It is understood a vehicle has damaged equipment within the area.
The plant returned to operational capacity to boost available power
After sitting stagnant, the station was re-ignited last year
Its recommissioning reinstated 16 jobs.
It has been in cold storage since 2014, with gas entitlements sold.
Swanbank E Power Station will return to full capacity on Thursday.
Mothballed station will start supplying power again on January 1
"It is likely advertisements will be released in the coming months."
Coal big industry for city
Letters to the Editor
Great to share memories of days gone by
Former workers invited to share their memories
Avid collector sees the beauty in simple objects
Workers' hard yakka brightened our days
Government accused of station sell-off 'games'
Power station to stay in operation for two more months
District rowing secures future
Special landmark picked for powerful performance
Croftby residents hit the road to protest coal seam gas dangers