Time-of-Day (ToD) & Solar Net-Metering Modeler
Model your electricity bill economics under Time-of-Day (ToD) peak/off-peak tariff rebates, Battery Storage (BESS) peak shaving, and State SERC Solar Net-Metering credit regulations.
⚙️ Modeler Inputs & Options
📊 Scenario Economic Analysis for Maharashtra State Electricity Distribution Co. Ltd. (Mahavitaran)
Standard Grid Only
ToD Peak Shift
Solar Net-Metering
⚡ Maharashtra State Electricity Distribution Co. Ltd. (Mahavitaran) Verified Time-of-Day (ToD) Slot Schedule
| Time Slot | Hours Range | Slot Type | Units (kWh) | Rate Adj (₹/kWh) | Adjustment (₹) |
|---|---|---|---|---|---|
| Night Off-Peak Rebate | 22:00 - 06:00 | OFF_PEAK | 105 | ₹-1.5 | ₹-157.5 |
| Morning Normal | 06:00 - 09:00 | NORMAL | 87.5 | ₹0 | ₹0 |
| Morning Peak Surcharge | 09:00 - 12:00 | PEAK | 35 | +₹0.8 | +₹28 |
| Afternoon Normal | 12:00 - 18:00 | NORMAL | 87.5 | ₹0 | ₹0 |
| Evening Peak Surcharge | 18:00 - 22:00 | PEAK | 35 | +₹0.8 | +₹28 |
How Time-of-Day (ToD) Tariffs & Peak Shaving Work in India
Time-of-Day (ToD) tariffs are structured by State Electricity Regulatory Commissions (SERCs) to balance grid demand across 24-hour cycles. By applying financial surcharges during high-demand peak hours and offering rebates during low-demand off-peak hours, DISCOMs incentivize consumers to optimize electricity use.
Evening & Morning Peak
During peak grid demand (typically 09:00–12:00 and 18:00–22:00), DISCOMs levy surcharges ranging from +₹0.80 to +₹1.00/kWh above standard energy slab rates.
Night Off-Peak Hours
During night hours (22:00–06:00), grid load drops. DISCOMs offer tariff rebates (-₹1.00 to -₹1.50/kWh), reducing energy charges for EV charging and night loads.
Battery Energy Storage
Battery Energy Storage Systems (BESS) charge during cheap night hours or solar hours, discharging during evening peak hours to eliminate peak tariff surcharges.
Frequently Asked Questions (ToD & Solar Net-Metering)
What is Time-of-Day (ToD) electricity tariff in India?
Time-of-Day (ToD) tariff is an energy pricing structure where per-unit electricity rates vary depending on the hour of the day. Indian state regulatory commissions (SERCs) establish peak hours (with extra surcharges, e.g., +₹0.80 to +₹1.00/kWh) and off-peak night hours (with tariff rebates, e.g., -₹1.00 to -₹1.50/kWh) to encourage load shifting away from peak grid demand periods.
How does Solar Net-Metering credit banking work?
Under state SERC Net-Metering regulations, solar energy generated by your rooftop solar PV plant is first consumed by your home. Excess unconsumed units exported to the grid are banked and credited against grid consumption on your monthly DISCOM bill. At the end of the settlement year, net surplus generation is settled at the DISCOM's approved APPC rate.
How does Battery Energy Storage (BESS) perform peak shaving?
Battery Energy Storage Systems (BESS) charge during low-cost off-peak night slots or surplus daytime solar generation, and discharge during expensive evening ToD peak hours. This 'peak shaving' minimizes high-tariff grid consumption without reducing energy use.
Which Indian state DISCOMs support Time-of-Day (ToD) tariffs?
ToD tariffs are mandated by MERC in Maharashtra (MSEDCL, Tata Power, BEST), KERC in Karnataka (BESCOM, MESCOM), DERC in Delhi (BSES BRPL, BYPL, TPDDL), and WBERC in West Bengal for commercial, industrial, and high-consumption domestic consumers.
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🛡️ Zero-Fabrication Regulatory Truth & Source Traceability
ToD slot surcharges/rebates and solar net-metering banking rules are derived strictly from official SERC tariff orders (MERC, KERC, DERC, WBERC). Utilities undergoing regulatory ingestion (PARTIAL / PENDING) display explicit notice until official filings pass human steward verification.