> ## Content Index > Fetch the complete content index at: https://www.peoplesfuture.scot/llms.txt > Use this file to discover other available public pages before exploring further. # 8. Powerhouse Scotland – Bills That Cost What They Cost 🟡 - URL: https://www.peoplesfuture.scot/8-powerhouse-scotland-bills-that-cost-what-they-cost/ - Published: 2026-08-20T09:27:42.000Z - Updated: 2026-08-20T09:27:42.000Z - Description: Scotland exported 21.7 TWh of electricity in 2025 and imported 0.9 TWh. Net exports were 20.8 TWh, with an indicative wholesale value of £1.7 billion. - Author: The Peoples Future Scotland - Tags: The 28 Scotland exported 21.7 TWh of electricity in 2025 and imported 0.9 TWh. Net exports were 20.8 TWh, with an indicative wholesale value of £1.7 billion. Households still pay under a single Great Britain wholesale market, in which gas often sets the marginal price, and under GB network charges set by Ofgem. Water is already a Scottish public monopoly. Electricity generation, transmission, distribution and supply are reserved. Demand-side programmes can cut use. They cannot rewrite the price. --- ## Current reality ### Legal and institutional position Schedule 5, Head D2 of the Scotland Act 1998 reserves the generation, transmission, distribution and supply of electricity, nuclear energy, and the associated licensing and market framework. BETTA, introduced in 2005, is a single GB wholesale market. The National Energy System Operator balances the system. Ofgem regulates networks and the retail price cap. The Connection and Use of System Code sets Transmission Network Use of System charges. Scottish Power Transmission and SSEN Transmission own onshore transmission in Scotland; both are private companies under RIIO-ET3 (2026–31). Distribution follows the same regulated-private model. Devolved or jointly influenced functions are energy efficiency, fuel-poverty strategy and statutory targets, onshore planning and consenting for generating stations above 50 MW, promotion of renewables, housing energy-performance standards, and some social-security support for incomes. Scottish Water is established under the Water Industry (Scotland) Act 2002, regulated economically by the Water Industry Commission for Scotland. That model has no electricity equivalent under current competence. The Fuel Poverty (Targets, Definition and Strategy) (Scotland) Act 2019 defines fuel poverty and sets 2040 targets: no more than 5 per cent of households in fuel poverty and 1 per cent in extreme fuel poverty. Interim 2030 waypoints are tighter still. The Act does not give Holyrood control of wholesale prices. ### The latest official numbers **Generation and trade (Energy Statistics for Scotland, Q4 2025, published 2 April 2026).** Renewable generation in 2025: 38.5 TWh (record; 38.3 TWh in 2024). Installed renewable capacity at end-2025: 17.9 GW. Planning pipeline at 31 December 2025: 1,201 projects, 84.8 GW estimated. Exports 21.7 TWh; imports 0.9 TWh; net exports 20.8 TWh, valued at about £1.7 billion on 2025 average day-ahead contract prices. Electricity consumption in 2024 was 21.7 TWh. Peak demand remains around 5–6 GW; installed renewables already exceed that. **Market and networks.** The July 2025 REMA summer update retained a single GB-wide wholesale price and rejected zonal pricing. Locational signals will be pursued through TNUoS reform, connections reform, and the Strategic Spatial Energy Plan, with TNUoS reform aimed at being in Parliament and, at the latest, by 2029\. RIIO-ET3 began in April 2026\. NESO’s final 2026/27 TNUoS tariffs put total allowed revenue near £7.6 billion, the large majority recovered from demand. Residual demand charges were forecast to rise by a volume-weighted average of about 64 per cent year on year, with some consumer bands much higher, because transmission owners are recovering a larger investment programme. Industry analysis has put extra lifetime TNUoS on existing Scottish generation in the billions relative to charges expected at final investment decision. That is an industry estimate, not an Ofgem official total. Constraint payments arise when the system operator turns down generation that the wires cannot carry and pays for replacement plant, often gas, further south. A large share of GB constraints has historically sat on the Scotland–England boundary and inside Scotland. Those costs feed bills. A precise official 2025 Scottish constraint total is not restated here as a single audited line. **Water (WICS / Scottish Water, 2026–27 charges).** Average household bill: £532 after an 8.67 per cent nominal rise (5.1 per cent real), £42 a year. About 53 per cent of households, around 1.4 million, receive a discount, exemption or reduction. WICS confirmed the scheme is inside the 2021–27 price cap. The bill remains among the lowest of UK water companies. The next regulatory period is under draft determination. **Fuel poverty.** Scottish House Condition Survey 2024: 732,000 households (28.7 per cent) in fuel poverty; 357,000 (14.0 per cent) in extreme fuel poverty. Scenario modelling against the Ofgem cap for April–June 2026: about 680,000 (27 per cent) in fuel poverty; 320,000 (12 per cent) in extreme fuel poverty. Social-rent estimate 47 per cent; private rent 35 per cent; owner-occupiers 18 per cent. These are modelled rates, not the next full SHCS. ### How it is experienced in daily life On a windy night, Scotland can generate several times its demand. The extra power goes south, is stored, is used by flexible load, or is turned down. Households still pay a GB unit rate plus a standing charge that includes transmission residuals, now rising under RIIO-ET3\. Rural and electrically heated homes are more exposed. A warmer-homes measure cuts kWh. It does not change the pence per kWh set in the GB market. Water arrives as a single public bill with a statutory regulator and a discount scheme that already reaches half of households. Electricity does not. ### How it got here BETTA pooled Scotland into a GB price. Gas remained the frequent marginal plant. Renewables grew faster than the wires. TNUoS was designed to send locational signals: generation in export-rich northern zones pays more. Constraint costs rose as build-out outpaced reinforcement. Fuel-poverty statute and efficiency schemes were the Scottish response on the demand side. REMA considered splitting the wholesale market into zones and chose not to. ### What has already been tried, and what that showed Demand-side schemes (Warmer Homes Scotland, Home Energy Scotland, area-based programmes) reduce consumption for participating households. They do not move the wholesale price. Scottish Water shows that a public monopoly with independent economic regulation can keep bills relatively low while investing. It is not transferable to the grid without reserved change. Advocacy on TNUoS and constraints has produced a UK review, not a Scottish tariff. The 10 July 2025 REMA decision is the clearest recent test: even a reform that would have allowed Scottish wholesale prices to fall on surplus days was rejected at UK level. --- ## What needs to happen ### The improvement in measurable terms Bills that more closely track the short-run cost of Scottish surplus generation, and network charges that do not impose a structural northern penalty beyond the cost of the wires actually used. Fuel poverty moving toward the 2030 statutory waypoints (15 per cent / 5 per cent extreme), which current modelled rates miss by a wide margin. Constraint volumes on the Scotland–England boundary falling as reinforcements and flexibility come in. None of these is a single Scottish lever. ### Sequence Cut demand first — that is the lever already held. Then place flexible load (storage, heat, industry, data) next to surplus generation through planning. Then press the reserved processes: TNUoS predictability, constraint reform, SSEP siting. Ownership change for transmission is last, because it is reserved. ### Workforce, capital and standards Transmission build is a UK capital programme under RIIO-ET3\. Heat-pump, insulation and heat-network delivery is a Scottish workforce and supply-chain problem. Drinking-water and sewerage standards are already specified. Electricity “standards” that would matter for this item are charging methodologies and licence conditions written in London. ### What would count as success in twelve months - published outturn of 2026/27 TNUoS residuals against the 64 per cent forecast - a TNUoS reform timetable that is still inside the 2029 backstop, with a worked option for existing Scottish plant - Warmer Homes and related schemes reported as completed measures and bill savings, not only spend - The next SHCS or cap-modelling update showing fuel poverty not rising - SSEP progress against the official end-2026 REMA working date Twelve months will not create a Scottish wholesale zone. The UK has already said it will not. --- ## What can be done under current powers? ### Who holds the lever Scottish Ministers: fuel-poverty programmes, planning, housing standards, consenting, community-benefit frameworks, heat networks. WICS and Scottish Water: the water comparator only. UK Government and Ofgem: wholesale design, licences, TNUoS, the price cap. NESO: balancing and constraints. Transmission owners: the build. ### The statute, budget or direction Scotland Act Schedule 5 D2; Fuel Poverty Act 2019; Water Industry (Scotland) Act 2002; annual Budget lines for energy efficiency; onshore planning statutes. The Electricity Act 1989, Utilities Act, Energy Act provisions, and Ofgem licences are reserved. ### What is already possible and unused Faster, better-targeted fabric and clean-heat programmes. Planning that sites flexible demand in export zones. Public-sector heat and procurement as a sink for surplus. Continued, specific evidence into the TNUoS review rather than a general complaint. Honesty in fuel-poverty reporting that demand-side spend cannot hit a 5 per cent 2040 target if the unit price is set elsewhere. ### What would still be true if management improved tomorrow Gas would still set many GB settlement periods. TNUoS would still be a GB methodology. Scottish Water would still not be the grid. 680,000 modelled fuel-poor households would still face a reserved price cap. Better Scottish delivery can cut kWh. It cannot set p/kWh. --- ## Where the limits are ### Law and reserved powers Wholesale market design, supplier and generator licensing, network charging, interconnector frameworks and ownership of the main transmission and distribution assets are reserved. A Scottish nodal or zonal price, a Scottish TNUoS, or public ownership of SPT and SSEN Transmission require UK legislation or a change in competence. ### Money Efficiency schemes are a Scottish Budget choice. They compete with health and housing. They do not recapture the £1.7 billion indicative value of net exports. Transmission investment is recovered from GB demand under Ofgem. Constraint costs are socialised across GB bills. ### Workforce and capital Installers, heat-network skills and rural delivery constrain the devolved programmes. High-voltage reinforcement is a multi-year capital programme already inside RIIO-ET3. ### Time, geography, UK-wide systems Wires take years. The SSEP and TNUoS reform are timed into the late 2020s. Geography is the reason northern generation pays more under a cost-reflective charge: the surplus is far from English demand. That is physics plus a chosen methodology. ### Political difficulty, kept separate from legal impossibility Zonal pricing was rejected in part because it would have produced different prices in different parts of GB. Arguing for it again is a political choice, not a reserved-power workaround. Public ownership of networks is likewise political at UK level. Neither is available by Holyrood vote. --- ## What is not yet known The official end-2025 constraint-payment total attributed to Scottish assets. The full REMA cost-benefit annex as implemented. Whether SSEP lands at the end of 2026 or slips. Outturn 2026/27 TNUoS versus forecast. The 2025 SHCS fuel-poverty rate when it replaces modelling. How much of the 84.8 GW pipeline will be consented, connected and built. The SR27 water determination’s final bill path. --- ## Honest summary **Achievable now.** Cut household demand. Improve fabric. Site flexible load. Use planning. Run water well. Argue the reserved case with numbers. **Only partly achievable.** A closer link between surplus generation and the Scottish retail bill. Lower northern TNUoS volatility. Fuel-poverty targets that assume a price Scotland does not set. **Would require reserved change.** A distinct wholesale price, a rewritten TNUoS methodology, a change of network ownership, or a transfer of Head D2. **Colour mark: yellow.** The paradox is real: 20.8 TWh net export and a 27 per cent modelled fuel-poverty rate in the same country. The demand-side half is devolved. The price-formation half is not. Yellow is not a claim that efficiency programmes have been exhausted. It is a claim that exhausting them still leaves BETTA and Ofgem in place. **What this item does not settle.** It does not assert that every Scottish household would be cheaper under zonal pricing in every hour. It does not treat the £1.7 billion as cash that could be handed to bill-payers tomorrow. It does not say private networks always fail — RIIO is a regulated return, not an unregulated rent. It does not say Scottish Water is a template that can be copied onto 400 kV lines by ministerial letter. The working test is whether a windy day in Scotland produces a cheaper Scottish unit rate, or only a larger southward flow and a GB constraint cost. Under the law as it stands, the second outcome is the designed one. --- ## Connection Housing and fuel-poverty items share the same demand-side programmes. Industrial and data-centre items are the flexible load that could absorb surplus without a new wholesale design. Public finances set the efficiency budget. Independence Debate sections on energy, natural resources and reserved competence are the live constraint: currency and defence are not what sets the electricity price this winter. --- **People’s Future Scotland**