To measure how much electricity your PC uses while streaming YouTube with OBS, connect the complete PC to a plug-in watt-hour meter and take readings while the stream is running. Start recording once the computer and stream have settled into their normal workload, then note both the meter reading and the conditions you measured.
The meter reports the connected equipment’s input from the wall. It does not isolate OBS, reveal the PC’s internal DC power, or tell you how much electricity the encoder alone used. A useful result is therefore a measurement of your whole PC under a clearly described streaming workload, not a universal figure for OBS.
What you need for a wall-side measurement
Use a plug-in watt-hour meter that shows power in watts and, ideally, accumulated energy in kilowatt-hours (kWh). Check that its plug type and electrical rating suit your outlet and the PC’s power supply. This is a category recommendation, not an endorsement of a particular model; Microsoft’s guidance on measuring device power describes using a watt-hour meter at the wall and taking a steady-state measurement.
You will also need the PC and the usual streaming setup: OBS, the intended YouTube stream, and the content you normally broadcast. If you use a game, animated visuals, a browser source or several audio and video sources, keep them active during the measurement. Those are part of the workload you want to understand.
A notebook or a simple spreadsheet helps make the reading repeatable. Record the start and end times, watts, accumulated kWh if available, and enough detail about the stream to reproduce it. The meter itself may retain energy readings, but notes matter because a number without its settings and duration is difficult to interpret later.
If you are deciding between a PC-based stream and a small always-on system, measure the equipment you actually intend to run. The comparison with a fanless mini PC’s electricity use is most useful when you know what each setup includes and when each was measured.
Connect the complete PC to the meter
Plug the watt-hour meter into the wall outlet, then plug the PC’s power supply into the meter. The meter should be between the wall and the PC so that it can register the PC’s mains input. Do not exceed the meter’s rating, and do not use an adapter or extension arrangement that is unsuitable for the outlet or equipment.
Decide what “the PC” means for your measurement before plugging anything in. If the goal is the computer alone, connect only the computer’s power supply to the meter. Leave the monitor, speakers, router, lights and other desk devices outside the measured connection. If the goal is the whole streaming desk, connect the equipment you want counted, and label the result accordingly. A meter can only report the equipment supplied through it.
This distinction is easy to miss when a PC and monitor share a power strip. If both are downstream of the meter, the reading includes both; it is not a PC-only result. Likewise, a modem or audio interface connected to the same measured strip becomes part of the total. Make a quick sketch or list of what is connected if the layout is not obvious.
For a laptop, decide whether you want to measure the streaming workload or the combined workload and battery charging. If you are assessing the stream rather than charging energy, begin with the battery fully charged. Otherwise, charging may add demand during part of the session and make the reading less representative of the steady streaming load.
Start OBS and wait for steady state
Power on the PC and open OBS as you normally would. Start the YouTube stream, bring up the intended scene or content, and allow the computer and stream to reach their ordinary operating condition. Do not begin a short measurement the instant you press the power button or start broadcasting: startup activity can create transient demand that is not representative of the settled workload.
Microsoft’s measurement guidance recommends taking readings at steady state because electrical components can use energy differently during startup. In practical terms, wait until the usual applications are open, the stream is running, and any initial loading or buffering activity has passed. There is no universal waiting interval that suits every PC; use the point at which your particular setup has stopped changing materially.
Keep the stream running in its normal mode while you measure. If your channel uses a continuous playlist, use the playlist or loop you would ordinarily broadcast rather than a blank scene. If OBS has a preview that you normally leave active, leave it active; if you normally disable it, measure with it disabled. Record the choice, because it can affect the workload.
For repeatability, avoid changing scenes, launching other software or downloading updates during the measurement unless those activities are part of the routine you are trying to capture. If the actual channel routinely runs a demanding game or several browser sources, include those instead of simplifying the scene just to obtain a lower number. Your aim is a representative reading, not a best-case demonstration.
If the channel is based on a recurring media loop, settings and playlist behaviour are part of that normal run. The practical details in configuring an OBS media playlist to restart can help you reproduce the same playback pattern on another measurement day.
Record watts and accumulated kWh
Watts describe power at a moment: a display showing watts tells you the meter’s present estimate of the connected load. The number can move as scenes change, sources render, the PC shifts between tasks or the stream’s content becomes more or less demanding. A single glance is therefore a snapshot, not a summary of the whole broadcast.
Accumulated kWh describe energy over time. If your meter has an energy counter, note its starting value after the setup is steady and its ending value after the chosen measurement period. Subtract the starting value from the ending value to find the energy registered over that interval. If the counter starts from zero, record that fact and the elapsed time. Always report the duration alongside the kWh reading, since energy depends on both power and time.
When comparing sessions, use the same type of observation each time. You could record watts at regular points during the interval, or use a meter’s average feature if it provides one. If you only record one watt value, describe it as a reading taken at a particular moment rather than an average. Do not present an instantaneous value as though it represented an entire overnight stream.
For an electricity-cost estimate, multiply the measured kWh by the rate that applies to your electricity bill. The result estimates the cost of the equipment connected to the meter for that interval, using the rate you supplied. It is not a universal cost for streaming, and it may not include fixed charges or other billing details. Check your current bill for the rate and how your provider applies it.
A simple record might read: “PC only; OBS stream active; measured from 21:00 to 22:00; accumulated meter energy at start and finish; watts observed during the session; game off; preview on.” The times here are an example of a record format, not a recommended minimum duration or a claim about typical consumption.
State the workload and measurement duration
A reading becomes useful when another person, or you next month, can tell what was running. Record the OBS encoder, output resolution and frame rate, the scene and its active sources, and whether a game or other demanding programme was running. Also note whether the OBS preview was active and whether the meter included only the PC or additional devices.
These details matter because OBS’s CPU requirements vary with the encoder, resolution, frame rate and scene complexity. OBS also uses GPU resources to render and composite scenes, while a demanding game can occupy resources that OBS would otherwise use. The OBS system requirements guidance and encoding performance troubleshooting notes explain why apparently similar broadcasts may place different demands on a PC.
Write down the measurement duration and the method used to choose it. A short interval may capture a brief scene or startup variation; a longer interval may include more of the routine, but it can also include unrelated changes if you leave other tasks running. Choose an interval long enough to reflect the session you care about, then use the same interval when comparing settings or days. Do not imply that any one duration is correct for every workload.
For a fair comparison between two OBS configurations, change one relevant variable at a time where practical. Keep the content, measurement duration and connected equipment the same, and record what changed, such as encoder or frame rate. If you change the scene, game, preview setting and encoder together, the reading cannot show which difference mattered.
This record is particularly helpful if you are comparing a local PC with a cloud-based way of keeping a channel live. The options for always-on YouTube streaming that accept UPI in India address a different operating arrangement; compare scope and recurring costs from current provider information rather than treating a PC measurement as a direct comparison of every cost.
Understand what the meter includes
A wall meter measures the electrical input to everything connected through it. For a PC-only setup, that includes the PC as a complete appliance at the mains: its internal components and the power supply’s conversion losses are part of the wall-side result. It is not a direct report of internal DC power delivered to the CPU or graphics card, and it cannot separate their individual consumption.
This is why outlet measurement and software telemetry answer different questions. CPU or GPU monitoring can help explain what a component is doing, but it does not replace a meter reading for total system input. A wall-side reading is appropriate when the question is how much electricity the connected PC takes from the outlet during the measured period; it is not a component-level measurement.
The meter also cannot distinguish which programme caused a change. If a reading rises when OBS is open, that does not establish that all of the increase came from OBS. The operating system, other applications, the stream content, background work and changes in component activity may all contribute. A measured difference between two carefully controlled sessions is still a difference between two whole-system conditions, not an isolated OBS total.
A clear label prevents a misleading result. Say “PC-only wall-side energy during this OBS workload” if only the PC was connected, or “PC and monitor combined” if both were measured. Avoid calling either result “OBS power” or “encoder power”. Microsoft’s explanation of measuring device power at the wall supports this whole-device framing and the steady-state approach.
Avoid attributing all PC power to OBS
The PC would use some electricity even if OBS were closed. A stream-specific question may tempt you to subtract an idle reading from a streaming reading and call the difference OBS’s electricity use. That subtraction can be a useful comparison of two measured states, but it still does not isolate OBS: the system may have changed its component activity, background tasks, network activity or scene workload between states.
If you want to understand the effect of a particular setup change, define the comparison narrowly. For example, measure the same scene and content with one encoder setting, then repeat with another, keeping the rest of the conditions as close as possible. The result describes the observed difference between those configurations on that PC. It does not prove that the encoder alone caused the difference or predict what another computer will draw.
Do not generalise a result from a devotional video loop to a game stream, or from one PC to a different processor, graphics card or power supply. Even within one channel, a static image and a complex animated scene can lead to different workloads. The same settings may also behave differently when another application is active. There is no single wattage that represents every YouTube stream made with OBS.
For an always-on channel, this distinction can inform an operational decision without turning the reading into a promise. If keeping a particular PC powered overnight is the pain you are trying to remove, StreamNeo can take an uploaded video and run it as a YouTube live stream without your computer staying on. It does not change what a wall meter measures, and it is relevant only if an uploaded-file broadcast fits your channel’s needs; an interactive or changing live production still needs the equipment and workflow that produce it.
Keep the measurement notes with your channel setup notes. If you later change the playlist, scene, audio chain or output settings, repeat the measurement under the new conditions rather than carrying forward the old number. The guide to scheduling a short playlist between longer live videos may help clarify what playback behaviour your measurement should include.
Make the result useful for a decision
A good measurement note should let you answer three questions: what equipment was on the meter, what was the stream doing, and for how long did you measure it? Include the meter’s watt reading method, the accumulated kWh if available, and whether the value is a snapshot or an interval total. If you repeat the test, preserve the same scope and settings so the readings can be compared meaningfully.
You can use the result to estimate the electricity associated with keeping that setup running for a similar interval, provided the workload stays similar. An overnight session with a static loop may not match a daytime session with scene changes or a game. Treat any projection as a scenario based on your own recorded use, not as a benchmark for other streamers.
If the number surprises you, first check what was connected to the meter and whether the setup had reached steady state. Then review the workload notes: preview, game, browser sources and output settings are all useful clues. A surprising reading is a reason to verify the method and repeat it, not evidence by itself that one application or component is responsible.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
Can I measure only OBS with a plug-in meter?
No. A meter at the wall measures the input of the equipment connected through it, not the electricity attributable to one application. It can measure the PC while OBS is running, but it cannot isolate OBS or the encoder from the rest of the system.
Should I record watts or kWh?
Record watts if you want a snapshot of power at a particular moment, and record accumulated kWh over a stated interval if you want the energy used during that period. If your meter offers both, keeping both readings and the duration makes the result easier to interpret. Do not treat one instantaneous watt value as the energy for a full stream.
Does my reading apply to another PC or stream?
Not necessarily. Encoder, resolution, frame rate, scene complexity, content, other active programmes and connected equipment can all differ. Use the reading as evidence about your own setup under the documented conditions, and measure again when those conditions change.
Should the monitor be included?
Include it only if the question is about the whole desk setup. For a PC-only result, connect just the computer’s power supply to the meter and leave the monitor and other equipment outside the measured connection. Label the scope so nobody mistakes a combined reading for PC-only use.