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Electricity Bill Calculator
Accurate estimates for Assam · APDCL
Estimated monthly bill
₹920.50
| 1–30 @ ₹2 × 30 | ₹60.00 |
| 31–120 @ ₹6 × 90 | ₹540.00 |
| 121–240 @ ₹7 × 30 | ₹210.00 |
| Energy charge | ₹810.00 |
| Fuel cost adjustment (₹0/unit) | ₹0.00 |
| Fixed charge (flat) | ₹70.00 |
| Electricity duty (5%) | ₹40.50 |
| Total | ₹920.50 |
Worked example
A 150-unit monthly Assam residential bill (single-phase) works out to ₹012345678901234567890123456789. That is ₹810.00 energy charge + ₹70.00 fixed charge + ₹40.50 duty.
See the full breakdown ↓Have a fixed budget? Work backwards
Enter what you want to spend, and we'll tell you the maximum units that stays within it — the exact inverse of the calculator above.
Budget → Units Calculator
Tell us your target bill, we'll tell you how many units that buys
You can use up to
160 units
for a monthly bill of ₹994.00 (within your ₹1,000.00 budget)
How to use this calculator
- 1Select your state — it's pre-selected for this page
- 2Enter the units consumed shown on your bill, or your meter readings
- 3Choose your connection phase (single or three) if applicable
- 4Review the itemised slab-by-slab result below the calculator
Your monthly billing cycle
APDCL bills monthly.
Assam residential tariff slabs
| Slab (units) | Rate (₹/unit) |
|---|---|
| 0–30 | ₹2.00 |
| 31–120 | ₹6.00 |
| 121–240 | ₹7.00 |
| 241–above | ₹7.60 |
| Fixed charge | ₹70 |
| Electricity duty | 5% |
Effective from 1 April 2025 · Verified 29 August 2026 · source order
Two worked examples
Lower usage
₹920.50
150 units · ₹810.00 energy + ₹70.00 fixed
Higher usage
₹2,539.60
360 units · ₹2,352.00 energy + ₹70.00 fixed + ₹117.60 duty
Common APDCL bill traps
The lifeline rate only covers the first 30 units
The subsidised ₹2.00/unit rate applies only to the first 30 units of the telescopic structure — consumption above that is billed at the higher standard slabs, up to ₹7.60/unit.
5% electricity duty applies on top of slabs
Assam's 5% electricity duty is charged on the energy bill in addition to the slab rates and fixed charge, and is easy to miss when estimating by hand.
APDCL is statewide — no regional discom to check
Unlike Bihar, Odisha or Rajasthan, Assam has a single distribution company for the whole state, so there's no risk of being billed by a different entity.
How the APDCL bill is calculated
A subsidised lifeline first slab
Assam charges just ₹2.00/unit for the first 30 units as a lifeline rate for low-income households, then rises through a telescopic structure to ₹7.60/unit, with a 5% electricity duty on the bill.
How the Assam bill is calculated
Assam domestic supply is billed monthly. Consumption is split across telescopic slabs from ₹2 to ₹7.6/unit, each band charged at its own rate. A fixed charge of a flat ₹70/month applies, plus a 5% electricity duty.
Your bill, component by component
Based on the 150-unit example above. Expand each line for what it means and whether you can influence it.
Energy chargeReducible₹810.00+
Priced across telescopic slabs — the more you use, the higher the marginal rate. Shifting usage below your next slab threshold lowers this line directly. This example totals ₹810.00.
Fuel cost adjustment (FCA)Set by DISCOM₹0.00+
A ₹0/unit pass-through surcharge that tracks the DISCOM's power-purchase cost. It applies equally to every consumer on this tariff and isn't something you can reduce by changing usage.
Fixed chargeFixed₹70.00+
Charged regardless of how many units you use (flat). The only way to change this line is to change your phase, sanctioned load, or connection type.
Electricity dutyStatutory₹40.50+
A 5% state government levy on the energy charge — set by statute, not by the DISCOM, and not reducible by usage pattern.
What's included in your bill
| Component | What it is | Typical range |
|---|---|---|
| Energy charge | Units × slab rate, telescopic | ₹2.00–₹7.60/unit |
| Fixed charge | Flat, independent of usage | ₹70 |
| Electricity duty | State government levy | 5% |
How to read your meter
Digital meters show a running total in kWh ("units") on an LCD display — write down the number before the decimal point. To find your consumption for a billing period, subtract your previous reading from your current reading; that is exactly what the "Meter reading" mode in the calculator above does for you. Analog meters use a set of dial gauges read left to right — note the number the pointer has just passed on each dial.
☀️ See how much solar could save you in Assam
Rooftop solar can cut this bill sharply. Check your payback period and PM Surya Ghar subsidy in under a minute.
Tools that cut your bill
Swap CFL for LED bulbs
Replacing a 15W CFL with a 9W LED bulb, run 6 hrs/day, saves about ₹104.86/year at Assam's top slab rate (₹7.98/unit) — per bulb.
Upgrade to a 5-star AC
A 1.5 ton 5-star AC vs 3-star, run 6 hrs/day, saves about ₹4,448.16/year in Assam.
See the full comparison →How does APDCL compare?
APDCL
Assam
Top slab rate
₹7.60/unit
Base slab
₹2.00
Slabs
4
Billing
monthly
Duty
5%
WBSEDCL
West Bengal
Top slab rate
₹6.81/unit
↓ 10% cheaper than APDCL
Base slab
₹4.10
Slabs
5
Billing
quarterly
Duty
0%
MePDCL
Meghalaya
Top slab rate
₹6.50/unit
↓ 14% cheaper than APDCL
Base slab
₹4.50
Slabs
3
Billing
monthly
Duty
5%
TSECL
Tripura
Top slab rate
₹6.00/unit
↓ 21% cheaper than APDCL
Base slab
₹0.00
Slabs
3
Billing
monthly
Duty
5%
Top Slab Rate Comparison
APDCL's top domestic slab rate is ₹7.60/unit — cheaper than WBSEDCL (₹6.81/unit), — cheaper than MePDCL (₹6.50/unit), — cheaper than TSECL (₹6.00/unit). Billing cycles also differ: APDCL bills monthly, while WBSEDCL bills quarterly, MePDCL bills monthly, TSECL bills monthly.
Tips to reduce your APDCL bill
- Where practical, keep usage below your next slab threshold — the marginal units above ₹7.60/unit cost the most.
- For high-usage households, rooftop solar can offset your most expensive top-slab units — see the solar section above.
Net metering explained
Net metering lets a rooftop solar system export surplus power back to the grid through your existing meter, which runs in reverse. At billing time, your DISCOM credits the exported units against what you drew from the grid — you're billed only for the net difference. Combined with telescopic slabs, this typically offsets your most expensive units first. Estimate your solar payback →
About APDCL
The Assam State Electricity Board (ASEB) was unbundled in December 2004, as part of state power sector reforms, into one generation company, one transmission company and three distribution companies. Assam Power Distribution Company Ltd (APDCL) was incorporated on 23 October 2009 to consolidate and take over ASEB's distribution business.
APDCL is the sole distribution licensee for the entire state, serving over 33 lakh consumers from Sadiya in the east to Dhubri in the west, including Guwahati.
Does APDCL supply electricity to Guwahati?
Yes. APDCL is Assam's single, statewide distribution company, covering Guwahati and every other part of the state — there is no regional split to check.
How to check and pay your bill
- 1Visit the official APDCL portal
- 2Enter your Consumer Number to fetch your current bill
- 3Verify the amount and pay via UPI, card or net banking
- 4Save the payment receipt for your records
Official portal
apdcl.org (official APDCL portal)
Helpline
1912 (24×7, within Assam)
Frequently asked questions
Is the Assam electricity tariff telescopic?
Yes. Assam charges telescopically: each slab is billed at its own rate, so moving up a slab does not re-price your cheaper units.
What is the fixed charge for a Assam domestic connection?
The fixed charge is a flat ₹70/month.
How accurate is this Assam bill estimate?
It uses the published domestic slab rates and is a close estimate, not a billing-grade figure. Always confirm against your official APDCL bill.
Does APDCL supply electricity to all of Assam?
Yes. APDCL is the sole distribution licensee for the entire state, serving over 33 lakh consumers from Sadiya to Dhubri, including Guwahati — there is no regional split.
How do I check or pay my APDCL bill online?
Pay via the official portal at apdcl.org. For queries, call the 24×7 toll-free helpline 1912 (within Assam).
What is APDCL, and how did it form?
The Assam State Electricity Board (ASEB) was unbundled in December 2004 into five companies — one generation, one transmission and three distribution entities. Assam Power Distribution Company Ltd (APDCL) was incorporated on 23 October 2009 to take over ASEB's distribution business statewide.