Green Frog Connect carried out an essential 2km 33kV high voltage cable infrastructure installation at this site just off junction 31A of the M6 to connect a 40MW embedded gas peaking power plant to an existing 33kV electricity substation.
Location: Preston, Lancashire
Services: ICP, Principal Contractor, EPC, design, civil works, traffic management
With the cable route from outside the business park to the substation at over 1km long, and being the main feeder to the M6, the local highways team deemed this a highly traffic sensitive network and a critical emergency route in the event of any motorway congestion. Detailed discussions with local highways and businesses were required to ensure that traffic flow was maintained with any potential disruption minimised.
At the same time, and adjacent to the Gas Plant being constructed by Green Frog Connect, a 50MW Battery Energy Storage Plant was in development. In collaboration with this site, Green Frog Connect extended their contract to facilitate the off-site cable route for both developments which subsequently consisted of 4No 33kV circuits and corresponding pilot circuits. Working to extremely challenging timescales, an intricate program and complex traffic management plan was devised and agreed with all stakeholders. By operating continuous shift patterns, a 30% program improvement was achieved, enabling the successful energisation of the BESS site ahead of the Winter Triad trading period and ensuring essential balancing services to the National Grid during high usage periods, mitigating potential power outages.
On site as the Principal Contractor, Green Frog Connect provided full turnkey services for this gas project. Our scope of work included the design and construction of the balance of plant, including switchgear, transformers, power and control cabling for the client’s SCADA
system, security control systems and auxiliary power supplies, along with the design and construction of the civil works including ground works, reinforced concrete structures, fencing and access roads.
Following the successful sign off of the revised G99 commissioning procedure for the site’s 27 GE Jenbacher gas engines, the site was available for the client to trade and meet its Capacity Market obligations.
Our project management resulted in a 30% program improvement for the off-site grid connection cable works ensuring supplies were available ahead of the Winter Triad trading period.