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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Forecast
Loading 90-day MAPE history for Tamil Nadu
Loading 48h forecast scorecard for Tamil Nadu
Tamil Nadu · generation mix · back to 2020
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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 18,263 MW as of 2026-08-17T20:00:00+00:00 IST, sourced from the India Energy Atlas state-page-live snapshot.
Renewables (solar, wind, hydro, nuclear) account for 41.4% of in-state generation in Tamil Nadu as of 2026-08-17T20:00:00+00:00 IST.
Tamil Nadu's current grid carbon intensity is 12 gCO2/kWh as of 2026-08-17T20:00:00+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 18,263 MW of electricity at the current hour (2026-08-18T02:00:00+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 35.9%. Grid carbon intensity is 12 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 2026-08-18T02:00:00+05:30
Load shape
SOURCE: SLDC + modeled demand · UPDATED 02:30 IST
Load distribution
SOURCE: SLDC + modeled demand · UPDATED 02:30 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.
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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.
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 02:30 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.
Upstream: atlas-discom-disaggregation · /v1/discom-disaggregation/hourly-residential-demand
Residential Tariff
| Schedule | Slab | Energy rate (₹/kWh) |
|---|---|---|
| LT-IA | 0–400 kWh | ₹4.95 |
| LT-IA | 400–500 kWh | ₹6.65 |
| LT-IA | 500–600 kWh | ₹8.80 |
| LT-IA | 600–800 kWh | ₹9.95 |
| LT-IA | 800–1000 kWh | ₹11.05 |
| LT-IA | 1000+ kWh | ₹12.15 |
10-Year Tariff History
Residential · 2 orders
Published slab rates · no derived averages
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.
INSIGHTS
Mercom India· 1 h agoNLC India Renewables (NIRL) has announced the winner of its project management consultancy auction for two battery energy storage system projects totaling 275 MW/650 MWh and a 50 MW solar project in Tamil Nadu.NLC India had floated the consultancy tender on behalf of its…
Syndicated from Mercom India · Open original →
Power Line Magazine· 15 h agoSyndicated from Power Line Magazine · Open original →
ET Energy World· 19 h agoThe Chennai bench of the National Company Law Appellate Tribunal (NCLAT) disposed of the appeal based on a joint memo filed by the two companies, recording the settlement between them.
Syndicated from ET Energy World · Open original →
PV Magazine India· 3 d agoVikram Solar has inaugurated a 6 GW solar PV module manufacturing plant at Gangaikondan in Tirunelveli district, Tamil Nadu. Following the commissioning of the new production line, the company's total solar PV module manufacturing capacity has increased to 15.5 GW per year.
Syndicated from PV Magazine India · Open original →
Saur Energy International· 3 d agoThe Hinduja Group plans to invest ₹2,500 crore in Tamil Nadu across renewable energy, electric mobility, automotive, financial services, energy, battery charging infrastructure and digital mobility solutions, the group said on Thursday. As part of the commitment, Amit Saharia,…
Syndicated from Saur Energy International · Open original →
Saur Energy International· 3 d agoTamil Nadu- based SWELECT Energy Systems' revenue and net profit declined in the first quarter of Financial Year 2027 (FY27). The company’s revenue from operations stood at ₹130.77 crore, down 26.21% YoY from ₹177.22 crore in Q1 FY26 and 35.39% QoQ from ₹202.42 crore in Q4…
Syndicated from Saur Energy International · Open original →
PV Magazine India· 4 d agoThe Group, through its arm Hinduja Renewables Energy, will develop more than 200 MW of renewable energy projects across solar, wind and battery technologies. It will also explore opportunities in electric mobility, financial services, battery-charging infrastructure and digital…
Syndicated from PV Magazine India · Open original →
Power Line Magazine· 5 d agoSyndicated from Power Line Magazine · Open original →
Saur Energy International· 7 d agoGujarat notified the Viksit Gujarat Data Center Policy 2026-29 on August 7, targeting 7.5 GW of hyperscale “Green AI” data center capacity by 2029, anchored around the Dholera Special Investment Region, which the state wants developed into one of the world's largest hyperscale…
Syndicated from Saur Energy International · Open original →
Saur Energy International· 7 d agoIndian wind energy company Inox Wind is making a strategic shift in its business model, moving away from a heavy reliance on turnkey engineering, procurement and construction (EPC) projects towards a larger share of wind turbine equipment supply. The company believes the shift…
Syndicated from Saur Energy International · Open original →
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