What Powersystems UK does

Powersystems UK Ltd. is a privately-held, employee-owned specialist high voltage electrical engineering contractor headquartered in Yate (Bristol), United Kingdom. Founded in 1977 by Mike Wilsmore and Derek Earby — both formerly specialist engineers at the Midlands Electricity Board — the company delivers turnkey high voltage infrastructure services spanning 11 kV to 400 kV, including project management, design and build, procurement, cable installation, substation construction, switchgear and transformer installation, testing and commissioning, and ongoing maintenance. Its core technical capability is anchored by NERS accreditation (Lloyds Register) as an Independent Connection Provider (ICP), originally registered as the UK's first ICP in 1997 and currently accredited for contestable connections up to 132 kV under Ofgem's Competition in Connections framework.

The company operates an enterprise field-sales motion targeting large infrastructure projects across six end-markets: renewable energy developers (wind, solar, anaerobic digestion, hydro, tidal, hydrogen), grid stability operators (BESS and rotating stabilisers under NESO frameworks), generation companies (CHP, gas peaking / STOR), commercial and industrial facilities (hospitals, ports, data centres, manufacturing), nuclear power, and EV charging infrastructure. All delivery is performed by direct, in-house project teams — covering engineering, cable jointing, civils coordination, and commissioning — without disclosed subcontracting dependence for HV scope. Projects are quoted individually on a project-based pricing model, with no publicly disclosed rate cards or tiered pricing.

Commercially, Powersystems monetises entirely through project-based professional services contracts, and its revenue base is concentrated in the United Kingdom only. Documented scale includes 1,569 grid connections completed since 2000, approximately 24-30% of all UK onshore wind farm generation connected by the firm, 6.1 GW of cumulative installed and contracted renewable energy capacity, and landmark engagements such as Dogger Bank (world's largest offshore wind farm), Pen Y Cymoedd (76 turbines / 228 MW), South Kyle (240 MW), and a UK first Greener Grid Park. The ownership structure — transitioned in 2019 to an Employee Owned Trust — and the absence of outside institutional capital distinguishes it from typical VC- or PE-backed infrastructure services businesses.

Name

Powersystems UK

Legal name

Powersystems UK Ltd.

Website

https://powersystemsuk.co.uk

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

51–100 employees

Short description

Powersystems UK is an employee-owned specialist high voltage electrical engineering contractor delivering turnkey grid connections and electrical infrastructure from 11 kV to 400 kV to renewable energy developers, distribution network operators, and industrial clients across the United Kingdom.

Ownership category

akta.pro rank

Product category

High Voltage Electrical Engineering Services

NAICS

Electric Power Transmission, Control, and Distribution (22112), Electric Power Distribution (221122), Electric Bulk Power Transmission and Control (221121)

SIC

Switchgear & Switchboard Apparatus (3613), Power, Distribution & Specialty Transformers (3612), Electric Services (4911)

akta.pro primary industry

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA)

akta.pro secondary industries

Solar Project Development & IPP (Utility-Scale & Rooftop) (EUAMABAA), Distribution Network Construction (Feeders, Laterals, Service Drops) (IMAFAHAC), Backup & Resilience Power Systems (Standby Generators, Critical Facilities) (EUACALAG), Grid-Scale Power Conversion & Interconnection (PCS, Grid-Tie Inverters, Converter Stations) (IMAGAAAI)

Keywords

• High voltage electrical services
• Grid connection services
• Renewable energy infrastructure
• Substation design construction
• Electrical balance of plant

Headquarters

HQ city

Bristol

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. High Voltage Engineering Services: Project-based engineering services revenue generated through design and build contracts, electrical infrastructure installation, testing and commissioning, and maintenance services for high voltage electrical systems across renewable energy, generation, grid stability, and commercial/industrial sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Powersystems UK is an employee-owned electrical engineering company that designs, builds, and commissions high voltage electrical infrastructure ranging from 11 kV to 400 kV. Operating as the UK's first Independent Connection Provider (ICP), the company delivers turnkey grid connections, substation design and build, cable installation, switchgear and transformer installation, and testing and commissioning for renewable energy, grid stability, generation, commercial/industrial, nuclear, and EV infrastructure projects.

Product overview

Powersystems UK is an employee-owned electrical engineering company established in 1977, providing high voltage infrastructure services from 11 kV to 400 kV. The company operates as an Independent Connection Provider (ICP) under the NERS accreditation scheme, offering a unified portfolio of services centered on electrical infrastructure design, installation, and commissioning. Core offerings include grid connections, electrical balance of plant, substation design and build, cable installation, switchgear installation, transformer services, and testing and commissioning. These services support multiple sectors including renewable energy (wind, solar, anaerobic digestion, hydroelectric, tidal, hydrogen), grid stability (battery storage and rotating stabilisers), generation (CHP and gas peaking), commercial and industrial, nuclear power, and EV infrastructure. The company does not operate a software or platform product; its offerings are physical electrical engineering services delivered through specialist project teams.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrical Infrastructure Services

Quantifiable outcome

• Connected 30% of all UK onshore wind farm generation
• +5 more outcomes

Named customers10 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered core.

• Mitsubishi EuropecoreStrategic or Co-development Partner · 1 January 2017Powersystems worked in partnership with Mitsubishi Europe to deliver the entire HV and LV electrical infrastructure for the Parc Adfer Energy-from-Waste facility. The project combined Mitsubishi's leading high-voltage switchgear products with Powersystems' installation and commissioning expertise. This marked the first major collaboration between the two companies.
• CNIMcoreImplementation/ SI/ Consulting Partner · 1 January 2017CNIM was the EPC contractor for Parc Adfer Energy-from-Waste facility and awarded Powersystems the electrical infrastructure contract for the 20 MW project at Deeside, including 33 kV grid connection, transformers, switchgear, and commissioning.
• Jones Bros Civil Engineering UKcoreImplementation/ SI/ Consulting Partner · 1 January 2017Jones Bros Civil Engineering UK appointed Powersystems to design, supply, install, test and commission the 132 kV grid connection for Clocaenog Forest Wind Farm (96 MW). Powersystems also worked with Jones Bros on Bryn Blaen Wind Farm (14.1 MW) for developer Njord Wind Energy.
• Fred Olsen RenewablescoreStrategic or Co-development Partner · 1 January 2008Fred Olsen Renewables appointed Powersystems and Jones Bros Civil Engineering to carry out the civil and electrical balance of plant contract for the 138 MW Crystal Rig II wind farm. Powersystems delivered electrical design, 110 km of 33 kV cabling, 60 turbine substations, and full commissioning for this major Scottish wind project.
• BoralexcoreStrategic or Co-development PartnerPowersystems delivered the full 132/33 kV Electrical Balance of Plant for the 108 MW Limekiln Wind Farm in partnership with Boralex and R.J. McLeod, enabling renewable electricity for around 100,000 homes.
• R.J. McLeodcoreImplementation/ SI/ Consulting PartnerPowersystems worked alongside R.J. McLeod on multiple wind farm projects including Limekiln (108 MW) and Douglas West (46.8 MW) wind farms. Douglas West was the 33rd project completed together.
• Western Power DistributioncoreTechnology or IntegrationWestern Power Distribution (WPD) is the Distribution Network Operator (DNO) for the Bryn Blaen Wind Farm connection area. Powersystems works with all DNOs across the UK including WPD for grid connections and network integration under the Ofgem Competition in Connections framework.
• Njord Wind EnergycoreStrategic or Co-development PartnerNjord Wind Energy developed the Bryn Blaen 14.1 MW Wind Farm in Wales where Powersystems was appointed as Electrical Balance of Plant contractor, delivering both the turbine substation and the generation substation at the point of connection.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Balfour Beatty plc: Major UK infrastructure group with significant HV transmission, substation, and renewable energy connections capability — a broader incumbent competing for the same large-scale HV contracts that Powersystems targets.
• National Grid plc: UK electricity transmission system operator and DNO infrastructure owner whose Stability Pathfinder and ESO framework contracts directly overlap with the grid stability and HV connection work Powersystems delivers.
• SSE plc (SSE Enterprise / Contracting): Vertically integrated UK utility with HV contracting and renewable development arms competing for HV infrastructure and grid connection business in the same renewable and industrial sectors as Powersystems.
• ABB Ltd (Hitachi Energy): Global supplier of HV switchgear, transformers, and grid connection equipment whose products Powersystems integrates into its installed solutions — a key equipment-side incumbent in the same HV infrastructure value chain.
• Morgan Sindall Group plc (Infrastructure): UK infrastructure contractor delivering HV electrical infrastructure, substations, and energy projects as part of a broader portfolio — competes for renewable and utility HV contracts similar to Powersystems.

Others

• Siemens Energy AG: Global HV equipment OEM and grid technology supplier (switchgear, transformers, grid control) whose technology Powersystems specifies and installs — an enabling ecosystem participant rather than a direct competitor.

Direct peers

• Clancy Group (Clancy Docwra): UK utility infrastructure contractor providing HV cabling, substation, and grid connection services to DNOs and renewable developers — direct overlap on UK HV infrastructure delivery.
• Smith Brothers (Electrical Engineers) Ltd: UK-based high voltage electrical contractor providing contestable grid connections, substation design and build, and HV cable installation for renewable and industrial clients — directly overlapping with Powersystems' ICP and 11-132 kV turnkey service offering.
• Enisca Browne: UK HV electrical infrastructure specialist delivering substations, HV installation, and grid connections for utilities and renewable developers — overlapping service portfolio with Powersystems' turnkey HV work.
• Freedom Group (now part of VINCI Energies): Major UK ICP-accredited HV connection provider delivering contestable grid connections, substations, and HV infrastructure for DNO/developers — the closest scaled direct competitor to Powersystems in the NERS-accredited ICP market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xtwitter.com/powersystemsuk
• LinkedInlinkedin.com/company/powersystems-uk-ltd
• Instagraminstagram.com/powersystemsuk

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Powersystems UK