Ener-G Services Limited

What Ener-G Services Limited does

Ener-G Services Limited is a privately held Scottish electrical engineering firm providing end-to-end design, installation, commissioning, and maintenance services across renewables, marine, and offshore sectors. The company operates as principal contractor on complex high-voltage electrical infrastructure projects, with a core specialisation in grid-scale and transmission-scale Battery Energy Storage Systems (BESS) ranging from 50MW to 300MW+. Notable technical capabilities include 275kV transmission-level grid connection (making it Scotland's only contractor with proven 275kV BESS experience), specialist cable jointing and terminations up to 66kV, SCADA integration for remote monitoring, and proprietary space-efficient BESS layouts that reduce land use by approximately 30%. Supporting service lines cover wind farm infrastructure, solar grid integration, vessel and offshore platform electrical systems, subsea cable jointing, site earthing and lightning protection, fibre optic networks, and 24/7 emergency response for switchgear and transformer faults.

The company's commercial model is fixed-price project contracting with enterprise clients, generated through direct enterprise field sales and consultation requests via website, phone, and email. Pricing is not publicly disclosed and quotations are project-specific. Customers are renewable energy developers and operators — primarily battery storage developers (Eelpower, Zenobe), wind farm operators (Statkraft), and grid operators (SSE) — plus marine vessel operators and offshore platform operators. The company is headquartered in Westhill, Aberdeenshire, and serves Scotland and the broader UK market. Revenue is not publicly disclosed; the company has delivered over 15 grid-scale BESS projects totalling more than 500MWh with a claimed 100% on-time and on-budget delivery record and is independently owned with no disclosed external equity backing.

Name

Ener-G Services Limited

Legal name

Ener-G Services Limited

Website

https://energservices.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Ener-G Services Limited is a privately held Scottish electrical engineering principal contractor specialising in grid-scale battery energy storage systems, wind, solar, and offshore electrical infrastructure up to 275kV, serving renewable energy developers and operators across the UK.

Ownership category

akta.pro rank

Product category

Renewable Energy Electrical Engineering Services

NAICS

Electrical Contractors and Other Wiring Installation Contractors (23821), Electric Power Transmission, Control, and Distribution (22112)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Electric Services (4911)

akta.pro primary industry

BESS EPC, Integration & Commissioning (EUAFAAAB)

akta.pro secondary industries

Energy Management Systems (EMS), SCADA & Dispatch/Optimization Software for Storage (EUAFAAAF), BESS Operations, Maintenance & Asset Performance Management (APM) (EUAFAAAG), Energy Storage & Microgrid Electrical Infrastructure (BESS, Controls) (IMAFAHAE)

Keywords

• Electrical engineering services
• Battery energy storage systems
• Renewable energy infrastructure
• High voltage installation
• Grid connection services

Headquarters

HQ city

Westhill

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Others

Revenue model

1. Electrical Engineering Project Services: Full project lifecycle electrical engineering services as principal contractor, including design, installation, commissioning, and ongoing maintenance for renewables, marine, and offshore sectors. Revenue generated through fixed-price project contracts with scope covering complete electrical infrastructure delivery.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Ener-G Services Limited operates as a principal contractor delivering end-to-end electrical engineering solutions across the renewables, marine, and offshore sectors. Its core offering centres on the design, installation, commissioning, and ongoing maintenance of grid-scale Battery Energy Storage Systems (BESS) ranging from 50MW to 300MW+, complemented by wind farm infrastructure, solar integration, and high-voltage grid connection services up to the 275kV transmission level.

Product overview

Ener-G Services Limited is an electrical engineering services provider operating across renewables, marine, and offshore sectors. The company offers end-to-end electrical engineering solutions as principal contractor, encompassing the full project lifecycle from design through commissioning and ongoing maintenance. The core product portfolio centers on Battery Energy Storage Systems (BESS) with grid-scale installations from 50MW to 300MW+, complemented by Wind Farm Infrastructure, Solar Integration, and Grid Connection Services up to 275kV transmission level. Supporting service offerings include Marine Electrical Services, Offshore Electrical Services, Site Earthing & Lightning Protection, Fibre Optic Network Installation, Testing & Commissioning (HV & LV), Cable Jointing & Terminations (up to 66kV), Switchgear Maintenance & Emergency Response, and Principal Contractor Project Management. The company specialises in first-of-kind renewable energy projects and has delivered Scotland's first grid-scale battery storage system, the UK's largest battery storage system, and holds transmission-scale expertise at 275kV.

Differentiator

Problem solved

Functional benefit

Products and services

• Battery Energy Storage Systems (BESS) Design, installation, and commissioning of grid-scale and transmission-scale energy storage systems ranging from 50MW to 300MW+, including thermal management, fire protection systems, and space-efficient layouts reducing land use by 30%. Targeted at battery storage developers and renewable energy operators.
• Wind Farm Infrastructure Electrical systems, cable networks, substation installation, and emergency maintenance services for wind farm developments. Targeted at wind farm operators and renewable energy developers.
• Solar Integration Grid connection solutions and hybrid renewable projects combining solar with other energy storage and generation systems. Targeted at solar project developers and renewable energy operators.
• Grid Connection Services Electrical grid connection services ranging from distribution level up to 275kV transmission level, including complex substation and switchgear installation. Targeted at battery storage developers, renewable energy operators, and grid operators.
• Marine Electrical Services Vessel electrical systems design and installation, marine infrastructure support, corrosion-resistant solutions for harsh maritime environments, and emergency repair services. Targeted at marine vessel operators and maritime infrastructure providers.
• Offshore Electrical Services Platform electrical systems, subsea cable jointing and terminations, high-voltage offshore installations, and 24/7 emergency response capability. Targeted at offshore oil and gas platforms and offshore renewable installations.
• Cable Jointing and Terminations Professional cable jointing and terminations services up to 66kV for complex energy infrastructure projects, including over 33,000 metres of multi-voltage cable installation capability. Targeted at renewable energy developers and grid operators.
• Testing and Commissioning (HV and LV) Comprehensive testing and commissioning services for high-voltage and low-voltage electrical systems. Targeted at renewable energy developers, grid operators, and industrial infrastructure clients.
• Switchgear Maintenance and Emergency Response Maintenance services and rapid emergency response for switchgear systems across the energy sector with 24/7 availability. Targeted at energy infrastructure operators requiring minimised downtime.
• Principal Contractor Project Management End-to-end project management as principal contractor, taking full ownership of complex electrical engineering projects from design through commissioning to ongoing maintenance. Targeted at enterprise clients requiring a single accountable contractor.
• Site Earthing and Lightning Protection Comprehensive site earthing and lightning protection systems for industrial and energy infrastructure. Targeted at industrial and energy infrastructure operators.
• Fibre Optic Network Installation Design and installation of fibre optic networks for communications and data transmission in energy sector applications. Targeted at renewable energy developers and energy infrastructure operators.
• Fordtown 50MW BESS Project 50MW battery storage project delivery at Fordtown (Kintore) for Eelpower, incorporating innovative drainage solutions for water table challenges and a 30% more compact BESS layout. Targeted at battery storage developers facing challenging site conditions.
• Blackhillock 300MW BESS Project 300MW battery storage system at Blackhillock, Keith, with direct 275kV transmission grid connection for Zenobe, establishing transmission-level capability in Scotland. Targeted at large-scale battery storage developers.

Quantifiable outcome

• Nearly 100% uptime achieved at Dundee BESS facility since February 2023 completion
• +4 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• EelpowercoreStrategic or Co-development Partner · 1 February 2023Strategic partnership delivering Scotland's first grid-scale battery storage system (50MW Dundee) and second 50MW project at Fordtown. Ener-G Services transitioned from subcontractor to principal contractor role, providing complete electrical engineering delivery including design, installation, commissioning, and ongoing maintenance. Both projects maintaining excellent operational performance.
• ZenobecoreStrategic or Co-development PartnerPartnership delivering UK's largest battery storage system - 300MW at Keith with 275kV transmission connection. Ener-G Services created transmission-level capability in Scotland that didn't previously exist, establishing the company as Scotland's only contractor with proven 275kV battery storage experience.
• StatkraftcoreStrategic or Co-development PartnerEmergency response partnership for critical infrastructure support. Delivered 72-hour turnaround on critical transformer fault at Baillie Wind Farm, minimising generation revenue losses. Partnership established ongoing relationship for future project support.
• SSEminorImplementation/ SI/ Consulting PartnerGrid operator coordination for final energisation and grid integration. Ener-G Services coordinated with SSE for grid connection and integration of battery storage systems with Scottish grid infrastructure.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Powersystems UK: UK HV electrical engineering contractor delivering cable jointing, substations and grid connections up to 400kV. Directly comparable to Ener-G's HV cable, substation and grid-connection service lines for renewable and transmission projects.
• Kirby Group Engineering: Mechanical and electrical engineering contractor with significant data centre, renewables and HV transmission delivery. Competes for similar renewable and grid-connection EPC scopes to Ener-G.
• Jones Engineering: Mechanical and electrical contractor with strong UK and European renewable energy EPC track record, including BESS and wind farm electrical infrastructure. Directly comparable specialist M&E delivery model.
• Morrison Energy Services: UK-based electrical and infrastructure contractor delivering HV connections, substations and grid-scale energy infrastructure. Directly comparable to Ener-G as a competing UK specialist contractor bidding on BESS, wind and grid-connection projects.
• Smith Brothers (High Voltage) Ltd: UK HV electrical contractor specialising in substations, BESS, wind and grid connections. Closely comparable service mix and customer overlap with Ener-G's renewables and grid-connection business.
• Freedom Group (NG Bailey): UK electrical infrastructure contractor with dedicated energy and power networks division delivering HV connections, substations and renewable integration. Directly competes with Ener-G on BESS and grid-connection EPC work.

Broad incumbents

• Balfour Beatty: Major UK infrastructure group with substantial power transmission and renewables construction activities. Comparable on transmission and renewable EPC scopes; a credible larger-scale competitor in UK BESS delivery.
• Worley: Global energy, chemicals and resources EPC and consulting firm with renewables and energy-transition execution capabilities. Larger incumbent capable of bidding on grid-scale BESS projects in the UK.
• Wood Group: Global energy engineering and EPC services provider with broad renewables and grid capabilities across the UK. Larger incumbent that competes on bigger BESS/wind EPC scopes and could enter Ener-G's specialist 275kV niche.

Emerging players

• Burns & McDonnell: US-headquartered EPC firm actively growing its UK transmission, substation and BESS practice. Comparable in HV electrical delivery scope and increasingly relevant as a competitor for UK BESS and grid-connection work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/ener-g-services-limited

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

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 Ener-G Services Limited