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Accredited Expertise for Safe, Compliant Grid Connections

TSG Power delivers Independent Connection Provider (ICP) services through its wholly owned subsidiaries, TSG Power UK and TSG Powertek, both of which hold NERS accreditation. This accreditation enables them to deliver contestable works for businesses seeking new or upgraded electricity connections, working in coordination with Distribution Network Operators (DNOs).

For customers, NERS accreditation provides confidence that their project is being delivered by a company that has been independently assessed for technical competence, safety, quality and compliance.

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What is NERS?

The National Electricity Registration Scheme (NERS) is the industry accreditation scheme that assesses and certifies companies responsible for designing, managing and delivering electricity network connections.

Administered by Lloyd’s Register Quality Assurance (LRQA) on behalf of the UK’s DNOs, the scheme was introduced to promote competition in the electrical connections market while ensuring all accredited providers meet consistent standards of quality and safety.

Only companies that successfully complete the assessment process can become NERS-accredited providers and operate as ICPs.

NERS accreditation is recognised throughout the UK electrical industry and is considered the benchmark for organisations carrying out contestable electricity connection works. For businesses seeking a NERS-accredited provider, it offers confidence that electrical infrastructure projects will be delivered by organisations that meet the exacting standards required by DNOs.

UK standard overhead power line transmission tower at sunset

Why is NERS Important?

Electricity infrastructure forms part of the UK’s critical national network, placing significant responsibility on the organisations entrusted with designing, managing and delivering new connections. NERS accreditation demonstrates that a provider has the systems, expertise and operational controls needed to undertake this work to the standards expected by DNOs.

For customers, this means:

  • Confidence in the provider’s competence
  • Compliance with industry regulations
  • Assurance that work meets DNO requirements
  • Greater project transparency
  • Reduced delivery risk
  • High standards of safety and quality

Without NERS accreditation, companies cannot undertake ICP works on the electricity distribution network.

What is an Independent Connection Provider (ICP)?

An ICP is a NERS-accredited company authorised to undertake contestable activities associated with new and upgraded electricity supplies. Working alongside DNOs and IDNO’s, ICPs provide businesses with an alternative, competitive route to securing the power infrastructure needed for new developments, expansion projects, electric vehicle (EV) charging installations, renewable energy developments and increased site capacity.

This allows customers to benefit from:

  • Greater flexibility
  • Faster project delivery
  • Competitive pricing
  • End-to-end project management
  • A wider choice of providers

As NERS-accredited ICP providers, TSG Power UK and TSG Powertek deliver projects ranging from high-power EV charging hubs and commercial developments to large-scale solar installations, battery storage systems and high-voltage grid connections.

What Does NERS Accreditation Cover?

NERS accreditation is awarded against specific scopes of work. Accredited companies may only undertake activities for which they have been assessed and approved.

Depending on the scope, a NERS-accredited company may be authorised to carry out:

  • Electrical network design
  • Project management
  • Civil engineering works
  • Cable laying and jointing
  • Substation installation
  • Switchgear installation
  • Transformer installation
  • Testing and commissioning

This structured approach ensures that every provider operates strictly within its approved area of competence.

The NERS Accreditation Process

Achieving NERS accreditation is a rigorous process that requires organisations to demonstrate their ability to design, manage and deliver electrical connection projects while meeting extensive technical, quality and safety requirements.

Independent assessments examine areas including:

  • Technical competence
  • Staff qualifications and training
  • Safety management systems
  • Quality procedures
  • Operational processes
  • Audit and compliance controls
  • Project delivery capability

NERS-accredited personnel are also issued NERS passports, which record training, competency assessments and work history.

This ongoing assessment process helps maintain the high standards expected across the electricity connections sector.

Contestable and Non-Contestable Works: When a new electricity connection is required, the work is divided into two categories.

Contestable Works

A NERS-accredited ICP can perform these activities, which may include:

  • Network design
  • Cable installation
  • Civil works
  • Substation construction
  • Electrical infrastructure installation

Non-Contestable Works

These activities remain the responsibility of the host DNO and typically include:

  • Final connection into the existing network
  • Certain reinforcement works
  • Live network operations
  • Specific high-voltage network activities

By appointing an accredited ICP to undertake the contestable works, businesses can benefit from greater flexibility, improved project efficiencies and enhanced programme control whilst maintaining full compliance with DNO requirements.

NERS Accreditation for Modern Energy Infrastructure

As businesses electrify their operations and invest in sustainable technologies, securing sufficient electrical capacity and reliable grid connections has become increasingly important. NERS-accredited providers play a critical role in delivering the infrastructure needed to support:

  • High-power EV charging hubs
  • Commercial and industrial solar installations
  • Battery Energy Storage Systems (BESS)
  • Distribution centres and logistics hubs
  • Manufacturing facilities
  • Data centres
  • New commercial developments

Whether increasing available electrical capacity, securing a new grid connection or supporting a large-scale renewable energy project, working with a NERS-accredited ICP helps ensure projects are delivered safely, efficiently and in full compliance with industry requirements.

Why Choose TSG Power?

TSG Power provides comprehensive ICP services through its wholly owned subsidiaries, TSG Power UK and TSG Powertek.

Our experienced teams manage every stage of the connection process, from initial design and DNO applications through to civil works, installation, testing and energisation.

Our capabilities include:

  • Low-voltage and high-voltage connections
  • Grid connection applications
  • Electrical network design
  • Civil engineering works
  • Cable laying and jointing
  • Substation installation
  • Transformer and switchgear installation
  • Testing and commissioning
  • Project management and stakeholder liaison

This integrated approach reduces delays, improves communication and provides complete visibility throughout the project lifecycle.

Supporting the UK’s Energy Transition

As electricity demand continues to grow, grid connections are becoming an increasingly important part of business planning.

The transition towards electric vehicle charging, renewable energy generation and battery storage is creating unprecedented demand for new and upgraded grid infrastructure. For many organisations, securing sufficient power is now critical to project viability and future growth.

Through the NERS-accredited capabilities of TSG Power UK and TSG Powertek, TSG Power helps organisations navigate this complex landscape, delivering safe, compliant and future-ready grid connections that support EV charging infrastructure, renewable energy projects and long-term operational success.

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