services

Design Assurance

Specialist Design Capacity for ICPs.

Groundline provides specialist engineering design services to Independent Connection Providers (ICPs) operating across the UK's regulated electricity networks. We understand the ICP environment, the commercial pace, the G81 and DNO/IDNO standards obligations, the network owner interfaces, and what's at stake when pipelines grow faster than internal capacity. Our teams design overhead line and underground cable connections that are technically robust, G81-compliant, and built to be accepted first time by UKPN, NGED, SSEN, and ENWL, across all voltage levels relevant to ICP work, from LV and 11kV through to 33kV and sub-transmission. Whether you need a single design or ongoing overflow support when internal teams hit their limit, we plug in as a seamless extension of your team, without the cost, time, or risk of hiring.

What We Do

G81‑Compliant Network Design (LV–33kV)

Deliver approval‑ready G81 designs that pass first time — including:

  • LV, 11kV, 22kV, 33kV network layouts

  • Cable sizing, routes, jointing & substations

  • DNO‑specific deviations (UKPN, NGED, SSEN, ENWL)
DNO / IDNO Design Submissions and Comment Resolution

Manage the entire approval interface, not just drawings:

  • Submissions to DNOs / IDNOs

  • Technical responses & iterations

  • Escalation where approvals stall

  • Full Construction Packs

  • Legal inbox between IDNO/DNO and Landowner
Feasibility & Point of Connection (POC) Support

Early‑stage studies to de‑risk projects before commitment:

  • Capacity & route feasibility

  • Network strategy options

  • Programme & cost implications
HV / Specialist Electrical Studies

Targeted support on complex schemes:

  • Load flow & fault level studies

  • ≥33kV - Major Projects

  • Protection coordination

  • Earthing design

  • EV, data centre & high‑load scenarios
As‑Built (Laid) Drawings and Adoption Packs

We clear the backlog that stops projects closing:

  • Red‑line to as‑built conversion
  • Asset schedules & adoption packs

  • IDNO handover submissions

value proposition

On-Demand Design Capacity, Delivered the Right Way

We bring design capability across the full ICP delivery chain — from LV through 33kV, G81-compliant submissions to DNO/IDNO comment resolution, feasibility and Point of Connection studies through to as-built adoption packs. Every job runs through the same controlled, repeatable workflow: scope locked up front, design developed against an agreed brief, and an independent assurance review checking compliance, constructability, and DNO/IDNO acceptance before anything goes out the door. No matter how stretched your pipeline gets, the process stays the same, and so does the quality.

The Result: Predictable, Reliable, Defensible Outcomes
  • Faster Energisation: Locked scopes and gated reviews keep design moving on schedule, so projects reach energisation without late-stage surprises.

  • First-Time DNO/IDNO Acceptance: Independent assurance review checks compliance and constructability before submission, cutting down on rework and resubmission cycles.

  • Capacity Without the Overhead: Scale design support up or down as your pipeline shifts, without the cost, time, or risk of hiring.

  • Controlled, Bounded Iteration: A single comment log and an agreed revision allowance keep feedback focused and timelines protected.

  • Confidence in Delivery: Every job moves through the same governed process, end to end, so quality holds whether you need one design or ten.

Let's Get to Work.

Discuss your needs with one of our experts.

Ben Liebing

Business Development Manager

Ross Quiney

Business Development Manager

Luke Brown

General Manager – Overhead Line Engineering