A power plant being built in England for German giant RWE npower is under protest by workers at the site, who are calling for jobs to be given to British workers.
The 2,000MW Pembroke power plant with five units is valued at £800m (US$1.2bn) and is being built by Alstom under a contract with RWE.
Construction work on the power station began in May last year. It is due to last three-and-a-half years and generate around 2,000 jobs in total, writes the BBC.
The rally was organised by an online Facebook group called Give the British Jobs First at Pembroke Power Station.