Location: Swindon, Wilts
Client: SWGT
Services: ICP design, procurement, construction, EPC/ BOP works for BESS units

Who is our client?

Still Waters Green Technology (SWGT) is a UK leading developer and asset manager of utility scale energy storage and flexibility technology aiming to support the UK’s energy transition to net zero. The project is financed by Santander UK.

How did Green Frog Connect help?

DNO design submission for the 33kv contestable design works. (IDNO adopted)
33kv construction of 400m grid cable route, from SSEN substation to customers point of supply substation.
Construction of SSEN and customers substation compounds.
DNO protection and control panels and battery charger systems.
Earthing soil resistivity, design, and earthing installation.
Customers 33kv 6 panel switchboard, protection panels, site earthing.
Installation of over 50 BESS containers.
Design, civil construction, BESS installation, electrical integration and all BOP for the EPC works on site.
On-going 24/7 O&M services for the Mannington site. Including SAP coverage.

Major Design Considerations of the Scheme

The overall scheme was purchased from Swindon Borough Council and the project developed by Public Power Solutions and SWGT.

Technically challenging on site due to the close proximity of 132kv SSEN overhead lines, this was overcome by our on site team in conjunction with advice from Green Frog SHEQ team.

Extremely narrow access to the development site. Green Frog Connect was appointed as ICP/EPC for all works on site.

Green Frog Connect in the UK BESS market

Green Frog Connect are currently involved in large a number of BESS projects, with a total capacity in excess of 1GW across the UK. Of these projects over 400mw are now connected to the grid and operational.
Green Frog Connect are a Lloyds Accredited ICP with capabilities to design, and construct grid connections up to 132kv across all DNO areas in the UK.
We have in-house expertise in the design of BESS projects including electrical integration and civil works full design.
Our construction teams have now experience with the installation of most BESS systems, including, but not limited to Tesla, BYD, GE, ABB, Sungrow, Envision, Canadian Solar to name a few. Our involvement in this market reinforces our commitment to the Low Carbon future of the UK energy infrastructure.

The post Mannington Depot BESS – 33kv ICP and EPC works appeared first on Green Frog Connect.

Location: Aylesbury, Bucks
Client: METKA EGN
Services: ICP design, procurement, construction, EPC/ BOP works for solar

Who is our client?

Metlen (formerly Metka) are a global manufacturer and contractor of solar energy and energy storage projects, providing reliable solutions across the project development spectrum. The Whirlbush solar project is one of a number of projects Green Frog Connect have delivered for this client.

How did Green Frog Connect help?

DNO design submission for the 132kv contestable design works.
132kv construction of 1.5km grid cable route, from UKPN Ilmer GSP substation to customers point of supply substation.
Construction of UKPN and customers substation compounds.
DNO protection and control panels and battery charger systems.
Earthing soil resistivity, design, and earthing installation.
Site earthing.
Design, civil construction, electrical integration and all BOP for the EPC works on site.

Major Design Considerations of the Scheme

The overall scheme was constructed, completed and handed over within the timescales of our contract programme, this despite several delays to the project, not within our control.
Green Frog Connect was appointed as ICP for all works on site.
The solar site construction improvement works, provided five improved grassland fields for sheep grazing as well as additionally providing improved habitats for great crested newts, hare, toads, hedgehog and improved grassland for ground nesting birds.

Green Frog Connect in the UK solar market

Green Frog Connect are currently involved in large a number of solar projects, with a total capacity constructed to date in excess of 1.2GW across the UK, most of these sites are now connected to the grid and operational.

Green Frog Connect are a Lloyds Accredited ICP with capabilities to design, and construct grid connections up to 132kv across all
DNO areas in the UK.

We have in-house expertise in the design of high voltage projects including protection systems, earthing, power studies and civil works full design.
Our construction teams have extensive experience in the construction of large grid scale infrastructure projects. Our involvement in this market reinforces our commitment to the Low Carbon future of the UK energy infrastructure.

The post Whirlbush Solar – 132kv ICP and BoP works appeared first on Green Frog Connect.

Location: Dormington, Herefordshire.
Client: Conrad Energy
Services: ICP design, procurement, civil works, HV work, customers transformer and commissioning

Who is our client?

Conrad Energy is the UK’s largest flexible power producer with over 800MW of generation across 60 plants, providing solutions to support the UK’s energy transition to net zero.

How did Green Frog Connect help?

DNO design submission for the 66kv contestable design works.
66kv construction of LILO 400m grid cable route, from NGED substation and 66kv terminal tower to customers point of supply substation.
Construction of NGED and customers substation compounds.
Construction of 66kv NGED open terminal substation/ structures.
DNO protection and control panels and battery charger systems.
Earthing soil resistivity, design, and earthing installation.
Customers 66/33kv 41mva power transformer, NER, earthing transformer and protection panel.
33kv 1250A 25ka 4 panel customers switchboard, with DC battery chargers, aux substation transformer, GRP housing and steel support structure, G99 protection scheme.

Major Design Considerations of the Scheme

The overall design of the scheme shaped by community and local council engagement will create a significant biodiversity net gain with 40 hectares of native grassland created to allow the local flora and fauna to thrive.

The post Larport Solar – 66kv ICP works appeared first on Green Frog Connect.

Location: UK wide
Client: AMP Clean Energy
Services: ICP, Engineering, Procurement and Construction services

Project details

The purpose of the project was to help support the growth of renewables by providing energy on-demand when the wind doesn’t blow and the sun doesn’t shine. This helps to balance the electricity grid ensuring that enough power is generated whilst supporting the transition to a low carbon economy. Green Frog Connect were appointed to act as the ICP for grid connections and as EPC for the construction of the six gas peaking power plants as part of AMP Clean Energy’s Urban Reserve project.

We faced a challenge in that all of the sites were located on brownfield industrial estates. Using our expertise we saved space and ensured that all sites were built to the highest safety standard whilst accommodating multiple activities. The first project began in late 2020 with each following mobilisation taking place on a weekly basis. The first site became fully energised in March 2021.

All six sites were up and running simultaneously and throughout the project Green Frog Connect demonstrated the depth and flexibility of our construction teams to ensure that AMP Clean Energy was confident in our delivery promises.

Our initial appointment was to undertake the contestable design and place orders for long lead time equipment. The client’s gas engines and HV switch room had already been ordered which helped to reduce construction activities to 20 weeks per project. We had full responsibility for the contestable works, site civil construction, the electrical balance of plant installation and co-ordination of the full site commissioning through to client handover.

Green Frog Connect managed to maintain momentum across the project and ensured all sites were connected on time and within the budget set by the client. We worked closely with the client’s Original Equipment Manufacturer (OEM), co-ordinating all activity with the Distribution Network Operator to ensure that the client’s route to market was achieved at the earliest opportunity.

The post Urban Reserve Phase 3 Projects appeared first on Green Frog Connect.

In order to connect the site to the electricity grid, Green Frog Connect is installing a new 33kV cable from the north end of Halewick Lane to the electricity substation in East Worthing.

The cable route and proposed dates for the works to take place are shown on the map (below). These are subject to change, so please check back here regularly for the latest information.

Please click for a larger view:

Green Frog Connect will be working on this project with contractors from Taylor Plant.

Please contact us on 01934 411233 or email enquiries@greenfrogconnect.co.uk if you have any questions about the works. You can also speak to our personnel on site.

If you have any questions for West Sussex County Council about the Halewick Lane battery storage project, please email wastes.servicescontracts@westsussex.gov.uk

The post Halewick Lane appeared first on Green Frog Connect.

Location: Leicestershire
Project value: £350k
Services: Construction services, design

Our innovative technical solutions resulted in a vastly reduced project lead time and subsequently significant cost savings for the client.

Project details

Demonstrating the company’s commitment to implement more resource-efficient methods in its manufacturing process, the ‘hard-wired’ solar development will provide 30% of the site’s annual electricity demand, enabling the facility to reduce its carbon footprint and reliance on the national grid.

Green Frog Connect were responsible for the turnkey design and installation of the 11kV cable that connects the solar park to the factory, as well as an extension of the existing 11kV switchboard which allowed the solar park to be integrated into the factory’s existing network.

The project, which in part aimed to address the company’s sustainability concerns, was made technically challenging as the solar farm is located some distance from the factory itself. The existing Distribution Network Operator (DNO) metering substation supplying the factory required a generator constraint panel for the solar farm which was located two kilometres away.

In partnership with the rest of the project team, our challenge was to find a reliable solution to transfer the constraint signals to the solar park. With tight client deadlines and restrictive manufacturer availability, we designed and built our innovative technical solution in-house.

Using a fibre cable, complete with programmable converters, we were able to transform the hardwired volt free contacts via the ethernet. Our technical specialists designed and personally built the required panels mirroring each other at the remote ends. Each panel is built with an integrated supply unit with battery support should external supplies fail. We addressed any potential failure in communication by building in a watchdog for continuous monitoring to curtail generation if required to avoid tripping of any existing factory supplies.

The post Private wire solar installation appeared first on Green Frog Connect.

Location: Preston, Lancashire
Capacity: 90MW
Services: ICP, Principal Contractor, EPC, design, civil works, traffic management

Project details

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.

The post Red Scar Business Park appeared first on Green Frog Connect.

Location: Gateshead
Project length: Three months
Client: M. H. Southern & Company
Services: Independent Connection Provider (ICP)

As an Independent Connection Provider (ICP) we were able to go out to market to negotiate a significant cost saving from the client’s incumbent Distribution Network Operator (DNO) enabling a 25% reduction in grid connection costs.

Project details

Redeveloping and enlarging an existing site provided an opportunity for M. H. Southern to merge their production sites into one facility in Gateshead. With the full project taking less than a year, the move was completed by December 2019, including the relocation of over 4,000m3 of stock. We became involved in the project in June 2019, and finished on site in September 2019, following the installation of an 11kV, 500KVA, substation with a single point, low voltage, 800 amp supply to the sawmill. We collaborated with the client to understand the historical energy usage and proposed an INDO adopted solution, significantly reducing their connection costs., as well as cutting the project timescale from 7 to 3 months.

The site was operational during the build of a new production facility and sawmill, creation of fully covered storage space and the installation of new preservative treatment tanks. We enabled this to happen through the provision of an alternative feed throughout the works.

We’re proud to have contributed to the smooth running of the business throughout the project. Delivering a connection on time and on budget was crucial to the client’s requirements to ensure they could meet customer orders, and we’re pleased to have supported another UK business in achieving their goals.

The post ICP works for Green Lane Sawmills appeared first on Green Frog Connect.

Since 2004, Air Liquide has provided bulk gases to the manufacturing, pharmaceutical, food and beverage industries. They recently moved their UK production plant to the Midlands, so their existing manufacturing facility required an increased power supply. Green Frog Connect successfully installed a new 20MW 132kV connection, enabling the business-critical factory upgrade to go ahead.

Location: Birmingham
Client: Air Liquide
Services: ICP, Engineering, Procurement, and Construction services, Customer balance of plant construction and commissioning.

Project details

Bounded tightly by a railway line, existing on-site industrial operations and a working car park, the site for our latest HV installation presented our project team with some interesting challenges. From contract award successful energisation was achieved within the targeted twelve months program.

Once work began on site, several unexpected and unmarked and significant Victorian culverts were discovered running beneath the planned cable route and throughout the client’s site which created additional design challenges. Local network fault levels also presented the opportunity for an innovative earth design solution to mitigate against any resultant imported Hot Zone contours across the adjacent Network Rail track. Our technological approach prevented what would otherwise traditionally have required a disruptive redesign of the client’s site and a significant impact on the overall project delivery.

Throughout the project it was vital that existing production services were able to continue as normal. Our team led the complex logistics required to ensure our client experienced no operational impact from our works. We liaised with all other parties working across the clients site build to ensure all works dovetailed seamlessly with each other to ensure completion ahead of the client’s scheduled on-site plant commissioning.

We’re delighted to have played a central part in delivering this 132kV connection which enabled the upgrade of their manufacturing facility.

Click here to watch the site develop on Youtube.

The post 132kV connection for Air Liquide appeared first on Green Frog Connect.

Location: Swansea West
Capacity: 40MW
Project length: Seven months
Client: Green Frog Power

Key client benefits

• We designed and negotiated a simplified connection arrangement which saved the client in excess of £500k compared to their original arrangement.
• We diverted a private overhead line that was originally routed through the site and managed all outages to ensure that the businesses being fed did not lose supply.
• A shared electricity and gas trench for the off-site connections was coordinated to minimise costs and reduce the amount of disruption to the local community.

Time-lapse of site build

Click here to watch the site develop on Youtube.

The post Swansea West gas-fired power generation appeared first on Green Frog Connect.