A 50-watt PC running continuously uses 1.2 kWh a day, 36 kWh in a 30-day month, and 438 kWh in a 365-day year. The energy-charge cost depends on your current utility tariff, household category, consumption slab and subsidy—not on one national electricity rate. The rupee figures below are energy-only illustrations, not estimates of a complete household bill.
How much electricity does a 50-watt PC use 24/7?
Convert watts to kilowatts, then multiply by the time the computer runs:
- 50 W ÷ 1,000 = 0.05 kW.
- 0.05 kW × 24 hours = 1.2 kWh per day.
- 0.05 kW × 24 hours × 30 days = 36 kWh in a 30-day month.
- 0.05 kW × 24 hours × 365 days = 438 kWh in a 365-day year.
These calculations assume the PC draws an average of 50 W at the wall throughout the period. They do not establish the consumption of a particular computer or include a monitor, router, capture hardware or other equipment unless those devices are included in the 50 W assumption.
Measure your own setup
A plug-in electricity usage monitor can help you replace the assumed draw with a measurement of the connected equipment. Measure the PC alone if that is what you want to estimate; include other devices only if you want their consumption counted too. No particular monitor has been evaluated here.
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How to calculate the electricity cost
- Find the applicable tariff. Check your latest bill and your utility’s current residential tariff schedule. Match the state or Union Territory, utility, consumer category, billing period and subsidy that apply to your home.
- Calculate the extra consumption. For the stated assumption, add 36 kWh to a 30-day billing period. For a different period, use 1.2 kWh for each day the PC runs.
- Apply the rate or slab rates. For a single applicable energy rate, multiply the added kWh by that rate. For a telescopic tariff, split the added units among the slabs they fall into and multiply each portion by its own rate.
- Separate energy charges from the rest of the bill. Fixed charges, electricity duty, fuel adjustments, surcharges and subsidies can affect the amount payable. Their treatment depends on the applicable bill and tariff order.
To estimate the PC’s extra cost accurately, compare the bill with and without those additional units. A fixed charge that already applies to the household may not rise because the PC was added; variable duties or other adjustments may. Do not assume all bill components are calculated the same way as the energy charge.
Illustrative Indian tariff examples
The examples below use published official schedules. The monthly totals are calculations for 36 kWh, not figures published by the agencies. They cover energy charges only, before other bill items. The FY 2024-25 examples are from the Central Electricity Authority’s 2025 compilation; they are not necessarily the rates for a reader’s next bill.
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| Jurisdiction and source | Applicable published energy rate | Energy charges for 36 kWh | Qualification |
|---|---|---|---|
| Assam Domestic-A — Central Electricity Authority, 2025 | ₹6.24 per unit after subsidy, 0–120 units/month | About ₹224.64 | FY 2024-25 compilation; selected residential category and slab. |
| Bihar DS-II Demand Based — Central Electricity Authority, 2025 | ₹4.12 per unit after subsidy, 0–100 units | About ₹148.32 | FY 2024-25 compilation; selected residential category and slab. |
| Himachal Pradesh Domestic — Central Electricity Authority, 2025 | ₹2.07 per unit after subsidy, 0–125 kWh/month | About ₹74.52 | FY 2024-25 compilation; selected residential category and slab. |
| Chhattisgarh domestic — Chhattisgarh State Electricity Regulatory Commission, FY 2026-27 schedule | ₹4.40 for 0–100 units; ₹4.50 for 101–200; ₹6.00 for 201–400; ₹7.00 for 401–600; ₹8.80 above 600 | ₹158.40 before applicable subsidy or other bill items, if the 36 added units fall in the first slab | The order says energy charges are telescopic and fixed charges are monthly minimum charges. Domestic consumers may receive subsidy under State Government orders. |
| Lakshadweep LTDS-II domestic — Department of Electricity, FY 2026-27 | ₹3.55 for 0–100 units; ₹5.30 for 101–200; ₹7.70 for 201–300; ₹10.05 for 301–400; ₹13.05 above 400 | ₹127.80 before other bill items, if the 36 added units fall in the first slab | Union Territory example. The schedule also lists a fixed charge of ₹25 per kW/month. |
In a telescopic schedule, the bill’s existing consumption matters: the added units may cross a slab boundary. The Chhattisgarh order describes this approach with the words “Energy Charges are telescopic.” A 36-unit addition wholly within the first slab is different from 36 units split across two slabs.
The Central Electricity Authority says its annual tariff publication analyzes State Electricity Regulatory Commission tariff orders; subsidy and duty information is collected from state departments and utilities. Its readable state table cited here covers FY 2024-25. The newer Chhattisgarh and Lakshadweep examples are specific FY 2026-27 schedules, not a like-for-like survey of India.
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Why there is no single state-by-state answer
The rate that matters to you can vary by utility, residential category, monthly consumption slab and subsidy. Tariff examples from different years and jurisdictions should not be used to rank states from cheapest to most expensive. A fair comparison would need current rates for matching categories, tariff years, slab treatment, subsidy and bill components across utilities.
For your own estimate, use the current tariff order or bill from your utility rather than assuming a published example still applies. If the bill has a subsidized effective rate, distinguish it from the pre-subsidy rate and check how the subsidy is applied.
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Does the 50-watt assumption match a 24/7 YouTube setup?
Not necessarily. The calculation answers what a continuous 50 W load costs; it does not establish how much a particular PC consumes while streaming. The PC’s draw can differ from the assumption, and a display or network equipment adds consumption if it is powered as part of the setup. Measure the equipment you intend to include, then repeat the calculation with its average wall draw.
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If the cost question comes from keeping a YouTube channel live while a home PC runs continuously, StreamNeo is a cloud service that loops uploaded videos to YouTube. Upload a recording or build a playlist, add your YouTube stream key once, and go live; your computer and home connection do not have to stay on. It is for uploaded videos, not a live camera feed.
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Monthly pricing: $9.99 per month. StreamNeo does not remove electricity use from any equipment you choose to keep running at home, but it means a home PC need not run the stream.
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