Two crews (West Ashland, Aylesbury) attended.
Firefighters were called to an electric substation measuring approx four meters by four meters involved in fire.
National Grid were also in attendance to isolate the power supply.
Firefighters used:
- One breathing apparatus set
- One hose reel jet
- One thermal imaging camera
One crew remained on scene for some time to monitor temperatures.
The incident was then handed over to National Grid and Thames Valley Police.