Delta HV delivers high voltage electrical infrastructure across the UK; from feasibility and design through to construction, commissioning and long-term support. Turnkey projects, handled end to end.
We work with utilities, contractors and organisations where reliable power isn't optional.
Our teams bring deep technical expertise, honest communication and the experience to keep complex projects on time, on spec and fully compliant.

Safe, compliant HV designs developed in-house, engineered to DNO standards, optimised for buildability, lifecycle performance and seamless approval across UK networks.
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Experienced teams delivering HV installations, substation builds and cable works, safely programmed, tightly managed and completed to exacting industry standards nationwide.
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Planned and reactive maintenance keeping HV assets compliant, operational and resilient, including inspections, testing, fault response and long-term asset care programmes.
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Safe, compliant HV designs developed in-house, engineered to DNO standards, optimised for buildability, lifecycle performance and seamless approval across UK networks.
See More
Experienced teams delivering HV installations, substation builds and cable works, safely programmed, tightly managed and completed to exacting industry standards nationwide.
See More
Planned and reactive maintenance keeping HV assets compliant, operational and resilient, including inspections, testing, fault response and long-term asset care programmes.
See More
Delta HV specialises in the design and manufacture of bespoke relay panels, protection panels and control switchgear for high-voltage and medium-voltage applications.
See MoreEvery project brings its own challenges from a technical, regulatory and operational point of view. Our case studies show how Delta HV delivers complex electrical infrastructure in a wide variety of sectors, with safe, compliant and reliable outcomes for clients across the UK.
Explore the detail behind the work and see how we approach design, manufacturing, construction and maintenance in the real world.