Tamil Nadu Generation and Distribution Corporation Limited
ImprovingAT&C losses, FY16 → FY23
11.7%
Latest
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Atlas Pro — 1-yr history, chart & CSV exports, new features, daily brief, MCP connector
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— ₹399/mo.Loading demand heatmap
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Loading multi-year demand
Forecast
Loading 90-day MAPE history for Tamil Nadu
Loading 48h forecast scorecard for Tamil Nadu
Tamil Nadu · generation mix · back to 2020
Loading RPO compliance
Loading carbon heatmap
Loading fuel-mix share
State at a glance
Loading POSOCO visualizations
Loading residential cost curve for Tamil Nadu
Subsidies & Incentives
Editorial seed catalogue covering central schemes (PM Surya Ghar Muft Bijli Yojana, PM-KUSUM) plus state-specific schemes (DBT for agriculture, domestic free-units, OA banking). Rows with is_modeled=true are reasonable estimates pending direct verification of the primary GR / regulator order.
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Tamil Nadu is drawing 18,238 MW as of 2026-08-17T22:00:00+00:00 IST, sourced from the India Energy Atlas state-page-live snapshot.
Renewables (solar, wind, hydro, nuclear) account for 39.7% of in-state generation in Tamil Nadu as of 2026-08-17T22:00:00+00:00 IST.
Tamil Nadu's current grid carbon intensity is 13 gCO2/kWh as of 2026-08-17T22:00:00+00:00 IST, computed from the metered fuel mix using CEA v18 lifecycle emission factors.
Today's peak demand in Tamil Nadu fell at 00:30 IST. Long-run peaks land in the evening (7-9 pm IST) on the residential lighting load.
Distribution in Tamil Nadu is handled by one or more state-licensed DISCOMs; see the DISCOM card on the state page for the live roster.
The day-ahead demand forecast for Tamil Nadu runs at single-digit MAPE; we publish the rolling 30-day MAPE on the State MAPE History card so readers can audit it themselves. Live demand comes from the SLDC scrape when available; non-SLDC states use the Atlas DISCOM disaggregation pipeline (Tier-A/B/C provenance, P10/P50/P90 bands).
Tamil Nadu is drawing 18,238 MW of electricity at the current hour (2026-08-18T03:00:00+05:30 IST), per the India Energy Atlas state-page-live snapshot.
The latest modeled in-state generation mix for Tamil Nadu is dominated by Wind at 34.1%. Grid carbon intensity is 13 gCO2/kWh.
Demand for Tamil Nadu is sourced from a live SLDC scrape (metered, no disaggregation needed).
The day-ahead hourly demand forecast for Tamil Nadu publishes a ±1.5σ band over the next 24 hours — based on 30 similar days across 3 years; level-calibrated x1.15 vs canonical trailing 24h.
Composed at 2026-08-18T03:00:00+05:30
Load shape
SOURCE: SLDC + modeled demand · UPDATED 03:30 IST
Load distribution
SOURCE: SLDC + modeled demand · UPDATED 03:30 IST
Latest peak
19,606 MW
2-yr peak
21,724 MW
Most recent: 2026-08-14
Weather sensitivity
Weather correlation data is not available for this state yet.
Slope
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R²
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Confidence
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Demand's sensitivity to temperature (MW per degree) is what turns a heatwave forecast into a load forecast. A high, tight slope means cooling load dominates and peaks are weather-driven and forecastable; a weak or noisy slope means the swing factor is something else — industrial shifts, agriculture, or a data gap worth questioning.
Verified <5% on the leak-free IEA-1763 spike; the live-served forecast is currently above target (serving-side level/staleness artifact) pending the recommended calibration deploy.
A carbon scorecard isn't published for Tamil Nadu yet — it appears once enough hourly generation history has accumulated.
Policy & RE Transition
Renewable Purchase Obligation: MNRE target trajectory vs SERC-reported actual compliance.
Latest actual
FY23 · modelled
Shortfall
vs FY23 target
A Renewable Purchase Obligation is statutory, not aspirational: a state utility must source a set share of its energy from renewables or pay a penalty. A widening shortfall against the MNRE trajectory is an early signal of either a procurement gap or a banked-REC scramble at year-end — both move power and REC prices.
No solar capture-rate payload returned for Tamil Nadu.
Grid cleanliness
Each cell is one hour's grid carbon intensity. Greener = cleaner, browner = more fossil — the green hours are when discretionary load is cheapest on emissions.
SOURCE: CEA carbon factors · UPDATED 03:30 IST
Reliability — POSOCO PSP
All-time state peak
2026-07-14
Days with shortage
Within window
Cumulative shortage
Energy not served
Worst single day
No shortage in window
Adequacy calendar
Energy shortage by day
Each square is one day. Color intensity = energy shortage (MU).
Loading 90-day adequacy strip
Coverage: frequency since 2025-09-19; congestion since 2026-05-22; demand records since 2018-01-01; news since 2026-05-22.
Interchange under-drawal -340 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -223 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -295 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -185 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -162 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -182 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -214 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -166 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -200 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -182 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -202 MW vs schedule
Inter-state transfer · POSOCO PSP daily
Interchange under-drawal -154 MW vs schedule
Inter-state transfer · POSOCO PSP daily
An hourly residential cost curve isn't published for Tamil Nadu yet — it appears once the underlying tariff data is available.
Residential Tariff
TNERC (Tamil Nadu Electricity Regulatory Commission) · 1 DISCOM
| Slab | Energy rate (₹/kWh) |
|---|---|
| 0–400 kWh | ₹4.95 |
| 400–500 kWh | ₹6.65 |
| 500–600 kWh | ₹8.80 |
| 600–800 kWh | ₹9.95 |
| 800–1000 kWh | ₹11.05 |
| 1000+ kWh | ₹12.15 |
DISCOM Health
Aggregate Technical & Commercial losses per distribution utility, with multi-year trend.
Tamil Nadu Generation and Distribution Corporation Limited
ImprovingAT&C losses, FY16 → FY23
11.7%
Latest
Aggregate Technical & Commercial losses per PFC's Annual Integrated Rating of State Power Distribution Utilities. Backfilled FY16 onwards where published. Latest published edition is the 13th Rating (FY22-23 data); forward-year cells marked is_modeled=true.
AT&C (Aggregate Technical & Commercial) loss is the single clearest read on a distribution utility's solvency. Every percentage point is power delivered but never billed or collected; a worsening trend tells you a DISCOM is heading toward the payment delays that ripple back to gencos and IPPs.
Grid reliability
Each cell is a day's unmet peak demand (POSOCO). Green = fully met; redder = larger shortfall — occasional stress days stand out against the reliable run.
Peak demand fully met every day
SOURCE: Grid-India PSP (daily) · UPDATED 15 Aug