Over 3,000 former workers at Aberthaw Power Station gathered at the Station to say goodbye on Friday 6th February following the final closure at the end of January.
The station will now go into de-commissioning which is expected to be completed by the end of March.
The station is Wales' last coal-fired power station, with it closures leading to the loss of around 170 jobs on the site.
The plant originally opened in 1971 at a cost of more than £50m and was due to remain in operation until 2021.
Vale AM Jane Hutt joined the gathering to thank the workforce for their skills and steadfast commitment over decades of power generation including the support staff and managers.
She said, “I have been coming to Aberthaw Power Station regularly over the past 21 years more recently meeting with union and management to ensure that everything was being done to support the current workforce with retraining, job search and support.
I was pleased to thank canteen staff Mrs Pritchard and her daughter Julie alongside Theo Stenstrom who was Union convenor and worked at Aberthaw from 1965 to 2000.
I wish them all well.”