Excalon

What Excalon does

Excalon Ltd is a UK-based infrastructure contractor specialising in extra high-voltage (EHV) power cable installation and related utility services for the electricity sector. Founded in 2002 and headquartered at a depot in Salford (Manchester) with a registered office in Leeds, the company operates as a wholly owned subsidiary of Renew Holdings plc. Its core service offering spans the full lifecycle of electricity distribution and transmission infrastructure — feasibility studies, design, cable installation up to 400kV, cable jointing and termination, testing, commissioning, and maintenance — delivered through dedicated divisions including EHV Power Cables, Network Connections (NERS-accredited Independent Connection Provider services up to 400kV), Surfacings and Reinstatement, Traffic Management, and Directional Drilling. Through recent acquisitions (Emerald Power, PWR-X, and EDES in 2025-2026), the company has extended its capabilities into overhead line services, specialist cable jointing, and high-voltage engineering design, enabling turnkey design-through-execution delivery across voltages from 11kV to 400kV. The company also offers Engineering, Procurement and Construction (EPC) services for power station development including flexible generation, battery energy storage systems, and grid connections.

The business operates on a project-based, contract-driven revenue model, securing work through competitive tendering, framework agreements, and direct appointments with major UK Distribution Network Operators (DNOs) — National Grid, Northern Powergrid, SP Energy Networks, Western Power Distribution, and SP Electricity North West — as well as transport authorities, EPC contractors, and energy developers. Notable contract wins include the £640m National Grid Electricity Distribution Cable Installation Framework (2026-2028) and the £30m Bradford West 132kV project for Northern Powergrid. Excalon maintains a broad accreditation portfolio (ISO 9001/14001/45001, NERS, Achilles UVDB, Achilles Link-up, FORS, SafeContractor, Cyber Essentials Plus) and deploys an internal E-Track Works Management System for job dispatch, real-time progress tracking, and safety compliance auditing. Go-to-market is exclusively direct enterprise field sales; there is no consumer-facing channel. The company employs approximately 250 staff and operates throughout the United Kingdom, with strategic technology partnerships with MTU/Rolls-Royce, BYD, RISEN/SYL, Siemens, and Schneider supporting its EPC and flexible generation activities.

Name

Excalon

Legal name

Excalon Ltd

Website

https://excalon.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

251–500 employees

Short description

Excalon is a UK-based infrastructure contractor specialising in extra high-voltage power cable installation, jointing, and grid connection services up to 400kV for major Distribution Network Operators and energy developers.

Ownership category

akta.pro rank

Product category

Utility Infrastructure Contracting

NAICS

Power and Communication Line and Related Structures Construction (237130)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Underground transmission & distribution cable EPC (civil + cable install) (EUADAKAB)

akta.pro secondary industries

Substation EPC & construction (AIS/GIS, greenfield/brownfield) (EUADAKAC), Testing, Commissioning & Energization Services (HV) (EUAEABAI), Overhead Transmission Line EPC (HV/EHV) (EUAEABAA), Power Plant Electrical Systems EPC (Switchyard, Transformers, Protection & Controls) (EUAEAAAM), Service Drops, Metering & Grid Connections (Last-Mile) (EUAEACAG)

Keywords

• High voltage cable installation
• Utility infrastructure services
• Independent connection provider
• EHV power networks
• Cable jointing services

Headquarters

HQ city

Leeds

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Utility Infrastructure Services: Excalon generates revenue through providing integrated infrastructure services to utility companies and infrastructure developers. Revenue is project-based and contract-driven, secured through framework agreements (e.g. £640m National Grid Cable Installation Framework), competitive tenders, and direct DNO appointments. The company acts as principal contractor, ICP, and EPC contractor delivering EHV cable installation, civil works, traffic management, and design services.
2. EPC / Turnkey Power Plant Solutions: Engineering, Procurement and Construction services for power station development including flexible generation assets, battery storage, and grid connections up to 400kV, delivered as a turnkey contractor.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Excalon is a UK infrastructure contractor that designs, installs, joints, tests and commissions extra high voltage (EHV) power cable systems up to 400kV for Distribution Network Operators (DNOs), power developers, and transport infrastructure clients. The company delivers full turnkey Independent Connection Provider (ICP) and Engineering, Procurement and Construction (EPC) services spanning feasibility studies, civil works, cable installation, substation construction, commissioning, surfacing and reinstatement, traffic management, and overhead line services.

Product overview

Excalon is a leading infrastructure contractor offering a comprehensive portfolio of utility services through its core divisions: EHV Power Cables Division (design, installation and jointing up to 400kV), Network Connections (NERS-accredited ICP services), Feasibility Studies, Directional Drilling Services, Surfacings and Reinstatement, Traffic Management Division, and Overhead Line Services via subsidiary Emerald Power. The company also provides Engineering, Procurement and Construction (EPC) services for power station development including battery storage and flexible generation. Through recent acquisitions of Emerald Power (overhead lines), PWR-X Ltd (cable jointing), and EDES (design services), Excalon has built an integrated, end-to-end service offering from design through to project execution across the full voltage range from 11kV to 400kV.

Differentiator

Problem solved

Functional benefit

Brands

• Emerald Power: Part of Excalon Holdings Group, specialising in Overhead Line Services including overhead lines new builds, pole replacement, maintenance schemes, distribution networks up to 132/275kV, tower construction and stringing, and jointing capabilities.

Products and services

• EHV Power Cables Division

Quantifiable outcome

• 10,000+ reinstatements managed per year
• +2 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Five partnerships are on record, tiered core and minor.

• National Grid Electricity Distribution (NGED)coreChannel Partner/ Reseller/ Distributor · 30 June 2026Excalon has been appointed to National Grid Electricity Distribution's £640m Cable Installation Framework. The framework covers installation of 66kV, 132kV and lower-voltage cable circuits including associated jointing, testing and commissioning works across NGED's East Midlands, West Midlands, South West and South Wales licence areas. The framework runs from July 13, 2024 until July 12, 2027, with an option to extend by 12 months.
• Electricity Distribution Engineering Services Ltd (EDES)coreStrategic or Co-development Partner · 19 May 2026EDES is a highly regarded provider of high-voltage engineering design services across the energy distribution sector, covering both underground and overhead networks. Acquired by Excalon Holdings in a deal worth up to £9m (initial £6.5m cash consideration, up to £2.5m conditional on performance). Enables Excalon to deliver projects from design through to all stages of execution.
• PWR-X LtdcoreStrategic or Co-development Partner · 11 May 2026PWR-X Ltd, based in Manchester, is a specialist provider of cable jointing services to the power industry. Acquired by Excalon for £1.1m on a cash and debt-free basis. Strengthens Excalon's capabilities in the high voltage power market with specialist cable jointing expertise.
• Emerald Power LtdcoreStrategic or Co-development Partner · 13 October 2025Emerald Power, based in Cheshire, is a specialist in overhead line maintenance and upgrades for Distribution Network Operators in the North West. It operates across voltage ranges from 11kV to 132kV. Acquired by Excalon Holdings for an initial £7.8m with up to £4.5m additional contingent consideration. Emerald Power brings over 80 years of management team experience and 25+ experienced linesmen.
• CITB (Construction Industry Training Board)minorOthersExcalon works in partnership with the CITB and a number of Training Providers to ensure continuous development of its workforce, delivering an average of 4 days training per person per year.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Amey plc: Amey, part of Ferrovial, is a UK infrastructure services provider with significant utilities, highways and rail exposure. It competes with Excalon for multi-utility infrastructure, utility diversion and cable/civils works, particularly through its utilities division.
• Morgan Sindall Group plc: Morgan Sindall is a UK construction and infrastructure group with utilities, energy and regulated infrastructure divisions. Its infrastructure services arm competes for EHV cable installation and DNO framework work, overlapping with Excalon's ICP and T&D services.
• Kier Group plc: Kier is a UK infrastructure, construction and property services group. Its utilities and infrastructure business (incorporating previously acquired Sanders Associates) competes with Excalon for cable installation, civils and traffic management work for DNOs and local authorities.
• Skanska UK: Skanska is a major international contractor with UK operations spanning roads, rail and utilities. Its UK infrastructure arm bids for energy and utility contracts that overlap Excalon's T&D and district heating cable/civils work.
• Costain Group plc: Costain is a UK infrastructure and engineering solutions contractor with substantial energy and utility exposure, including power, water and transport. Like Balfour Beatty, it operates as a larger incumbent competing for DNO framework and ICP work that overlaps with Excalon's core scope.
• Balfour Beatty plc: Balfour Beatty is one of the largest UK infrastructure contractors with significant Power T&D and cable installation capability serving DNOs and Transmission Operators. It is a broader incumbent than Excalon (rail, construction services, US operations) but directly competes for the same EHV cable and contestable ICP framework awards.

Direct peers

• VolkerWessels UK: VolkerWessels UK operates VolkerRail, VolkerHighways and VolkerStevin rail, highways and energy cable installation businesses. It competes directly with Excalon in the UK cable installation and ICP market and is a more direct mid-tier peer than the wider general contractors above.
• Freedom (part of NGED): Freedom is National Grid's in-house ICP and one of the largest NERS-accredited connection providers in the UK, with capability across distribution and contestable works. As NGED's incumbent ICP, it is a structural competitor for the same framework scope that Excalon also bids into.
• Murphy Group (J. Murphy & Sons): Murphy is a UK infrastructure contractor with a dedicated Power Networks division delivering cable, overhead line and substation works for DNOs and developers. It is one of the closest mid-tier peers to Excalon in capability and customer mix.

Emerging players

• Energetics (Electricity) / Enertech Holdings: Energetics is a specialist UK ICP and networks contractor delivering cable installation, jointing and connections for DNOs and developers. As a smaller specialist, it competes with Excalon for contestable connections and lower-voltage cable work, particularly on developer-led projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ExcalonLtd

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Excalon