SP Energy Networks Smart Grid and Network Overhaul
Central and Southern Scotland, Wales, and England (SP Energy Networks license areas) · 2015-2023 (Smart Grid Strategy), 2026-2031 (RIIO-T3 investment plan) · £12bn (RIIO-T3 investment plan), £1.4bn (supply chain contracts) [123, 124, 125]
The judgement call
Account-gated at launchSignificant investment plans (RIIO-T3) to modernize and decarbonize the grid, focusing on unlocking Britain's renewable potential [123, 124, 127]. - Proactive engagement in the ENA Open Networks programme to drive industry-wide standardization and customer experience improvements [129]. - Utilizing advanced data analytics from smart meters and substation monitors to enhance network visibility and control [128].
Key engineering challenges
Increasing grid capacity to accommodate more renewable energy generation and meet net-zero targets [123, 127]. - Strengthening Britain's energy security and reducing constraint costs [123]. - Integrating smart meters and substation monitors for better voltage profile analysis and network management [128]. - Standardizing customer experiences and improving interoperability across different electricity grid operators through the ENA Open Networks programme [129].
Project facts
- Client / owner
- SP Energy Networks (part of ScottishPower, owned by Iberdrola)
- Lead contractor
- SP Energy Networks (with various supply chain partners) [125]
- Lead designers
- —
- Project type
- upgrade; new build
- Scale
- Transmits, distributes, and connects electricity to and from 3.5 million homes and businesses [126].
- Disciplines
- Electrical engineering; power systems engineering; network engineering; data science.
- Standards & frameworks
- Ofgem RIIO framework, ENA Open Networks Programme, relevant UK electricity distribution regulations.
Sources: [123] Enlit. SP Energy Networks kicks off £12bn power network overhaul. https://www.enlit.world/library/sp-energy-networks-kicks-off-12bn-power-network-overhaul (Accessed: 2026-06-10). [124] SP Energy Networks. Kicking off our RIIO-T3 £12 billion investment plan. https://www.spenergynetworks.co.uk/news/pages/kicking_off_our_riiot3_%C2%A312_billion_investment_plan.aspx (Accessed: 2026-06-10). [125] Iberdrola. SP Energy Networks launches £1.4bn investment to support the UK Government’s Clean Power 2030 mission. https://www.iberdrola.com/press-room/news/detail/sp-energy-networks-aunches-investment-support-uk-governments-clean-Power-2030-mission (Accessed: 2026-06-10). [126] SP Energy Networks. SP Energy Networks. https://uk.linkedin.com/company/spenergynetworks (Accessed: 2026-06-10). [127] SP Energy Networks. Video Library. https://www.spenergynetworks.co.uk/pages/video_library.aspx?v=383 (Accessed: 2026-06-10). [128] ENA. Distribution. https://smarter.energynetworks.org/media/5etagni4/scottish-power-energy-networks-distributions-annual-nia-summary-2020-21.pdf (Accessed: 2026-06-10). [129] SP Energy Networks. ENA Open Networks Programme. https://www.spenergynetworks.co.uk/pages/transition_to_a_distribution_system_operator.aspx (Accessed: 2026-06-10).