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EB Bill Calculator

Estimate your electricity bill from units consumed using editable slab tariffs.

Tariff Slabs (₹/unit)

Bill Summary

Energy Charge
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Free Units (Subsidy)
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Fixed Charge
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Total Bill
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Effective Rate / Unit
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Fixed Charges (bi-monthly)

Connected LoadFixed Charge per Bi-Month
Up to 500 W₹30
501 W – 1 kW₹45
Above 1 kW₹45 + ₹30 per additional kW

The 500-Unit Cliff: Why Tier 2 Hurts

The biggest single jump in TANGEDCO's domestic structure is not between slabs — it is between the two tiers. Cross 500 units bi-monthly and the subsidised free quota drops from 200 units to just 100 units. You also unlock the steep upper slabs (₹8.40 → ₹11.55 per unit).

Tier 1 · 500 units 200 free + 200 × ₹4.70 + 100 × ₹6.30 = ₹1,570 energy charge
Tier 2 · 600 units 100 free + 300 × ₹4.70 + 100 × ₹6.30 + 100 × ₹8.40 = ₹2,880 energy charge

100 extra units added ₹1,310 to the bill — an effective rate of ₹13.10 per unit for the extra consumption (because both the lost subsidy and the new top slab hit at once).

This is precisely where a small solar system delivers outsized returns: even a 1 kW system generating 120–140 units bi-monthly can push you back under the 500-unit threshold, restoring the 200-unit subsidy and shaving off the ₹8.40 slab entirely.

Download / Print: Use Ctrl+P (or ⌘+P) to save this page as PDF — the table is print-optimised.

Frequently asked questions

How is my electricity bill calculated?
The bill is the sum of energy charges across consumption slabs plus a fixed charge. Energy charge equals the total of units in each slab multiplied by that slab rate, after applying any free-unit subsidy.
What are slab tariffs?
Slabs charge different per-unit rates as usage crosses thresholds (for example, the first 100 units free, then about 2.35, 4.70 and higher per unit), so heavier consumption moves into costlier slabs.
What are free units or subsidy?
For TANGEDCO domestic users, the first 200 units are free below 500 units bi-monthly, dropping to 100 free units once consumption crosses the 500-unit threshold.
Why does crossing 500 units cost so much more?
Crossing 500 units bi-monthly reduces the free quota from 200 to 100 units and unlocks steeper upper slabs (up to about 11.55 per unit), so the marginal rate rises sharply.