Why are my steam turbines idle?

[Toaster]

https://steamcommunity.com/sharedfiles/filedetails/?id=1898245886

[Monoxide]

https://oxygennotincluded.gamepedia.com/Steam_Turbine

"The steam below the generator must be at least 125 °C. If the steam below the generator becomes less than 125 °C the Steam Turbine will cease to produce any power."

[Hedning]

You can't have the turbine in the same room as the steam. The turbine needs to be in a room that's <100°C and the steam needs to be >125°C. Like so: https://i.imgur.com/E9f8AXC.png

[ewpayne]

https://steamcommunity.com/sharedfiles/filedetails/?id=1899176625

https://steamcommunity.com/sharedfiles/filedetails/?id=1899177017

I'm using a room with aquatuners just like i saw in a video but alas, it is also inactive.

[ImbaJugga]

Its like Hedning explained. Steamturbine must be in a cool room, under the turbine must be the hot steam. I'm recommend to you, that you don't use a steamturbine for steam temperature below 200 degrees, because they will lose a lot of his power. Other problem will be, that the turbine goes to fast idle, because they take the most heat. I used 4 turbines for 750 degrees hot steam. Each produce 350.000 TDU/s heat. It's more difficult to use this powerplant as you think. Next problem , they cool down the steam to fast. 300kg/field 750 degrees steam losing his complete heat in 20 days ?! balance between steam temperature (ca. 250 degrees would be perfect), genering new heat, sheap cooling turbines and a lot more that needed.

[Hedning]

Originally posted by ImbaJugga:

It's more difficult to use this powerplant as you think. Next problem , they cool down the steam to fast. 300kg/field 750 degrees steam losing his complete heat in 20 days ?!

That's because you are wasting most of that power. Steam turbines max out at 200°C with full flow. The rest is just generating heat without generating power. If you have 750°C steam you should close it off and use it to heat a secondary steam chamber which you keep cooler.