Bespoke GRP & Steel Switchgear Substations and Oil & Gas Metering Housings
Fully Integrated Substation Solutions – Designed Around Your Project
Hill Grwp designs and manufactures fully bespoke switchgear substations and enclosures, combining robust GRP or steel structures with complete electrical and environmental integration.
Each unit is engineered around your exact project requirements, including ventilation, lighting, temperature control, cable management, and access, delivering a coordinated, ready-to-install solution.
Built for utilities, industrial applications, and critical infrastructure, our substations are designed to reduce on-site work, improve consistency, and ensure long-term performance in demanding environments.
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Complete Substation Package
More Than an Enclosure - A Fully Integrated Substation Solution
Our substations are delivered as complete, engineered packages, not just empty housings.
We design and integrate all required systems to suit your equipment and operational requirements, including:
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Ventilation systems (natural or forced)
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Internal lighting and small power
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Temperature control (heaters or air conditioning)
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Cable management and gland arrangements
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Earthing and bonding systems
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Fire-rated or specialist internal requirements (if needed)
This approach ensures every element works together — reducing installation time and eliminating coordination issues on site.
Electrical & Environmental Systems
Engineered Internal Environment for Reliable Operation
Substation performance depends on how well the internal environment is controlled.
We design and integrate all supporting systems to ensure safe and efficient operation:
Ventilation
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High and low level natural ventilation
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Forced ventilation where required
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Weather louvres with mesh protection
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Designed airflow to suit equipment heat loads
Temperature Control
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Panel heaters for anti-condensation
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Air conditioning systems where required
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Thermostatic control and monitoring
Lighting & Power
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Internal LED lighting
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Emergency lighting options
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Maintenance power supplies
Cable Management & Earthing
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Cable trays and routing systems
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Gland plates and entry points
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Integrated earthing and bonding
Everything is considered as part of the overall design, not added later.
Construction, Finishes & Materials
Built to Perform in Harsh Environments
We offer multiple construction options depending on the project requirements:
GRP Enclosures
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Corrosion-resistant and weatherproof
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Lightweight and low maintenance
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Ideal for utilities and exposed environments
Steel Structures
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Heavy-duty and structurally robust
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Suitable for complex or high-load installations
Finishes Available
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Hot-dip galvanised steel
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C5 paint systems for high-corrosion environments
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Powder-coated finishes
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Standard or bespoke RAL colours
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All materials and finishes are selected to match the environment and lifespan requirements of your project.
Base & Structural Options
Complete Units with Integrated Base Systems
We can supply substations with fully designed base solutions, ensuring a complete and coordinated installation.
Options include:
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Fabricated steel bases
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Hot-dip galvanised bases
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C5 painted steel bases
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Coordination with precast concrete foundations
Bases can incorporate:
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Cable entry apertures
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Lifting points
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Fixing details
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Service penetrations
This ensures everything is aligned before the unit arrives on site.
Access Platforms & External Works
Safe, Bespoke Access Solutions
Where required, we design and supply external access systems to suit the substation layout:
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Steel access platforms
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External staircases
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Handrails and guarding
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Maintenance access areas
All access systems are bespoke and designed specifically for your project and site conditions.
From Drawings to Installation
End-to-End Delivery
We support your project through every stage:
Design
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General arrangement drawings
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Equipment coordination
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Ventilation and system design
Manufacture
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Factory build and assembly
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Integrated fit-out
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Quality control and testing
Delivery & Installation
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Transport as complete or sectional units
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Installation support
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Final positioning and handover
This reduces risk, improves quality, and keeps your project moving.
Why Choose Hill Grwp?
Hill Grwp delivers fully bespoke GRP and steel substation solutions designed for modern power infrastructure, utilities, and industrial applications across the UK.
We don’t just manufacture enclosures — we provide fully integrated, ready-to-install substations, engineered around your equipment, your site, and your programme.
What Sets Us Apart
Hill Grwp delivers fully bespoke GRP and steel substation solutions designed for modern power infrastructure, utilities, and industrial applications across the UK.
We don’t just manufacture enclosures — we provide fully integrated, ready-to-install substations, engineered around your equipment, your site, and your programme.
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Complete, Integrated Solutions
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Engineered for Demanding Environments
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Fully Bespoke to Your Project
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End-to-End Delivery
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Built for Compliance and Confidence
Contact us
+44 1792 899177
Frequently Asked Questions (FAQs)
What is included in a Hill Grwp substation?
Each unit can be supplied as a complete package including the enclosure, ventilation, lighting, temperature control, and cable management systems, all designed around your equipment.
Can substations be fully bespoke?
Yes. Every substation is designed to suit your exact layout, equipment, and site requirements.
What finishes are available?
We offer galvanised steel, C5 paint systems, powder coating, and custom RAL finishes depending on the environment.
Do you supply bases with the substations?
Yes. We can provide integrated steel bases, including galvanised or C5 painted options with cable entry provisions.
Do you provide access platforms and staircases?
Yes. We design and supply bespoke external platforms and staircases where required.
