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Running a laptop continuously for a 30-day month uses 14.4–43.2 kWh if its average power draw at the wall is 20–60 W. Using a Chandigarh domestic-tariff schedule as an illustration, that is about ₹40–₹233 in energy charges—not a national rate or a prediction of your full bill. Your best estimate comes from measuring the laptop’s actual wall draw and applying your electricity provider’s current tariff.
How much electricity does a laptop use in a month if it runs all day?
A 30-day month has 720 hours. Multiply the laptop’s average power draw in watts by 720, then divide by 1,000 to get monthly kilowatt-hours (kWh), also called units on many electricity bills.
30-day energy (kWh) = average wall draw (W) × 720 ÷ 1,000
Each 1 W of average draw adds 0.72 kWh over 30 days. These examples are arithmetic scenarios, not measurements, claims about a typical laptop, or streaming benchmarks.
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| Assumed average wall draw | Energy per day | Energy per 30 days | Energy charge at ₹2.75/kWh | Energy charge at ₹5.40/kWh |
|---|---|---|---|---|
| 20 W | 0.48 kWh | 14.4 kWh | about ₹40 | about ₹78 |
| 40 W | 0.96 kWh | 28.8 kWh | about ₹79 | about ₹156 |
| 60 W | 1.44 kWh | 43.2 kWh | about ₹119 | about ₹233 |
The rates in the table come from the Central Electricity Authority’s 2025 compilation of a Chandigarh domestic schedule effective 1 August 2024: ₹2.75/kWh for 0–150 kWh per month, ₹4.80/kWh for 151–400 kWh, and ₹5.40/kWh above 400 kWh. The estimates use the low and high listed rates as simple illustrations; they are not India-wide rates. Your applicable band and bill structure matter. See the CEA compilation.
Why your actual bill may differ
There is no single household electricity rate for all of India. Retail tariffs, consumer categories, billing structures, and possible subsidies vary by state or union territory and electricity provider. Check your latest bill or your local DISCOM or regulator’s current tariff schedule for the relevant marginal energy charge. The Ministry of Power describes the role of state regulators and subsidies in its framework on electricity financial sustainability and affordability.
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The table estimates only energy charges. Fixed charges, duties, adjustments, tariff slabs, and subsidies can affect the total bill. Keep these components separate when estimating the cost of adding continuous laptop use; do not treat an energy-charge calculation as the amount your bill will rise.
How to calculate your own 24/7 streaming cost
- Find your applicable tariff. Use your current electricity bill or the local DISCOM or regulator schedule. Identify your consumer category, billing period, and the marginal per-unit energy charge relevant to additional use.
- Measure average power at the wall. Measure the laptop and charger together while playing YouTube under representative conditions, including normal screen brightness and network use. A suitably rated plug-in energy meter or energy-monitoring smart plug can help. This is measurement guidance, not an endorsement of a particular product.
- Calculate energy use. If the meter gives average watts, use daily kWh = watts × 24 ÷ 1,000 and 30-day kWh = watts × 720 ÷ 1,000. If it records kWh directly, use the reading for the period measured and scale it to your expected runtime.
- Estimate the energy-charge component. Multiply the estimated kWh by the applicable marginal energy rate. Account separately for other bill components that apply to your household.
If you cannot measure the draw, calculate several explicitly labelled wattage scenarios rather than presenting one as your laptop’s actual consumption. Do not use the charger’s maximum output rating as the laptop’s average draw: the rating does not tell you how much energy the computer uses during playback.
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What changes a laptop’s power draw?
Power settings, energy saver, screen brightness, and display or sleep settings can affect Windows energy use. Hardware and workload matter too; continuous playback keeps the computer awake and using its network connection. Microsoft documents these adjustable settings but does not provide a universal wattage for 24/7 YouTube streaming. Microsoft’s Windows 11 power settings guidance explains the relevant controls.
Battery-life figures are not a substitute for a wall-power measurement. Microsoft’s Surface battery testing mixes active use and modern standby, and its estimated performance varies with settings and usage. Those battery-life results do not establish the wall draw of a laptop continuously playing YouTube. Read Microsoft’s Surface battery testing notes.
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Will streaming YouTube all day make your electricity bill high?
The answer depends chiefly on the laptop’s measured average draw and your applicable marginal tariff. In the illustrative 20–60 W scenarios above, continuous operation adds 14.4–43.2 kWh of energy over 30 days. Compare that with your household’s consumption and tariff schedule, and remember that the calculation covers energy charges rather than the full bill.
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Quick Recap
Best Value
- Spacious Design: Measuring 21.1" wide and 12" deep, our lap desk comfortably fits most laptops up to 15.6". Extra room for accessories ensures convenience.
- Enhanced Functionality: Packed with handy features, including a 5x9" precision tracking mouse pad and a built-in phone slot for seamless work or video calls. Plus, enjoy laptop support with the integrated device ledge.
- Cool Comfort: Enjoy a stable surface with our lap desk's dual bolster cushion, designed for comfort and airflow, keeping your lap cool during extended use.
- Durable Surface: Work with confidence on our lap desk's solid surface, featuring a blush pink color, ensuring optimal air circulation to prevent your laptop from overheating.
- On-the-Go Convenience: With an integrated handle and lightweight design (2.14 lbs), our lap desk is portable for travel or moving around the house, offering flexibility in any space.
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