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West Bengal • Effective 2025-04-01

CESC Kolkata Per Unit Electricity Rate (2026)

CESC Ltd. — Kolkata. Domestic per-unit rates from ₹5.09 to ₹10.74 per kWh — plus commercial and industrial slabs, FAC and duty. Latest SERC-approved tariff.

Slab 1 rate

₹5.09

first 25 units

Top slab

₹10.74

per unit

Eff. @ 100u

₹7.07

all-in /unit

Full CESC Kolkata bill calculator All West Bengal rates

CESC Kolkata domestic slab rates

Energy charge per unit — the headline price you see on your bill. Excludes fixed, FAC and duty.

Slab (units / month) Energy rate (₹/unit)
1 – 25 ₹5.09
26 – 60 ₹5.52
61 – 100 ₹6.04
101 – 150 ₹6.94
151 – 300 ₹8.32
301 – 600 ₹9.95
Above 600 ₹10.74
Fixed charges
₹35/kW/mo
FAC / FPPCA
₹0.60/unit
Electricity duty
0%
Telescopic
Yes

Commercial (LT) per-unit rates

For shops, offices and small businesses on a LT-2 / commercial connection.

Slab (units / month) Energy rate (₹/unit)
1 – 60 ₹8.35
61 – 300 ₹9.60
Above 300 ₹10.85
Fixed charges
₹35/kW/mo
FAC / FPPCA
₹0.60/unit
Electricity duty
0%
Telescopic
Yes

Industrial (LT) per-unit rates

For LT industrial consumers — typically a flat per-unit rate.

Slab (units / month) Energy rate (₹/unit)
Above 0 ₹7.95
Fixed charges
₹35/kW/mo
FAC / FPPCA
₹0.60/unit
Electricity duty
0%
Telescopic
No

Effective CESC Kolkata per-unit rate by consumption

All-in rate (energy + fixed @ 2 kW + FAC + duty) at common monthly consumption levels. Excludes subsidy.

At 50 units/month

₹7.61

≈ ₹380 bill

At 100 units/month

₹7.07

≈ ₹707 bill

At 150 units/month

₹7.23

≈ ₹1,084 bill

At 200 units/month

₹7.65

≈ ₹1,530 bill

At 300 units/month

₹8.07

≈ ₹2,422 bill

At 500 units/month

₹9.06

≈ ₹4,532 bill

At 1000 units/month

₹10.12

≈ ₹10,123 bill

For your actual figure with your sanctioned load and subsidy eligibility, use the CESC Kolkata bill calculator.

About CESC Kolkata tariff structure

CESC Ltd. — Kolkata bills domestic consumers using a telescopic slab structure. Each slab applies only to the units within that range, so adding a few more units never reprices your earlier (cheaper) units.

Beyond energy charges, the CESC Kolkata bill includes a fixed charge of ₹35/kW/month on your sanctioned load, an FAC pass-through of ₹0.60/unit (revised monthly), and West Bengal electricity duty of 0%.

We verify CESC Kolkata rates against the latest SERC tariff order quarterly. Last verified: 2026-04-22. Original source: official tariff order.

Other West Bengal DISCOMs

Compare per-unit rates across West Bengal.

WBSEDCL

West Bengal State Electricity Distribution Co. Ltd.

From ₹5.26/unit →

CESC Kolkata per-unit rate — common questions

Answers to the most common electricity bill questions in India.

What is the per unit electricity rate of CESC Kolkata in 2026?
CESC Kolkata domestic energy charges start at ₹5.09/unit for the first 25 units and rise to ₹10.74/unit at the highest slab. Slabs are telescopic — only units within each slab are billed at that rate. See the full slab table on this page. Effective 2025-04-01.
How much will 1 unit of electricity cost on my CESC Kolkata bill?
1 unit (1 kWh) is billed at the slab rate that applies to your monthly consumption — starting at ₹5.09/unit. The effective rate on your bill is higher because of fixed charges (₹35/kW), FAC, and electricity duty (0%). At a 100-unit monthly consumption, the all-in rate is roughly ₹7.07/unit.
What is the commercial per-unit rate for CESC Kolkata?
CESC Kolkata commercial (LT) energy charges start at ₹8.35/unit and go up to ₹10.85/unit. Commercial fixed charges are ₹35/kW/month — typically higher than domestic. Industrial (LT) is usually a flat ₹7.95/unit.
What is the FAC and electricity duty for CESC Kolkata?
CESC Kolkata currently passes through ₹0.60/unit as Fuel Adjustment Charge (FAC / FPPCA — varies monthly). West Bengal electricity duty is 0% on the energy + fixed + FAC base. These add to your effective per-unit cost beyond the headline slab rate.
How often does CESC Kolkata change its per-unit rates?
Slab rates are revised through the annual SERC tariff order — typically effective from 1 April each financial year. The current CESC Kolkata rates are effective from 2025-04-01. FAC is revised more frequently (often monthly) to reflect fuel cost movements.