The DMK government released its electricity white paper in 2026 documenting the state of the sector inherited, reforms undertaken and challenges ahead. This page breaks down all key claims with data visualisations.
Claim: TANGEDCO accumulated losses stood at ₹1.94 lakh crore when the 2021 white paper was compiled, compared to ₹11,000 Cr in 2010-11. The AIADMK decade (2011–2021) added ₹63,700 Cr to accumulated losses.
Data check: TANGEDCO annual reports confirm accumulated losses of ₹74,700 Cr at May 2021. The ₹1.94L Cr figure in the white paper likely includes contingent liabilities and off-balance-sheet items.
Claim: Power purchase cost rose from ₹2.84/unit (2010-11) to ₹6.84/unit (2024-25) — a 141% increase — while average tariff only rose from ₹3.10 to ₹5.12, creating a ₹1.72/unit gap.
Data check: ✓ Confirmed by TANGEDCO tariff filing data and TNERC orders. Revenue gap of ₹15,200 Cr/year is the primary driver of annual losses.
Claim: AT&C losses reduced from 18.2% (when DMK took over in 2021) to 14.8% (2024) — saving approximately ₹4,000 Cr/year. This is attributed to smart meters, revenue protection teams and feeder separation.
Data check: ✓ CEA and PFC data confirms TN AT&C at 14.8% (2023). The ₹4,000 Cr savings estimate is plausible at 3.4 pp × ~₹1,200 Cr per pp.
Claim: Renewable energy share grew from 42% to 71% of installed capacity under the DMK government (2021–2024). TN is ranked #1 nationally for rooftop solar at 2.8 GW.
Data check: ✓ MNRE confirms TN rooftop solar at 2.8 GW. Renewable capacity % from TANGEDCO reports: 68.9% in 2021, 71.0% in 2024. Growth slower than claimed — most capacity was added under AIADMK.
Claim: The 0-100 units free scheme costs ₹4,800 Cr/year and agricultural free power costs ₹6,200 Cr/year — total subsidy burden of ₹11,000 Cr/year, funded through cross-subsidy from commercial and industrial consumers.
Context: The scheme was introduced by DMK in 2006 and continued by AIADMK. While popular, it deepens TANGEDCO's structural deficit. Every government has retained it despite cost pressures.
Claim: Government departments owe TANGEDCO ₹12,400 Cr in outstanding dues — a chronic cash-flow problem that forces TANGEDCO to borrow at high interest to meet operating expenses.
Data check: ✓ CAG Report 2022-23 corroborates outstanding dues from state govt entities. This is a common pattern across state DISCOMs nationally.
Claim: 20 lakh smart prepaid meters installed between 2021–2024 against a target of 1.5 crore. Smart meters are credited as a key driver of AT&C loss reduction and billing accuracy improvement.
Context: At 6.9% of total connections, TN's smart meter coverage lags Gujarat (28.4%) and Telangana (22.4%). The pace needs to accelerate significantly to meet targets.
Claim: Green Energy Corridor Phase II — a ₹13,000 Cr transmission infrastructure investment to evacuate renewable power from generation sites to load centres — is underway with central funding support.
Context: This is essential for TN to monetise its renewable advantage. Without grid capacity, renewable generation is curtailed. Phase I (₹2,200 Cr) added 3,000 circuit km of transmission lines.
The ₹1.72/unit revenue gap needs a phased tariff revision. No government has done this in a politically viable way. Free units scheme could be means-tested to reduce fiscal impact without hurting the poor.
At current pace, TN won't cover all 2.88 crore connections until 2038. Need to deploy 30 lakh meters/year to hit the 1.5 crore target by 2029. Gujarat's PPP model for smart meters is worth studying.
₹12,400 Cr owed by government departments must be cleared systematically. Setting up automatic deduction from department budgets (as AP has done) would solve this structurally.
At 71% renewable capacity, TN faces evening peak demand shortfalls when solar drops. Battery Energy Storage (BESS) targets of 5 GWh by 2030 need procurement to begin now.
Agricultural connections are unmetered — making it impossible to measure actual consumption or losses in the agricultural feeder. Metering farm connections (with free units guaranteed) would unlock major efficiency gains.
₹1.53 lakh Cr of TANGEDCO debt is being serviced at ~8.5% average interest = ₹13,000 Cr/year interest alone. A one-time state government takeover of older high-interest debt (as done in UDAY scheme nationally) could free up significant cash flow.