Perenco Centrica.


We were asked to design and construct the new engine building and external yard construction on Centrica’s Perenco project at Wytch Farm in Dorset. The site is a COMAH upper tier site and it is the largest onshore oil field in Europe.

The new engine facility allows the by-product of gas to be turned into electricity to power the overall site. A complex civils scope due to the amount of M&E, including two engines weighing 187 tonne each, along with an external Waste Heat Recovery Unit Tower including large silencers.


We engaged with our design engineers and worked closely with the clients M&E designers to produce a design that was bespoke to this complex project. Planning restraints along with the acoustic properties of the building required close co-ordination with our client to produce a compliant design and specification. Other constraints included the location of the existing high pressured gas main and wayleave agreement.

The design produced a 13m high steel frame building which included blockwork, cladding and a stud wall construction. All the exposed steelwork was fire rated and 2 internal cranes were installed. The external yard that was constructed consisted of a concrete slab and foundations to support an external steel frame which housed the large M&E chimneys and silencers. ACS also installed all the secondary steel work including high level walkways.

Other elements of the works included all drainage, ducting and trough installation, road realignment and additional external slabs for the HV/LV Transformer and gas mixing station.


We have an excellent working relationship with Centrica including close communication to ensure budgets are maintained and agreed. We also worked closely with Centrica on the design and programming, where some elements of the building envelope had to be phased to allow access for the 187 tonne engines to be installed.

Project and value