Net Metering Eligibility — Tamil Nadu
Can you install that solar size in Tamil Nadu? Consumer cap, scheme ceiling and DT headroom in one screen.
Before paying application fees in Tamil Nadu, screen the three gates every DISCOM checks: your sanctioned-load cap, the scheme ceiling, and the local transformer's solar headroom. TNERC moved most categories to net feed-in — exports earn a feed-in rate rather than 1:1 banking; LT consumers retain network-feasibility caps.
Tamil Nadu: TNERC moved most categories to net feed-in — exports earn a feed-in rate rather than 1:1 banking; LT consumers retain network-feasibility caps. Rules change with tariff orders — treat this as a pre-application screen and confirm the current regulation on the DISCOM portal before paying fees.
Planning estimate only — interconnection, protection settings and compliance must be reviewed and signed off by a licensed electrical engineer and your utility before energisation.
Use the free Net Metering Eligibility — Tamil Nadu online — Can you install that solar size in Tamil Nadu? Consumer cap, scheme ceiling and DT headroom in one screen. Runs instantly in your browser: no signup, no upload, mobile-friendly.
About Net Metering Eligibility — Tamil Nadu
Before paying application fees in Tamil Nadu, screen the three gates every DISCOM checks: your sanctioned-load cap, the scheme ceiling, and the local transformer's solar headroom. TNERC moved most categories to net feed-in — exports earn a feed-in rate rather than 1:1 banking; LT consumers retain network-feasibility caps.
How to use Net Metering Eligibility — Tamil Nadu
- 1Enter your sanctioned load and proposed solar size.
- 2Add the local DT capacity and existing solar on it.
- 3Read eligibility and the binding constraint.
Why use Net Metering Eligibility — Tamil Nadu?
- ✓The three real gates: consumer cap, scheme ceiling, DT headroom
- ✓State-correct rules with their quirks noted
- ✓Transformer-queue awareness — the constraint applicants discover too late
- ✓Pre-application screening saves fee cycles
Frequently asked questions
What limits how much rooftop solar I can install?+
Three gates, tightest wins: your sanctioned load (most states cap at 80–100% of it), the scheme's kW ceiling, and the local distribution transformer's solar quota (commonly 15–30% of its kVA, shared first-come). This tool checks all three — applicants usually know only the first.
What is DT capacity and why does it block applications?+
The neighbourhood transformer can only absorb so much backfeed before voltage and protection misbehave, so DISCOMs cap solar per DT. Early applicants on your transformer consume the quota; late ones get 'technical infeasibility'. Check (and apply) early in your DT's queue — the calculator shows the headroom math.
Can I increase my sanctioned load to install more solar?+
Yes — load enhancement is a standard DISCOM application (fees scale with kW), and it lifts the consumer-cap gate. Sequence matters: enhance first, then apply for solar, since the feasibility check reads the sanctioned load on file the day it runs.
Is exceeding the net-metering cap ever worth it?+
Behind-the-meter (no-export) capacity often escapes the caps entirely — industrial captive systems with export-blocking relays exceed net-metering limits legally in many states. The trade: surplus is curtailed, so size to daytime self-consumption. The eligibility presets here include that route.
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