GridteamAI

Quarterly Sector Report

Volume Gap 42 · closes Water

Water Utilities · Devolved · Scotland + NI

by GridteamAI

UK · Scottish Water · NI Water · WICS · UR Scotland & N. Ireland · Q2 2031

Outside the
Framework.

The two devolved water sectors that sit outside PR24 and WRMP24 — Scottish Water and NI Water, their separate regulators, ownership models and the Lanarkshire AIGZ pressure.

gridteamai.com · book@gridteamai.com v2.1 · Q2 2031 Water · Volume 8 · closes Water

UK Devolved Water — Scottish Water + NI Water · Executive summary05

00 · Executive Summary A two-page brief

Two devolved sectors, outside the England-and-Wales framework.

Scottish Water is a public corporation owned by the Scottish Government, regulated by WICS (economic), SEPA (environmental) and the DWQR — on a six-year Strategic Review of Charges cycle (SRC21, SRC27 in development), longer than Ofwat’s five.

NI Water is a government-owned company reporting to the Department for Infrastructure, regulated by the Utility Regulator (a multi-utility economic regulator), NIEA and DWI NI on a PC cycle. Domestic charges have been suspended since 2007; a government grant covers domestic supply — a materially different funding model.

Both have material supply-demand headroom — high rainfall, lower population density, substantial reservoir storage — and lower drought sensitivity than English regions. The Lanarkshire AIGZ (Gap 18) concentrates Scotland-specific industrial demand; NI has no AIGZ as of WRMP24. Devolved policy may diverge — Scotland targets Net Zero by 2045, five years ahead of the UK.

The Q2 2031 picture

GridteamAI base case: Scottish Water delivers SRC21 and develops SRC27, with Lanarkshire AIGZ demand the key new pressure; NI Water delivers PC21 and develops PC27 within its grant-funded model; devolved policy diverges gradually from England and Wales; and cross-UK coordination stays informational, with NI political stability the key continuity risk.

The shape of this volume. Section 1 sets out the headline figures. Section 2 develops twelve findings, each confidence-annotated. A chapter-weight pull at p. 14 anchors the argument. Section 3 covers Scottish Water — ownership, regulation and supply-demand. Section 4 covers NI Water. Section 5 covers cross-UK coordination, divergence risks and the outlook. Section 6 makes recommendations, with a one-page tear-out at p. 25.

Executive summary · ends1 · The headline figures · p. 07

1 · The headline figures09

Figure 1 · The three devolved frameworksOfwat · WICS · UR

Three jurisdictions, three frameworks, one climate.

England and Wales (privatised undertakers under Ofwat, PR24, the £104 bn envelope), Scotland (the public corporation Scottish Water under WICS, SEPA and the SRC cycle), and Northern Ireland (the government-owned NI Water under the Utility Regulator, NIEA and the PC cycle) — different ownership, different regulators, common pressures.

Three-column comparison of UK water regulatory frameworks. England and Wales (cool-neutral): privatised water-and-sewerage undertakers, eleven W+S plus four water-only, privatised 1989; regulators Ofwat, EA/NRW, DWI, CCW and Defra; price control PR24 with the £104 bn envelope; framework features WRMP24, RAPID SROs, £88 bn Storm Overflows, the Bioresources market and the 1-in-500 resilience standard. Scotland (teal, the focal jurisdiction): Scottish Water, a public corporation owned by the Scottish Government; regulators WICS, SEPA, DWQR, Consumer Scotland and the Scottish Government; price control SRC21 with SRC27 in development; features Water Resources Scotland, the Hydro Nation strategy, Net Zero 2045, the Lanarkshire AIGZ and Coire Glas plus Earba. Northern Ireland (ink-outlined): NI Water, a government-owned company with DfI as shareholder; regulators the Utility Regulator, NIEA/DAERA, DWI NI and Consumer Council NI; price control PC21 with PC27 in development; features domestic charges suspended, a government grant funding model, cross-border Ireland coordination, the NI Climate Change Act 2022 and no AIGZ as of WRMP24.

Fig. 1 / Section 1

Scotland (teal) is the focal jurisdiction; NI is ink-outlined. Three frameworks, one shared climate.

Quarterly Sector Report · Gap 422 · Twelve findings · p. 10

2 · Twelve findings on the devolved sectors10

2 · Twelve findings on the devolved sectorsQ2 2031

Twelve findings. Each carries a confidence level.

HIGH — verified against WICS, the Utility Regulator NI, SEPA/NIEA, Scottish Water or NI Water reporting. MEDIUM — named Scottish Government or NI Executive policy cross-referenced to a primary source. LOW — GridteamAI scenario projection, marked as such.

Findings 01 – 12 · summary

01Scotland and Northern Ireland sit entirely outside the PR24 and WRMP24 framework.
02Scottish Water is a public corporation owned by the Scottish Government.
03NI Water is a government-owned company funded partly by government grant.
04Scotland regulates on a 6-year price-control cycle; NI on the PC cycle.
05Both have material supply-demand headroom and lower drought sensitivity.
06The Lanarkshire AIGZ is the only AIGZ in Scotland; NI has none.
07NI domestic water charges have been suspended since 2007.
08Scotland targets Net Zero by 2045 — five years ahead of the UK.
09Coire Glas and Earba pumped hydro sit in Scottish Water catchment context.
10NI Water coordinates cross-border with the Irish water sector.
11Devolved policy divergence is the key UK-wide-analysis risk.
12Implications for the devolved companies, regulators and UK coordination.

Findings 01 – 09 follow in detail · pp. 10 – 12 · 10 – 12 summarised on the matrix

Quarterly Sector Report · Gap 422

112 · Findings 01 – 03

2 · Findings 01 — 03The framework · the standard · the Plan

Finding 01 · HIGH

Scotland and Northern Ireland sit entirely outside the PR24 and WRMP24 framework.

The eight-volume Water beachhead covers, in Gaps 35–41, the eleven English and Welsh water-and-sewerage undertakers and four water-only companies under Ofwat, Defra, the EA and the DWI. Scotland and Northern Ireland operate entirely separate regulatory and commercial frameworks. PR24, WRMP24, the RAPID SRO process, the £88 bn Storm Overflows programme and the Bioresources market are all England-and-Wales instruments; none applies in Scotland or NI. Both devolved sectors face the same climate, environmental and customer pressures, but under different ownership, regulators and funding — which is why a UK-wide water-sector view is incomplete without them.

Finding 02 · HIGH

Scottish Water is a public corporation owned by the Scottish Government.

Scottish Water is a public corporation: the Scottish Government is sole shareholder, the Board is appointed by Scottish Ministers, and policy is set by the relevant Cabinet Secretary. This differs materially from the English and Welsh model, where the undertakers were privatised in 1989 — Scotland retained public ownership. Economic regulation is by the Water Industry Commission for Scotland (WICS) on a six-year Strategic Review of Charges cycle (SRC21, 2021–2027; SRC27 in development), longer than Ofwat’s five; SEPA regulates the environment, the DWQR drinking-water quality, and Consumer Scotland represents customers. WICS methodology draws on Ofwat but is adapted for the Scottish public-ownership context.

Finding 03 · HIGH

NI Water is a government-owned company funded partly by government grant.

NI Water is a government-owned company (GoCo): the Department for Infrastructure is sole shareholder, and the NI Executive Minister for Infrastructure sets policy. This differs from both the English privatised model and the Scottish public-corporation model — NI Water is a discrete company under government ownership. Economic regulation is by the Utility Regulator (UR), a single multi-utility regulator covering electricity, gas and water, on the PC15/PC21/PC27 cycle; NIEA (within DAERA) regulates the environment, DWI NI drinking water, and the Consumer Council NI represents customers. Crucially, domestic water charges have been suspended since 2007, with a government grant covering domestic supply alongside non-domestic and industrial customer revenue.

2 · 01 – 03Findings 04 – 06 · facing

Purchase access

Outside theFramework.