NESO Interconnection Queue Holds 610 GW in Great Britain (UK)

CORRECTION (2026-10-02): An earlier version of this release described NESO's 610 GW queue as "35% of all US queued load". NESO is Great Britain's electricity system operator, not a US grid operator, so the queue is not a share of US load and that line is withdrawn. NESO's figure is its TEC Register connections queue, which counts generation and demand projects together, so it is not a load total either. Current NESO figures: https://dchub.cloud/api/v1/interconnection-queue/snapshot

## NESO Queue Depth Flags Long Energization Timeline

NESO's interconnection queue now holds **610 GW of requested load** — signaling a multi-year time-to-power for new large loads seeking interconnection in the UK grid operator's territory.

## What It Means for Site Selection

New hyperscale projects targeting NESO markets face a **quantifiable delay risk** that must be priced into capex models and phased build timelines. A queue of this scale — more than three times the current UK peak demand — means:

- **Interconnection studies stretch beyond 24 months** for projects requesting >50 MW.
- **Grid reinforcement costs** are increasingly shifted to the customer, adding £20-40M per 100 MW in some corridors.
- **Land optioned today may not energize until 2028-2029** for projects not already in flight.

The second-order read: **ISO queue depth is now a forward indicator of market saturation**, not just backlog. Markets with queues exceeding 3× peak load — NESO, PJM West, CAISO — are signaling that incremental capacity additions face structural, not cyclical, delays. Investors and developers should model queue position as a **hard constraint on IRR timelines**, not a soft variable.

## Methodology

DC Hub tracks interconnection queues across 7 ISOs and 300+ global markets, updated daily. NESO data pulled from the Transmission Entry Capacity (TEC) Register.

**Source:** DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily.

**Press inquiries:** [email protected] · DC Hub MCP API: https://dchub.cloud/mcp

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*Editor's note: Corrected 2026-08-08: an earlier version wrongly scaled NESO's Great Britain interconnection backlog against a nationwide American total. NESO is the GB system operator; the figures are GB-only. Great Britain scoping restored.*