ebbillcalc

15 litre geyser electricity consumption

Units a day and a month for a 15 L storage geyser, by water temperature and star rating, and what it adds to your bill.

  • BEE star-label figures
  • Every state’s slabs and schemes
  • Updated 15 October 2026
Heat one tank0.611units, from 15 °C
Units a month18one tank a day
Left on all day+0.419units a day, 3 star
Typical cost₹123 a monthadds for a home on 250 units; half of states ₹92–₹143

Work it out for your home

15 L tank heated once a day

Heated to 50 °C.

Cold waterUnits a dayUnits a month
10 °C0.720.9
15 °C0.6118.3
20 °C0.5215.7
25 °C0.4413.1

Standing loss if left on (BEE, kWh per 24 h)

The ceiling of each star band in BEE Table 3.5.

StarUnits a dayUnits a month
1 star0.50715.2
2 star0.46113.8
3 star0.41912.6
4 star0.38111.4
5 star0.34610.4

What it adds to your bill, state by state

For 15 L tank heated once a day from 15 °C (18 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.

State or UTHome on 100 unitsHome on 250 units
Andaman & Nicobar Islands₹135₹196
Andhra Pradesh₹81₹158
Arunachal Pradesh₹79₹79
Assam₹76₹130
Biharwith Government of Bihar tariff subsidy, Mukhyamantri Vidyut Upbhokta Sahayata Yojana: 125 units free₹0₹74
Chandigarh₹68₹86
Chhattisgarhwith Mukhyamantri Urja Rahat Jan Abhiyan (M-URJA)₹40₹108
Dadra & Nagar Haveli and Daman & Diu₹49₹62
Delhiwith Government of NCT of Delhi electricity subsidy₹0₹93
Goa₹56₹75
Gujarat₹124₹143
Haryanamore at low use: the appliance takes the home past a free-units or subsidy limit₹103₹94
Himachal Pradesh₹98₹106
Jammu & Kashmir₹44₹76
Jharkhand₹133₹133
Karnatakawith Gruha Jyothimore at low use: the appliance takes the home past a free-units or subsidy limit₹147₹120
Kerala₹116₹436
Ladakh₹42₹74
Lakshadweep₹95₹139
Madhya Pradeshwith Atal Griha Jyoti Yojana₹102₹157
Maharashtra₹269₹269
Manipur₹112₹128
Meghalaya₹91₹92
Mizoram₹128₹148
Nagaland₹132₹142
Odisha₹85₹103
Puducherry₹83₹123
Punjabwith Free supply up to 300 units a month (600 bi-monthly)₹0₹0
Rajasthanwith Mukhyamantri Nishulk Bijli Yojanamore at low use: the appliance takes the home past a free-units or subsidy limit₹226₹154
Sikkim₹79₹88
Tamil Nadubilled every 2 months₹85₹386
Telanganamore at low use: the appliance takes the home past a free-units or subsidy limit₹194₹139
Tripura₹125₹132
Uttar Pradesh₹99₹108
Uttarakhand₹94₹129
West Bengalbilled quarterlywith Government of West Bengal domestic subsidy₹121₹124

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.