CCR Energy has thanked South Wales Fire and Rescue Service for its swift response following a fire breaking out at the former Aberthaw Power Station on Thursday.
In a statement on Friday afternoon, CCR confirmed that the emergency response has now concluded.
A spokesperson said "Crews left the scene around midnight, and a reinspection took place this morning. No signs of heat, smoke or fire were identified in the building."
"We would like to thank South Wales Fire and Rescue Service and all responding agencies for their swift and professional response. We are also grateful to our partners, local residents, stakeholders and the wider community for their patience, understanding and support throughout the incident."
"We continue to work closely with our partners as the site returns to normal operations. Thank you once again for your patience, understanding and support throughout the incident."

Former Holm View Leisure Centre could become education and community hub
ScoutsCymru members represent Wales at Royal Albert Hall Festival of Remembrance
Plans for indoor market at former Barry Wilko move forward
Police given additional powers to deal with anti-social behaviour in Barry
Senedd passes supplementary budget with £60m boost for additional learning needs
Future of planned festive events in question after criminal damage to Barry Town Hall
Consultation to open on plans for 35MW solar farm near Penarth
No Trains through the Vale of Glamorgan this Sunday
Police and Cardiff City launch operation to tackle matchday anti-social behaviour
Free leaf and fallen fruit collections return in the Vale
Barry retains Fairtrade Town status until 2029
£1m improvements planned for Pencoedtre Park as splashpad work set to begin
Plan submitted for new independent school on site of well-known charity farm
Is your hot water bottle safe?
Solicitor sentenced for defrauding Cancer Research UK
Cate is crowned champion!
WATCH: Winner of The Voice UK Cate McHugh duets with Sir Tom Jones
Barry filmmaker takes her documentary to the big screen in New York
Pupils leave their mark on new school at steel signing event
£3m refurbishment plans revealed for Cowbridge Town Hall