How to suppress energy saving with CLI?

[LigH.de]

Trying to use some PCs I have access to "over night" to benchmark x265 encodings with different CPUs, I found that it usually fails to run encodes in a batch because Windows 7 may enter an energy saving state while x265 is busy.

To avoid manipulating energy saving plans on other PCs, I'd like to execute a CLI tool which will suppress energy saving while the batch is executed, and restores the previous state when the batch is done. Do you know any such tool?

There seems to be a "portable" GUI tool called "Don't Sleep", but I would prefer CLI.

[Dougster]

Windows 7 performs background maintenance functions overnight if the machine is left on. Try disabling WINSat first, it is notorious for shutting down (or slowing down) other processes. By default it runs early every Sunday morning.

[LigH.de]

That's not the real issue. Win7 rather enters energy saving after some "idle" time (without user input), even if CPU utilization exceeds a percentage one would call idle.

Apart from that, disabling a service would be even more manipulation of someone else's PC than changing a power plan...

[Dougster]

The only other option I can think of it to change the power plan to "Performance' which might help. You might want to see
if there is an Anti-Virus program that is performing a scheduled scan overnight.

[LigH.de]

If it is possible to change the power plan to "Performance" when starting a batch, and to reset it to the previous state when finishing a batch, this may work; except someone configured the power plan "Performance" to still enter an energy saving state.

Some media players seem to know how to suppress energy saving while playing. Therefore I hoped it may also be possible to find a CLI tool which can suppress energy saving while executing a batch.

[Dougster]

As far I know there isn't, but I could be wrong on that. I build a lot of machines for gamers and video enthusiast. As a general
rule when I set up the OS I preset the power options for performance (and of course I disable WINSat). The power options
in the control panel are pretty straight forward.

[LigH.de]

But I don't want to change settings on PCs I don't own.