The Gammaton project demonstrates our full turnkey capability in action.
Delivering this 132kV connection required navigating complex DNO interfaces and challenging terrain. It’s a prime example of the Sinewave standard where technical excellence meets our commitment to people and planet. We successfully took the project from the first concept through to final energisation.
Gammaton
Our Client
Sonnedix is a global renewable energy producer with a pipeline exceeding 6GW. They develop, own and operate assets for their full lifecycle. That long-term approach aligns perfectly with our values at Sinewave. We engineered this high-voltage connection to ensure decades of reliable performance, directly supporting their mission.
As one of the most established names in the renewables sector, Sonnedix continues to set the benchmark for what responsible and scalable energy looks like. We are proud to work alongside them to help make that future a reality.
Scope of works
Design and Engineering
Development of a fully adoptable and private network design for the 132kV connection
Delivery of required network and compliance studies including G99, fault level, protection coordination, harmonic, voltage fluctuation and voltage unbalance studies
Detailed 132kV and site-wide earthing design and earthing studies
Electrical design submissions and technical engagement with the Distribution Network Operator (DNO)
Procurement and Equipment
Specification and procurement support for long lead high voltage plant and equipment
Coordination of delivery for transformers, circuit breakers, disconnectors, protection panels, cables, sealing ends and auxiliary systems
Factory acceptance testing support for major plant, including the 132kV transformer
Civil Engineering and Construction
Site mobilisation, compound setup and access road construction
Construction of the 132kV substation compounds including earthworks, foundations, plinths and equipment bases
Construction of control room buildings including structural works, internal fit out and services
Installation of drainage, ducting, trenching and cable containment systems
Installation of fencing, lighting columns and maintenance access route
Electrical Installation
Installation of 132kV and 33kV primary plant including transformers, disconnectors, circuit breakers and instrument transformers
Installation of steel support structures and equipment gantries
Installation of HV, MV and LV cabling including power, control, protection and fibre
Jointing and termination of 132kV and 33kV cables including sealing ends and terminations
Installation of protection panels, battery systems, LVAC systems and auxiliary equipment
Control, Protection and SCADA
Installation and configuration of protection systems and relay panels
Installation of SCADA, RTU and communications infrastructure
Integration of control and protection systems with DNO requirements
Installation of interface panels and emergency trip systems
Testing, Commissioning and Energisation
Pre-commissioning checks across all electrical systems
Cold commissioning of private and DNO side equipment
Secondary injection testing and protection validation
High voltage pressure testing and live checks
Coordination of outages and interface with the DNO control room
Final energisation of the 132kV connection and associated systems
Compound overview
We took to the skies to give you a closer look at the project’s layout.
Gammaton supports a 35MW solar power facility near Bideford, Devon, working in coordination with NGED as the Distribution Network Operator.
Built from the ground up
Follow the project through its entirety with our on-site timelapse camera, providing a unique perspective on the action.
Contact Us
Looking to get your next project off the ground?
Contact Team Sinewave today.