🧾 How to Calculate How Much Electricity Your Devices Use (and How Much It Costs Monthly)

⚡ Most people don’t know how much electricity their devices actually consume

Electrical devices run daily, but few people understand their real cost.
Even small devices can add up significantly over time.

🔎 What power (W – watts) means

Each device has a power rating, for example:

• TV → 80–150W

• computer → 300–600W

• router → 5–15W

This is consumption per hour.

🧠 The simple formula

👉 Energy (kWh) =
power (W) ÷ 1000 × hours of use

📊 Example:

TV 100W, used 5 hours per day:

100 ÷ 1000 = 0.1 kW
0.1 × 5 = 0.5 kWh per day

👉 Monthly:
0.5 × 30 = 15 kWh

💸 Cost calculation

If 1 kWh ≈ €0.15:

15 × 0.15 = €2.25 per month

⚠️ High consumption devices

• water heaters

• ovens

• air conditioners

• dryers

• high-performance PCs

😏 Hidden consumption

Even when turned off, devices may consume power:

• TVs (standby)

• chargers

• routers

• receivers

👉 known as “phantom load”

🧠 How to reduce electricity usage

• unplug unused devices

• use power strips with switches

• use smart plugs

• monitor usage

🛠️ The most accurate way

👉 use a power meter

It shows:

• real consumption

• kWh usage

• cost

🧩 Conclusion

Energy control starts with measurement.
Even small adjustments can significantly reduce monthly costs.