Delhi Electricity Bill & 200 Units Subsidy Calculator
Estimate your monthly residential electricity bill for BSES Rajdhani (BRPL), BSES Yamuna (BYPL), Tata Power DDL (TPDDL), and NDMC. Includes telescopic slabs, sanctioned load fixed fees, DISCOM PPAC fuel surcharges, and the Delhi Government 200-unit free power subsidy.
Official billing engine for BSES Rajdhani, BSES Yamuna, Tata Power-DDL & NDMC
Check your electricity meter reading difference or past monthly bill.
Found on your bill under 'Sanctioned Load' (most 1-2 BHK flats are 2 kW to 3 kW; 3 BHK with ACs are 4 kW to 5 kW).
0–200 units = 100% Free (₹0 bill) • 201–400 units = 50% energy discount (max ₹800) • >400 units = 0%
Fine-Tune Power Purchase Adjustment Cost (PPAC: 29.13%)▼
DERC revises PPAC quarterly based on power procurement prices. Current official baseline: BRPL: 29.13%, BYPL: 31.60%, TPDDL: 24.00%, NDMC: 20.00%.
Itemized DERC Domestic Tariff Breakdown
As per DERC Tariff Schedule LT-1| Billing Head | Statutory Basis / Rate | Units / Load | Amount (₹) |
|---|---|---|---|
| Energy Charge (0 – 200 units) | ₹3.00 / kWh | 200 units | ₹600.00 |
| Energy Charge (201 – 400 units) | ₹4.50 / kWh | 40 units | ₹180.00 |
| Total Energy Charges | Telescopic sum | 240 units | ₹780.00 |
| Fixed Charges | ₹50/kW/month | 3 kW | ₹150.00 |
| Base Charges (Fixed + Energy) | DERC Base Subtotal | — | ₹930.00 |
| Regulatory Asset Surcharge (RAS) | 8.00% of Base Charges | 8.0% | ₹74.40 |
| Pension Trust Surcharge | 7.00% of Base Charges | 7.0% | ₹65.10 |
| Power Purchase Adjustment Cost (PPAC) | 29.13% of Base Charges | 29.13% | ₹270.91 |
| Delhi Electricity Duty (Tax) | 5.00% of Energy Charges | 5.0% | ₹39.00 |
| Gross Bill (Before Subsidy) | Statutory DISCOM Claim | — | ₹1379.41 |
| Delhi Government Power Subsidy | 50% Energy Subsidy (Max ₹800) | 50% | -₹390.00 |
| Net Payable Amount | Rounded to nearest rupee | Effective: ₹4.12/unit | ₹₹989 |
All-Delhi DISCOM Bill Comparison (240 Units, 3 kW)
Compare electricity costs across Delhi regions. Discrepancies exist solely due to DISCOM-specific PPAC fuel surcharges approved by DERC.
What is the Delhi Electricity Bill & Subsidy Calculation?
A Delhi Electricity Bill is computed under Delhi Electricity Regulatory Commission (DERC) domestic LT tariffs, combining telescopic energy slabs (₹3.00 to ₹8.00/kWh), sanctioned load fixed charges (₹20 to ₹250/kW), PPAC fuel surcharges (~20% to ~31.6%), an 8% deficit recovery fee, a 7% pension charge, and a 5% electricity duty. Under the Delhi Government power subsidy, households consuming up to 200 units receive a 100% waiver (₹0 bill), while 201–400 units receive a 50% energy discount capped at ₹800.
How Delhi Electricity Bills are Calculated (Official Slabs & Rules)
Every residential electricity bill in the National Capital Territory of Delhi follows a standardized multi-step tariff order formulated by the Delhi Electricity Regulatory Commission (DERC). The billing structure comprises four distinct statutory tiers:
Electricity is billed incrementally across five consumption tiers:
- 0 – 200 kWh: ₹3.00 per unit
- 201 – 400 kWh: ₹4.50 per unit
- 401 – 800 kWh: ₹6.50 per unit
- 801 – 1,200 kWh: ₹7.00 per unit
- Above 1,200 kWh: ₹8.00 per unit
Mandatory monthly capacity charge based on meter sanctioned load:
- Up to 2 kW: ₹20.00 / kW / month
- Above 2 kW up to 5 kW: ₹50.00 / kW / month
- Above 5 kW up to 15 kW: ₹100.00 / kW / month
- Above 15 kW up to 25 kW: ₹200.00 / kW / month
- Above 25 kW: ₹250.00 / kW / month
Levied on the combined sum of (Energy Charges + Fixed Charges):
- Regulatory Asset Surcharge (RAS): 8.00%
- Pension Trust Surcharge: 7.00%
- PPAC (Fuel Adjustment): Varies by DISCOM (~20% to ~31.60%)
- Delhi Electricity Duty: 5.00% of Energy Charges
Government financial support credited directly on the bill:
- 0 to 200 Units: 100% full waiver → Net Bill = ₹0
- 201 to 400 Units: 50% energy discount (Max ₹800/mo)
- Above 400 Units: 0% subsidy (Entire rebate lost)
The Famous Delhi "400-Unit Subsidy Cliff" (Why 401 Units Cost ₹760 Extra)
The Delhi power subsidy operates on a hard threshold cliff model rather than a graduated phase-out. When your meter reads exactly 400 units, you receive the full 50% energy rebate (₹750). The moment consumption registers 401 units, the entire subsidy is forfeited.
Realistic Delhi Household Worked Examples
A family living in Saket consumes 180 units during the winter month with a 2 kW sanctioned load.
A household in Mayur Vihar consumes 320 units in autumn with a 3 kW sanctioned connection.
A Rohini household running split air conditioners during peak summer consumes 650 units with a 5 kW load.
Explore our comprehensive suite of statutory Indian utility tools and multi-tenant electricity split calculators:
Frequently Asked Questions (DERC & Delhi Power Subsidy)
How does the Delhi Government 200 units free electricity subsidy work?▼
Under the Delhi Government power subsidy scheme, domestic consumers who have opted in via Aadhaar authentication receive a 100% waiver on electricity bills if their monthly consumption is 200 units (kWh) or less.
This waiver covers energy charges, sanctioned load fixed charges, PPAC surcharges, pension surcharges, and the 5% Delhi electricity duty, resulting in an exact ₹0 bill.
What electricity subsidy is provided for 201 to 400 units in Delhi?▼
For monthly consumption between 201 and 400 units, the Delhi Government provides a 50% subsidy specifically on the total energy charges, capped at a maximum of ₹800 per month.
Fixed charges, PPAC fuel surcharges, regulatory surcharges, and the 5% electricity tax remain payable by the consumer.
What is the Delhi 400-unit subsidy cliff effect?▼
If a household consumes even 1 unit above 400 units (e.g., 401 units), the Delhi Government power subsidy is completely withdrawn (0%).
Because the consumer loses the entire ₹750+ subsidy benefit, consuming 401 units instead of 400 units causes the final bill to jump suddenly by over ₹760 for a single excess unit.
What are the current DERC domestic electricity tariff slabs in Delhi?▼
As per the Delhi Electricity Regulatory Commission (DERC) LT domestic schedule, energy charges are billed telescopically:
- 0 to 200 units: ₹3.00 / unit
- 201 to 400 units: ₹4.50 / unit
- 401 to 800 units: ₹6.50 / unit
- 801 to 1,200 units: ₹7.00 / unit
- Above 1,200 units: ₹8.00 / unit
What are PPAC, Pension Surcharge, and Regulatory Asset Surcharge in Delhi?▼
Delhi electricity bills include three statutory surcharges levied on the base sum of Energy Charges plus Fixed Charges:
- Power Purchase Adjustment Cost (PPAC): Varies by DISCOM (~20% to ~31.60%) based on fuel and power purchase costs approved quarterly by DERC.
- Pension Trust Surcharge: 7.00% to fund retired Delhi Vidyut Board employee pensions.
- Regulatory Asset Surcharge: 8.00% to liquidate historical DISCOM revenue deficits.
How do I apply or opt in for the Delhi electricity subsidy?▼
To receive the power subsidy, Delhi consumers must register once by submitting an opt-in application linked with Aadhaar.
This can be completed online on the DISCOM portal (BSES Rajdhani, BSES Yamuna, or Tata Power DDL), via WhatsApp by sending "Hi" to the official DISCOM subsidy number (7011311111), or by submitting a physical form at local DISCOM customer care centers.