Private Wire Connections: What They Are and When They Make Sense

Energy Broker
2 April 2026

As energy costs rise and businesses are looking for greater control over your  energy supply, private wire connections are becoming an increasingly attractive option.

 

A private wire allows electricity to be supplied directly from a generator to a business site, without passing through the public electricity network. For organisations with high energy demand, renewable generation projects or long-term sustainability goals, private wire connections can offer:

 

  • Reduced energy costs

  • Improved price certainty

  • Lower exposure to network charges

  • Enhanced energy resilience

     

 

Understanding how private wire works and when it is viable is key to assessing whether it fits within your energy strategy.

What Is a Private Wire Connection?

A private wire connection is a direct physical link between an electricity generator and a consumer, bypassing the public distribution network. This means electricity is:

 

  • Generated locally (e.g. solar, wind, CHP)

  • Delivered directly to the site via dedicated infrastructure

  • Not subject to many of the standard network charges

  • Industrial and manufacturing sites

  • Commercial developments

  • Data centres

  • Renewable energy projects

How Private Wire Works

In a typical private wire setup:

 

  1. A generator produces electricity (onsite or nearby)

  2. A dedicated cable connects the generator to the end user

  3. Electricity flows directly to the site without using the public grid


In some cases, the site may still maintain a grid connection for:

 

  • Backup supply
  • Additional demand
  • Export of excess energy

 

This creates a hybrid energy model combining private supply with grid flexibility.

Why Businesses Are Considering Private Wire

Private wire is gaining attention due to several key drivers.

Rising Energy Costs
Avoiding certain network and non-commodity charges can reduce overall energy costs.
Net Zero & Sustainability Goals
Private wire enables direct use of renewable energy, supporting carbon reduction and ESG commitments.
Energy Price Certainty
Long-term agreements with generators can provide stable and predictable pricing.
Grid Capacity Constraints
In areas where grid capacity is limited, private wire can offer an alternative route to securing energy supply.

Key Benefits of Private Wire Connections

Reduced Network Charges
By bypassing the public network, some transmission and distribution costs can be avoided.
Long-Term Cost Control
Private agreements can offer stable pricing over extended periods.
Direct Renewable Supply
Electricity can be sourced directly from renewable generation, improving sustainability credentials.
Improved Energy Resilience & Flexibility
Local supply reduces reliance on the wider grid, whilst private wire can be combined with grid supply, battery storage or demand response strategies.

Challenges and Considerations

While private wire offers clear benefits, it is not suitable for every project.

Infrastructure Costs
Installing dedicated infrastructure can require significant upfront investment.
Distance Between Generation and Demand
Private wire is most viable when the generator is close to the consumption site.
Regulatory & Commercial Complexity
Contracts, ownership structures and regulatory considerations can be complex.
Grid Capacity Constraints
In areas where grid capacity is limited, private wire can offer an alternative route to securing energy supply.

Private Wire vs Power Purchase Agreements (PPA)

Private wire is often compared with corporate PPAs. Both models can play a role in renewable energy strategy, depending on site location and business objectives.

Private Wire

  • Physical connection

  • Direct energy supply

  • Reduced network charges

PPA (Sleeved or Virtual)
  • Financial agreement
  • Energy supplied via the grid
  • Still subject to network charges

When Does Private Wire Make Sense?

Private wire is typically suitable where:

 

  • There is high and consistent energy demand

  • A renewable generator is located nearby

  • Long-term cost control is a priority

  • Grid capacity is constrained

  • Sustainability targets require direct renewable sourcing

     

 

Each project requires a detailed feasibility assessment.

Frequently Asked Questions
Grid capacity and reinforcement are critical, often bottlenecked, components in the development of new energy projects. As the energy system shifts from centralized, fossil-fuel-based generation to decentralized, intermittent renewable sources, the existing electrical infrastructure is facing severe strain, leading to long queues and delays for new projects.
What is grid capacity?

Grid capacity is the maximum amount of electricity the network can deliver safely without requiring upgrades.

What is network reinforcement?
Network reinforcement involves upgrading infrastructure to increase capacity and support additional demand or generation.
Why is there limited grid capacity?
Increasing demand from electrification, renewable energy and industrial growth is putting pressure on existing network infrastructure.
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