal application number with your installer so both processes stay in sync.
