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Pembroke Power Station


Pembroke power station

This £1 billion state-of-the-art power station is one of Europe’s largest and most efficient combined cycle gas turbine (CGGT) plants. At 2000MW, it plays an important role in the UK’s energy supply, able to respond quickly to the market to provide a highly flexible and reliable source of energy to over 3.5 million households.

It was officially opened by a group of officials and industry leaders on 19 September 2012, marking the end of over three years of construction, in which 10,000 contractors worked 7.4 million man hours to complete the state-of-the-art facility.

Over 300 Interserve operatives delivered £20m worth of scaffolding and pipework and vessel insulation services during the construction phase, managed by a regional operations team based in Swansea.

Interserve worked directly for ZRE, the mechanical contractor commissioned to build the turbine halls, but were also approved by the main EPC contractor, Alstom Power Ltd.

For scaffolding, Alstom stipulated two on-site scaffolding contractors: one for Power Island and one for the turbine halls, the latter being secured by Interserve. A unique requirement was that each contractor had to paint the entire length of their scaffold tube in one of two colours to ensure safety, visibility and identity.

As one of the two nominated scaffolding suppliers, Interserve also operated on a schedule of rates basis for a number of other subcontractors on site and delivered a fully integrated design service using our in-house design capability.

Combining the scaffolding and insulation services enabled a more efficient interface for our client, delivering value for money through shared management and transport costs. With an even broader service portfolio, our profile with Alstom also enabled Interserve to prequalify for the term maintenance works with RWE npower, the owners of the post commissioned plant. Our strengths came from our in depth knowledge of the plant, our experience of access and insulation and our ability to provide local labour to suit some very demanding programme out turns. A £5m, three-year term maintenance contract for industrial and commercial cleaning, painting and minor civils was awarded in May 2012, demonstrating Interserve’s lifecycle approach to constructing and maintaining facilities.

  • 300 strong, directly employed, local team
  • One of the two nominated scaffolding suppliers
  • Pipework and vessel insulation services
  • Delivering value through shared management costs
  • Five stars in British Safety Council Audit
  • Three-year term maintenance contract.

Project vitals








2009 to September 2012

Oil & Gas

Interserve works in close collaboration with clients, stakeholders and communities to find innovative solutions to meet future requirements.

Regulated Industries

Interserve has been partnering regulated industries for over 65 years ensuring compliance to meet safety and quality standards.


Flexible combination of manpower and equipment to support UK’s manufacturing industry.

Scaffolding, insulation and term maintenance services at one of Europe’s largest CCGT plants.