Geyser electricity cost per month

Work it out for your home

Units to heat one tank from cold water to 50 °C

Energy to heat water: litres × temperature rise × 0.001163 units. Cold water in North India in winter is often 10–15 °C; in the South it rarely falls below 20–25 °C.

Extra units a day if the geyser stays on all day (BEE standing loss)

BEE rates geysers by the heat a full tank loses in 24 hours. Switching the geyser off after use avoids most of this.

What it adds to your bill, state by state

For 25 L tank heated once a day from 15 °C to 50 °C (31 units a month), on each state’s current tariff with the government schemes that apply to every home. Per month; two-monthly and quarterly bills are shown as a monthly average. Duty and fuel surcharge are not included.

Why the cost differs so much

Your electricity is charged in slabs. An appliance adds its units at the top of what you already use, where each unit costs the most, and in some states it can push the whole bill into a dearer table or past the limit of a free-units scheme. That is why the same appliance costs very different amounts in different states, and in different homes in the same state.

Method and sources

• BEE storage water heater star table 3.5, valid 1 July 2026 to 31 December 2027 (S.O. 5970(E), 23 December 2025): standing loss in kWh per 24 hours
• Water heating: 1 litre needs 4.186 kJ per °C (specific heat of water); set temperature assumed 50 °C

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