How to Save Electricity at Home: What Actually Cuts the Bill

How to save electricity at home: the short answer

To save electricity at home, cut the watts and cut the hours: fit LED lamps sized to the room, switch devices off at the wall instead of leaving them on standby, use a proper fan regulator, buy appliances with more BEE stars, and run the AC and geyser for less time at gentler settings.

Most of it is a lamp, a switch or a habit, not a wiring job. This guide shows the sums step by step, so you can check any saving against your own bill.

We have made switches, sockets, regulators and LED lights at our works in Marol, Andheri East, Mumbai since 1995. We will tell you what is on our products; we will not promise a figure off your bill, because that depends on your appliances, hours and tariff.

How do you calculate the units an appliance uses?

An appliance’s units are its wattage multiplied by the hours it runs, divided by 1000, because one unit on your electricity bill is one kilowatt-hour, which means a 1000-watt load running for a full hour, and the rate per unit on your bill turns that into rupees.

Units = W × hours ÷ 1000 The wattage is on the appliance’s rating plate, the lamp’s cap or the carton. Your rate, not ours Your tariff is on your bill and often rises in slabs, so the last units of the month can cost the most.

Step 1 A 9 W LED lamp for 5 hours a day: 9 × 5 = 45 watt-hours. Step 2 Over 30 days: 45 × 30 = 1,350 watt-hours. Step 3 Divide by 1000: 1.35 units a month. Step 4 At an example rate of ₹8 a unit: 1.35 × 8 = ₹10.80 a month.

Hours matter as much as watts: a small load running all day can outrun a big one used for minutes.

How to save electricity at home: lighting

To save electricity on lighting at home, replace any remaining old bulbs and tubes with LEDs of the lowest wattage that still lights the room well, switch lights off in empty rooms, and use a very low-wattage night lamp instead of leaving a main light on overnight, because lighting runs for hours every single evening.

Our LED lamp range runs in steps: 9 W 12 W 15 W 18 W 23 W and 30 W, with Sumo lamps at 40 W and 50 W for large spaces. At MRP the 9 W lamp (code 1065) is ₹70, the 12 W (1066) ₹145 and the 15 W (1067) ₹212.

Old lamp? Subtract the LED’s wattage from the one printed on the lamp you remove, and run the difference through the formula. Lumens Choose by light output on the pack; over-lighting a small room wastes units.

LED panels, downlights and night lamps for ceilings

For false ceilings the same rule applies: choose the wattage the room needs, not the largest one sold. Small steps let a corridor and a living room each get the right size.

Downlight 3 W 5 W 6 W Our LED downlights (codes 1010, 1011, 1012) are ₹100, ₹135 and ₹160 at MRP. Panel 10 W 15 W 22 W The Ultra Prime panels (1021, 1022, 1023) are ₹300, ₹400 and ₹580. 0.5 W The LED night lamp (1061) is ₹40.

IS 10322 (Part 5/Sec 2) Our catalogue lists the panels against this standard and our lamps against IS 16102 (Part 1). See the full LED lights range with codes and MRP.

Does standby use electricity? Switch off at the wall

Yes, many devices keep drawing a small amount of power on standby, because a remote receiver, clock, charger circuit or network light stays alive after you press the remote, and switching off at the wall cuts that draw completely, which matters because standby runs all 24 hours.

Check the manual A device’s standby wattage, where stated, is in its manual or on its label. We have not measured any, so here is the arithmetic per watt: 1 W × 24 h × 30 days = 720 watt-hours = 0.72 units a month, or 8.76 units a year, for every watt left running.

Chargers left in TV on remote Set-top box are the usual always-on suspects. Off at the board The fix costs nothing: switch off at the wall at bedtime or when you leave the house.

Switched sockets and spike guards make switching off easy

Switching off at the wall only becomes a habit if the switch is easy to reach. A socket with its own switch beside it, or a spike guard within arm’s length, turns “unplug everything” into one press.

Switch + socket Our VIYONA switch-socket combined units include 156 6A S.S. combined at ₹83, and the double S.S. combined 171 6A at ₹270 and 172 16A at ₹390. In VIZA, V285 10A universal S.S. combined is ₹180 and V1283, listed with indicator and safety, ₹230.

Spike guard For a TV corner or desk, our VIYONA spike guards start at ₹370 (code 291, 1 × 4, 1.5 m). Keep it reachable If you have to move furniture to reach it, it will stay on.

Our guide to switch sockets vs traditional sockets explains why a switched point is also safer to plug into. If chargers are your always-on problem, a USB socket on the switch board removes loose adapters.

Does a fan regulator save electricity? Electronic vs resistor

An electronic fan regulator does reduce the power drawn when you turn the fan down, but an old resistor-type regulator largely does not, because it slows the fan by turning the surplus into heat inside the regulator, which is why those old regulators feel warm at low speed.

Resistor regulator Bulky, warm at low settings, usually behind an older board. Electronic regulator Controls speed electronically instead of burning off the surplus, so turning the fan down means drawing less. Warm box If the regulator housing gets hot at low speed, it is worth replacing.

Our catalogue lists VIYONA 137 mini 4-step regulator at ₹215 and VIYONA 138 medium 5-step at ₹225 under “electronic dimmer/fan regulator”; see the electronic fan regulator page, and our guide to fan regulator types for step, stepless and resistor designs.

Energy efficiency rating of electrical appliances: the BEE star label

The energy efficiency rating on an Indian appliance is the Bureau of Energy Efficiency star label: more stars means the appliance uses less electricity for the same job than lower-rated models of the same type and size, and many labels also print the expected units per year, which is the figure to compare.

1 to 5 stars The scale on the label. More stars Better efficiency within its own category. Same type and size A 5-star small fridge and a 5-star large one do not use the same units, so compare like with like. Label year Star bands are revised from time to time; the label shows its validity period.

Units per year × your rate Multiply each model’s annual units by your rate (₹8 if you are just trying the sum), subtract, and you have what the extra stars save a year. Divide the price gap by that saving to see how many years the dearer model takes to pay back.

No label A labelled category with no label on the box is a reason to ask questions.

Energy saving electrical appliances: which ones matter most

The appliances that matter most for saving electricity are usually the ones that heat or cool, such as the air conditioner, geyser, room heater and iron, plus anything that runs all day like the refrigerator, because they either draw a large wattage or run for many hours.

Heat and cool AC, geyser, heater, iron: big wattages, so minutes matter. Always on Refrigerator, router, set-top box: 24 hours a day. Light loads LED lamps, chargers, a fan on low: small wattage, so hours matter more.

How to save electricity at home in summer

To save electricity at home in summer, run the air conditioner at a moderate temperature rather than its coldest setting, use its timer or sleep mode, keep doors and curtains closed, clean its filters, and let a ceiling fan move the cool air so the room feels comfortable without the AC working as hard.

Moderate setting Every degree colder makes the compressor run longer. Timer on An AC that switches off in the early morning saves hours nobody notices. Dirty filter A clogged filter makes the unit run longer for the same cooling. Sun on glass Close curtains on sun-facing windows by day.

Fan with AC A ceiling fan’s rating plate usually shows far fewer watts than an AC’s; check both and run the formula. Hot switch plate An AC socket or switch that feels warm is a wiring warning. Stop using it and call a licensed electrician; see our guide to a hot or sparking switch socket.

How to save electricity with a geyser

To save electricity with a geyser, heat water only shortly before you need it, switch it off once it has heated instead of leaving it on all day, keep its thermostat at a moderate setting, and fit a switch with an indicator lamp so everyone in the house can see at a glance when it is still on.

Left on all day A storage geyser keeps reheating as the tank cools, using units when nobody is bathing. Indicator switch We make KEMPS K108 20AX 1-way switch with indicator at ₹120 (white) and VIZA V1213 20A 1-way with indicator at ₹119. DP switch A double-pole switch disconnects both live and neutral: VIZA V1250 32A DP with indicator is ₹330 and KEMPS K116 ₹360. See our KEMPS and VIZA switches and sockets.

Star label Storage water heaters carry the BEE star label, so compare units per year when you replace one.

Energy efficient electrical devices, room by room

The energy efficient electrical devices worth fitting in each room are the ones that match its long-running loads: LED lighting everywhere, a proper regulator on every fan, a switched point where devices sit on standby, and an indicator switch wherever a heavy appliance could be forgotten.

Living room LED panel or lamps, electronic regulator, a switched point or spike guard for the TV corner. Bedroom A 0.5 W night lamp instead of a main light overnight. Kitchen LED lighting over the counter; heavy appliances on their own 16A points. Bathroom Indicator or DP switch for the geyser, outside the wet area. Study A switched socket or USB socket so chargers are not left live.

“Saves 70%” Treat any savings percentage with no wattage, hours or tariff behind it with suspicion. Wattage and MRP printed What you can check is the product’s wattage, code and price, and the sum you do yourself.