Our Impact
Making a Difference
At GreenEngineering, we've helped reduce global carbon emissions by over 50 million tons through our innovative sustainable solutions.
Learn about our impactAt GreenEngineering, we've helped reduce global carbon emissions by over 50 million tons through our innovative sustainable solutions.
Learn about our impactGreen Engineering Ltd was appointed as principal consultant for the design and delivery of a 132kV SF₆-free GIS (Gas Insulated Switchgear)
Green Engineering Ltd was appointed as principal consultant for the design and delivery of a 132kV SF₆-free GIS (Gas Insulated Switchgear) substation to support a major 300MW data centre campus. This forward-thinking project prioritised both environmental performance and engineering excellence, integrating advanced electrical infrastructure with building services, architectural design, and full regulatory compliance.
Our multidisciplinary team led the technical design and project coordination for this flagship installation—managing the interface between power system engineering, building design, and client-side programme objectives across a complex four-storey substation facility.
Confidential Global Data Centre Operator
Principal consultancy for full substation package
Primary electrical engineering (132kV level)
Design of SF₆-free GIS switchgear systems
Building services and mechanical-electrical (M&E) integration
Architectural coordination and space planning
Cable sizing and route engineering
Planning support and submission assistance
Compliance with UKPN Engineering Design Standards (EDS)
Building Regulations alignment and design compliance assurance
Engineering management and design team leadership
The project marked a significant milestone in sustainable substation design, incorporating next-generation SF₆-free GIS equipment to eliminate the use of sulfur hexafluoride—a potent greenhouse gas traditionally used in high-voltage switchgear.
We led the engineering selection, system layout, and compliance strategy for this switchgear technology, ensuring it aligned with both UKPN connection standards and the data centre’s operational requirements. Our work supported the client’s broader net-zero and ESG goals while preparing the infrastructure for future-proof scalability.
The Olympus project required the integration of complex electrical and architectural elements within a four-floor substation structure located on a high-security data centre campus.
Green Engineering Ltd coordinated the complete design of this facility, including:
Electrical room and switchgear layouts
Fire strategy and ventilation systems
Cable routing and sizing across vertical risers
Coordination with structural engineers and architects
Planning of internal access, maintenance zones, and equipment clearances
Our ability to bridge the gap between power system engineering and building design was central to delivering a substation that met technical, regulatory, and operational expectations.
As the site was connected at 132kV via UK Power Networks (UKPN), our team ensured the entire substation and interface met the UKPN Engineering Design Standards (EDS), including:
Protection and control schemes
Cable termination and sealing end layouts
Earthing and bonding design
Technical documentation and single line diagram (SLD) production
Submission and negotiation support with UKPN planners and engineers
We acted as the client's interface throughout the compliance process, simplifying communication with the DNO and ensuring the project could proceed through UKPN’s design and acceptance stages without delay.
In addition to engineering services, we provided technical input to support the project’s planning application—including site layout coordination, building services strategy, and environmental considerations.
We also ensured that the full substation design aligned with Building Regulations, including thermal performance, fire safety, access, and mechanical services integration—providing a seamless pathway from technical design to construction and building control approval.
Green Engineering Ltd successfully delivered a fully coordinated, environmentally conscious substation design that aligned with both the client’s mission-critical reliability requirements and their commitment to carbon reduction.
By embracing SF₆-free GIS technology and managing every element of the substation’s engineering, architecture, and regulatory interface, we enabled the safe, efficient delivery of a power connection capable of supporting 300MW of data centre capacity—without compromise on safety, compliance, or sustainability.
Our leadership in both technical and project management roles ensured the development progressed with clarity, control, and forward-thinking engineering.
Voltage Level: 132kV
Capacity: 300MW
Connection Type: SF₆-Free GIS
Application: Hyperscale Data Centre Campus
Facility Size: Four-storey substation complex
Interface: UKPN (Distribution Network Operator)
Disciplines Covered: Electrical, M&E, Architectural, Planning, Compliance
