Measure first, then automate. Most people guess wrong about what is consuming power in their home, and automating the wrong thing produces a saving too small to notice. A single energy-monitoring plug moved around the house for a week costs almost nothing and tells you exactly where to spend.
Where the consumption usually is
In most Egyptian homes the order is broadly: air conditioning, water heating, refrigeration, lighting, then everything else.
Two things follow from that. Automating lighting produces a small saving. Automating water heating and air conditioning produces a large one. Start where the consumption is.
Water heating
The most reliable saving available, because the waste is structural: a heater left switched on maintains a hot tank for twenty-four hours to serve perhaps two.
Put it on a schedule matched to when the household actually showers, with remote override for the exceptions. Nobody experiences a cold shower and the standby loss largely disappears.
Air conditioning
The saving here comes from run time, not from the unit itself.
- Pre-cool rather than leave running. Fifteen minutes before arrival, triggered remotely, beats eight hours of an empty room.
- Overnight cutoff. A schedule that stops the unit a couple of hours after bedtime removes the single most common source of waste.
- Door and window sensors. An automation that alerts or switches off when a balcony door is left open stops you cooling the street.
Standby loads
Individually trivial, collectively real — televisions, set-top boxes, chargers, monitors, routers for equipment nobody is using.
A smart plug on an entertainment cluster, switched off overnight, removes the whole group at once. Do not include anything that needs to stay on, such as a refrigerator or a network router the cameras depend on.
Lighting
Modest savings, but easy and permanent:
- Outdoor lights on a sunrise/sunset schedule rather than a manual habit.
- Motion sensors in stairwells, corridors and storerooms — places lights are routinely left on.
Measure properly
An energy-monitoring plug reports actual consumption over time, not a rating from a label. Leave it on one appliance for several days, note the figure, then move it.
After a week of this you will have a ranked list of what to address, based on your home rather than on general advice — including at least one appliance consuming far more than you assumed.
What not to expect
Automation does not make an appliance more efficient. It reduces how long inefficient things run. An old air conditioner on a smart schedule is still an old air conditioner, and where a unit is genuinely inefficient, replacement saves more than any automation will.
Set expectations accordingly: the gains come from eliminating waste, and in most homes there is a lot of it.
See smart switches, sensors and SONOFF devices.
Frequently asked questions
Do smart devices use power themselves?
A very small amount, far outweighed by what they save on a meaningful load.
What is the single best first purchase?
An energy-monitoring plug, so your next purchase is informed.
Will a smart plug work with my air conditioner?
Only if it is rated for the load. For most split units, use an infrared controller instead.