Energy & Utilities Energy and utilities

Grid Connection Agreement

All electricity generators connecting to the GB electricity network require a connection agreement with either NESO (National Energy System Operator) (transmission) or a Distribution Network Operator (DNO).

UK-wide
Guide summary

You must get a connection agreement to generate electricity in the UK. For large projects (usually over 50MW), apply to National Grid ESO. For smaller projects, apply to your local Distribution Network Operator (DNO).

  • Check if you need a transmission (>50MW) or distribution connection
  • For transmission, apply during open application windows
  • Prepare planning and land rights evidence for Gate 2
  • For distribution, apply directly to your local DNO
  • Allow 12-36+ months for connection
  • Consider battery storage to manage grid constraints
  • New rules start in January 2025 (First Ready, First Connected)
  • Over 700GW of projects are waiting for connection
  • Failure to meet milestones can lead to termination
  • Application fees and connection charges apply
On this page
UK-wide

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Connection queue crisis

The transmission connections queue exceeds 700GW of projects - over four times the installed capacity needed by 2050. Major reforms are underway to address this backlog.

Connections reform: TM04+

From January 2025, new transmission connection applications follow the 'First Ready, First Connected' (TM04+) process with two gates:

  • Gate 1: Initial application with indicative connection date
  • Gate 2: Firm offer requiring proof of planning progress and land rights

Milestones and termination

Projects must meet milestones (planning submission, land agreements) within designated timeframes. Failure to meet milestones can result in offer termination with cancellation charges.

Distribution connections

Smaller generators connect via DNOs. For projects impacting transmission, DNOs submit applications to NESO on behalf of customers.

  1. 1

    Identify connection type

    Identify whether you need transmission (>50MW typically) or distribution connection

  2. 2

    Submit transmission application

    For transmission, submit application during open application windows

  3. 3

    Prepare Gate 2 evidence

    Prepare evidence of planning progress and land rights for Gate 2

  4. 4

    Apply to DNO

    For distribution, apply directly to your local DNO

  5. 5

    Allow connection time

    Allow 12-36+ months for connection depending on required reinforcement

  6. 6

    Consider battery storage

    Consider battery storage to manage grid constraints

NESO (National Energy System Operator) connections (opens in a new tab)