Industrial Electricity Tariff Calculator
Calculate your electricity bill instantly using actual DISCOM tariff structures. Supports HT and LT industrial tariffs for KSEB, BESCOM, MSEDCL, TANGEDCO, and CPT.
Fill in your details and click “Calculate Bill” to see your estimated electricity cost.
How Industrial Electricity Tariffs Work in India
Industrial electricity tariffs in India are structured differently from residential tariffs. Each state's DISCOM (Distribution Company) sets its own tariff schedule, approved by the State Electricity Regulatory Commission (SERC). Industrial consumers are typically classified under High Tension (HT) or Low Tension (LT) categories based on their connected load and supply voltage.
Understanding Fixed Charges vs. Energy Charges
Fixed / Demand Charges are levied based on your contract demand or billing demand (whichever is higher), measured in kW or kVA. This charge applies regardless of how much energy you actually consume. Most DISCOMs use a minimum guarantee model where billing demand is the higher of your actual maximum demand and a percentage (typically 75-90%) of your contract demand.
Energy / Usage Charges are based on actual electricity consumed, measured in kWh. Rates can be flat (same rate for all consumption) or telescopic (rates increase with higher consumption slabs). Many HT tariffs use a flat per-unit rate with TOD adjustment.
What is Time-of-Day (TOD) Tariff?
TOD tariffs apply different rates depending on when electricity is consumed. Peak hours (typically 6 PM to 10 PM) carry a surcharge, while off-peak hours (typically 10 PM to 6 AM) offer a discount. This pricing structure incentivizes industries to shift energy-intensive operations to off-peak periods, reducing strain on the grid and lowering costs. Industries that can schedule flexible loads like chillers, compressors, or batch processes during off-peak hours can achieve significant savings.
Supported DISCOMs
- KSEB (Kerala State Electricity Board) — HT and LT industrial tariffs with 3-slot TOD
- BESCOM (Bangalore Electricity Supply Company) — HT industrial tariffs with 4-slot TOD
- MSEDCL (Maharashtra State Electricity Distribution Co. Ltd) — HT industrial tariffs with 5-slot TOD
- TANGEDCO (Tamil Nadu Generation and Distribution Corporation) — HT industrial tariffs
- CPT (Electricity Department, Puducherry) — HT industrial tariffs
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Learn More About ZerowattFrequently Asked Questions
How is an industrial electricity bill calculated in India?
Industrial electricity bills in India consist of two main components: a fixed/demand charge (based on your contract demand or maximum demand in kVA/kW) and an energy/usage charge (based on actual kWh consumed). Many DISCOMs also apply Time-of-Day (TOD) tariffs where rates vary by time of use.
What is the difference between contract demand and maximum demand?
Contract demand is the power capacity (in kW or kVA) you agree to with your DISCOM when signing up for an industrial connection. Maximum demand is the highest actual power drawn by your facility during a billing period, measured in 15-minute intervals. Your billing demand is typically the higher of the two, or a percentage of your contract demand.
What are Time-of-Day (TOD) tariffs?
TOD tariffs vary the energy charge rate based on the time of day. Typically, peak hours (6 PM - 10 PM) have a surcharge of 15-50% above the normal rate, while off-peak hours (10 PM - 6 AM) offer a discount of 5-25%. This incentivizes industries to shift energy-intensive operations to off-peak hours.
Which DISCOMs are supported by this calculator?
Currently supported: KSEB (Kerala), BESCOM (Karnataka), MSEDCL (Maharashtra), TANGEDCO (Tamil Nadu), and CPT (Puducherry). We are adding more DISCOMs regularly.