Electrical substations form the backbone of power distribution networks, transforming high-voltage transmission to usable distribution voltages for industrial, commercial and renewable energy applications. Delta HV specialises in the design, installation and commissioning of primary and secondary substations from 11kV through to 132kV. Our expertise spans grid-connected substations, private networks, renewable energy integration and data centre power infrastructure, delivering reliable, compliant and future-proofed electrical systems.
Primary substations receive power from transmission networks and step down voltage for local distribution. We design and build complete grid and primary substation installations including HV switchgear, power transformers, protection systems, earthing arrangements and control equipment. Every project is engineered to ENA G81 standards, with full coordination with DNO/IDNO requirements, ensuring safe integration with existing network infrastructure and long-term operational reliability.
Secondary substations provide final voltage transformation for end users, typically stepping down from 11kV to 400V LV distribution. Delta HV delivers turnkey secondary substation solutions including ground-mounted, pole-mounted and containerised designs. We handle all civils, electrical installation, metering, protection and commissioning activities, delivering fully operational substations ready for service connection.
Data centres demand absolute reliability, precision engineering and 24/7 operational resilience. We design and install high-voltage and low-voltage electrical systems for mission-critical facilities, including redundant power distribution architectures, UPS integration, standby generation and intelligent monitoring systems.
The transition to renewable energy requires robust substation infrastructure to manage variable generation and grid integration. Delta HV provides complete electrical engineering services for solar farms, wind energy projects, battery storage installations and hybrid renewable systems. We design MV collection networks, grid connection substations, SCADA integration and DNO G99 compliance solutions that enable safe, efficient connection of renewable generation to distribution networks.
Modern substations require intelligent protection and control systems that provide rapid fault clearance, load management and remote monitoring capability. We integrate numerical protection relays, SCADA platforms, RTUs and substation automation equipment to deliver comprehensive visibility and control. Our systems support compliance with grid code requirements while enabling operators to optimise network performance and respond quickly to changing conditions.
Energy storage is central to grid stability, peak shaving and renewable integration. We provide electrical design, installation and commissioning services for utility-scale and commercial battery storage projects, including AC and DC coupling, inverter integration, protection systems and grid synchronisation equipment. Our team works with lithium-ion, flow battery and emerging storage technologies to deliver safe, compliant and high-performance BESS installations fully integrated with substation infrastructure.
Substations require proactive maintenance to sustain performance and meet regulatory obligations. Delta HV offers planned maintenance contracts covering HV switchgear, transformers, protection relays, earthing systems and auxiliary equipment. We provide thermal imaging surveys, oil analysis, relay testing, insulation resistance testing and comprehensive compliance inspections to keep your substation infrastructure operating safely and efficiently throughout its operational life.
Unit D3 / D2
Chaucer Business Park
Dittons Road
Polegate
BN26 6QH
01323 700036
info@deltahv.co.uk
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