Our Services

Protection and Control Solutions for Energy Networks

TES Limited delivers a comprehensive suite of specialised engineering and management services designed to support the UK’s critical energy infrastructure. We partner with Transmission and Distribution network operators, utility providers, and private enterprises to ensure the safety, reliability, and efficiency of your high-voltage assets.

WHAT WE DO

Check All Our Services

From initial design and project management to Factory Acceptance Testing and documentation, our expert team provides integrated solutions that meet the complex demands of today’s power systems

Detailed Protection & Control Design

We translate high-level concepts into precise, actionable engineering designs. Our team specialises in creating detailed solutions that integrate seamlessly with your new or existing systems, prioritising minimal disruption and outage time during implementation. We meticulously plan for staged work and operational constraints, ensuring a smooth transition from design to reality.

Key design outputs include:

Single Line & Key Line Diagrams
Schematic & Logic Diagrams
Interface Diagrams
Cable Block Diagrams & Schedules
Fibre Optic Cable Diagrams

Protection & Control Cubicle Design

Your systems require robust and compliant housing. We design bespoke protection and control cubicles tailored to your exact specifications and site requirements. Our focus is on creating enclosures that ensure optimal performance, safety, and ease of maintenance for the crucial equipment they protect.

Key design outputs include:

General Arrangement Drawings
Detailed Wiring Diagrams

Contractor Design Approval Engineer (CDAE) Services

Navigating regulatory requirements is critical for project success. Our qualified Contractor Design Approval Engineers (CDAE) provide rigorous oversight to ensure all protection and control designs comply strictly with National Grid (NG) specifications and standards like SR188. This service guarantees technical integrity and streamlines the approval process, preventing costly delays.

Comprehensive Project Management

Successful project delivery requires leadership, foresight, and meticulous control. TES offers end-to-end project management for a wide range of greenfield and brownfield transmission projects. Acting as an extension of your team or as the Principal Contractor’s representative, we manage Health & Safety, Environment & Quality (HSE&Q), budget, and scheduling from inception through to final handover.

Site Investigations

Thorough testing guarantees operational readiness. With extensive operational experience, our team prepares structured and detailed test documentation for any protection and control scenario. We develop comprehensive test sequences, procedures, and configuration paperwork to ensure your systems are fully functional, compliant, and ready for energisation.

Accurate drawings are the blueprint for project execution and long-term asset management. Our CAD engineering service manages your design drawings, scanning, as-built records, and Operation & Maintenance (O&M) manuals. By entrusting us with your CAD workload, including urgent requests, your engineering teams can focus on core design activities. We ensure all information is managed securely and in line with standards such as SR135.

Relay Settings and Calculations

Our dedicated protection settings engineers can analyse system parameters and provide detailed setting reports and voltage drop calculations. Our TES Engineers are SR107 authorised and can provide 1st and 2nd check as well as livelink flows as per your needs.

System Test Documentation & Procedures

Thorough testing guarantees operational readiness. With extensive field experience, our team prepares structured and detailed test documentation for any protection and control scenario. We develop comprehensive test sequences, procedures, and configuration paperwork to ensure your systems are fully functional, compliant, and ready for energisation.

Principal Designer Role (CDM)

Safety is the foundation of every successful construction project. Our qualified Principal Designers ensure your project is planned and managed in full accordance with Construction Design Management (CDM) Regulations 2015. We take a proactive role in design risk management, simplifying health and safety compliance throughout the pre-construction phase and beyond.

CAD Engineering & Drawing Management

Accurate drawings are the blueprint for project execution and long-term asset management. Our CAD engineering service manages your design drawings, as-built records, and Operation & Maintenance (O&M) manuals. By entrusting us with your CAD workload, including urgent requests, your engineering teams can focus on core design activities. We ensure all information is managed securely and in line with standards such as TP135.

Detailed Protection & Control Design

Transform concepts into precise designs with minimal disruption