High Voltage Expertise for Business Continuity
HV Services

ENWCML Helps keep Your Power Flowing. Ensure reliable and efficient high voltage (HV) infrastructure for your industrial, commercial, healthcare, education, or public sector organisation.
We are a leading provider of comprehensive HV asset services across the UK, specialising in supporting complex high voltage connections to the grid. Our focus areas cater to organisations operating privately owned HV transformers and associated equipment, crucial for maintaining a resilient electricity supply.
Why Choose ENWCML for Your High Voltage Needs?
Unparalleled Expertise
Our team of highly qualified engineers possesses extensive experience in all aspects of HV asset management, including maintenance, replacement, and upgrade services.
Nationwide Reach with Regional Focus
We deliver our services across the UK, with a dedicated focus on the North West and North East of England. This includes Cumbria, Lancashire, Cheshire, Merseyside, Greater Manchester, Middlesborough, Redcar, Darlington, and Hartlepool.
Independent Connections Provider (ICP) Advantage
As an ICP, we offer a competitive and flexible alternative to traditional DNO (Distribution Network Operator) services. We ensure your HV infrastructure meets the highest safety, resilience, and compliance standards while seamlessly integrating with regional networks.
Trusted by the Networks
ENWCML is a subsidiary of Electricity North West Limited (ENWL), the licensed DNO for the North West of England. This strong association provides you with the comfort that our trusted relationships in the North West is founded on proven expertise, gold standard health and safety procedures and the availability of resources of a leading industry player.

Our Comprehensive High Voltage Service Portfolio
HV Asset Maintenance:
- Preventive maintenance programs to optimize equipment performance and lifespan.
- Emergency repair and call-out services to minimize downtime.
- Condition monitoring and diagnostic testing to identify potential issues before they escalate.
HV Transformer Services:
- Installation, replacement, and refurbishment of HV transformers.
- Independent Transformer oil testing and management.
High Voltage Design and Construction:
- Expert design and build services for new HV infrastructure projects.
- Extensions and modifications to existing HV systems.
Control, Operation & Maintenance Agreements (COMA):
- • Comprehensive packages covering the full spectrum of HV asset management, tailored to your needs for complete peace of mind.
Benefits of Partnering with ENWCML

At ENWCML, we understand the critical role a reliable HV system plays in your organisation’s operations. Contact us today to discuss your specific requirements and discover how our comprehensive HV asset services can ensure your power keeps flowing.
Engineering, Procurement and Construction (EPC)
EPC Services

EPC is a service we provide for the construction of large infrastructure projects. As a construction and maintenance business we are well placed to provide turnkey solutions for developers and funders of any generation projects. Our balance sheet allows us to work with the strictest of investment criteria and provides you with a bankable counterparty to deliver your project.
We offer the financial stability to entrust the largest of projects combined with the knowledge and expertise to deliver on time, in budget and to certified specification
Our knowledge of design and installation of all types of electrical infrastructure and how this integrates onto our network puts us in prime position to help from feasibility stage right through to construction. Ensuring that your project will be acceptable to the local DNO is key to ensuring you do not suffer unforeseen connection charges later in the development process. Delivering our own large scale infrastructure projects has given us the experience of what makes these projects work allowing us to pass this knowledge on to you for your own project.

Work with our experienced teams to deliver your project
We can deliver a turnkey solution for all of your EPC needs providing EPC wrap services to meet investment criteria whilst mitigating risk.
We will assist with the construction phase, and can also assist you with application for G99, G5, P28 studies and G100 installations. Being involved from the start of your process allows us to work together to ensure the project is a success. Through our buying power and industry connections we are able to procure all materials for these projects at the keenest pricing allowing us to be very competitive with our overall EPC costs.
Boosting Your Private Network Efficiency: ENWCML’s High Voltage and Low Voltage Expertise
Private Networks

Optimize your private network’s performance and safety with Electricity North West Construction and Maintenance Limited (ENWCML). As a leading provider of High Voltage Asset Maintenance and Upgrades, HV Design and Construction, and comprehensive Low Voltage infrastructure solutions, ENWCML empowers businesses throughout the UK.
Unlocking Efficiency and Cost Savings
Expert High Voltage Maintenance
Ensure optimal performance and reliability with our 30+ years of experience in maintaining high voltage assets like transformers and switchgear. We offer comprehensive maintenance, replacement, and upgrade services, extending the lifespan of your critical equipment and minimizing downtime.
Seamless HV Design and Construction
Planning a new private network or expanding an existing one? Our team of qualified engineers provides detailed design and construction solutions that adhere to the strictest safety standards and national regulations.
Low Voltage Expertise
We go beyond high voltage. Our specialists handle all aspects of your low voltage infrastructure, from switchgear installation and maintenance to power management solutions, ensuring safe and efficient delivery of electricity throughout your site.
Tailored Solutions
We understand that every private network is unique. That’s why we offer flexible and customised solutions to meet your specific needs and budget, optimising performance and minimising energy costs.
Your trusted partner
Private Network Management
Wide Coverage
We operate across the UK.
Expertise
As a division of the North West Electricity Group, we leverage our in-depth knowledge of the regional grid and regulations to ensure seamless integration of your private network.
Independent Connections Provider (ICP) Status
We offer competitive and flexible connection solutions, ensuring compliance with national standards and smooth adoption by the regional DNO.
Your Trusted Partner
Expert Independent Connections Provider (ICP)

Your trusted partner
We offer competitive and flexible connection solutions, ensuring compliance with national standards and smooth adoption by the regional DNO.
Expert Independent Connections Provider (ICP)
Electricity North West Construction & Maintenance Limited (ENWCML) is your trusted partner for all your Independent Connections Provider (ICP) needs in the North West and North East of England and now offer extended services across the whole of the UK.
We offer a comprehensive range of services for cable installation, easements & wayleaves, street works, switchgear, contestable works, grid connections, new connections, increased import capacity, and generation connections.
Key Services

Office hours:
Open – Mon – Fri 7:30 – 17:30
Closed – Saturday, Sunday and Public Holidays
Our registered office:
Borron Street
Portwood
Stockport
Cheshire SK1 2JD
Social profiles
Get in touch!
We’d love to hear from you. Please get in touch and we’ll get back to you as soon as we can.