Fire crews from acros Shropshire were called to the power station, on Buildwas Road, just after 9pm yesterday.
Around 10 square metres of biomass, organic matter used to create electricity, were smouldering when the fire service arrived at the scene.
Crews from Tweedale and Much Wenlock attended, along with an aerial ladder platform from Shrewsbury, a water carrier from Bridgnorth and a high volume pump from Prees.
It is believed the fire did not start in the main building of the power station.
Alison Stant, a spokeswoman for Shropshire Fire and Rescue Service, said: "It was quite a small fire and the crews on scene made good progress in making the area safe.
"There was no risk of any danger to the public and appliances started to make their way back to their stations at around 11pm."
Scott Somerville, press manager for power station operator Eon, said: "We can confirm the fire brigade attended the power station just after 9pm last night and quickly doused a small, smouldering dust build-up at our fuel store. No damage occurred. All safety procedures were quickly and correctly carried-out and we expect operations on-site to continue as planned."