Delivering a safe and reliable network today, enabling the future energy system of tomorrow
SGN has today published its Annual Report and Financial Statements for the year ending 31 March 2025, showcasing a year of strong operational performance, record investment in the gas network, and continued progress towards a net zero future.
The report highlights SGN's role in maintaining a resilient and reliable network which is a key part of the UK’s critical national infrastructure, delivering safe and secure energy to over six million homes and businesses across Scotland, southern England and Northern Ireland.
In 2024/25, the company invested a record £620.4 million in its network – up 26% from the previous year – including £431.2 million to replace over 1,000km of ageing iron mains with modern polyethylene pipes. This investment ensures the long-term safety and reliability of the network while supporting the UK’s energy transition.
SGN's Chief Executive Officer Simon Kilonback said: “Our network has a fundamental role to play in supporting the UK’s energy transition, today and tomorrow. We keep millions of households and businesses safe and warm while also providing resilience to the wider energy system. Our modern infrastructure has benefitted from continuous investment over decades and is already carrying green gases which are helping communities and businesses to decarbonise.”
The report also confirms SGN’s continued industry-leading customer service, with its Scotland network topping the customer satisfaction league table for the ninth consecutive year. Across both networks, SGN achieved an average customer satisfaction score of 9.37 out of 10.
Operationally, SGN responded to 181,764 gas escapes, exceeding Ofgem’s 97% emergency response standard in both its Scotland and Southern networks. Network reliability remained at 99.99%, and the company supported over 363,000 vulnerable households through its Safe and Warm programme.
SGN’s Regulatory Asset Value (RAV) rose to £7.68 billion, reflecting the scale of investment and the company’s commitment to long-term infrastructure resilience. It also shared highlights of the RIIO-GD3 Business Plan we submitted to Ofgem, which sets out a £4.5 billion investment programme for 2026–2031 focused on keeping everyone safe, providing a high-quality service, delivering value for money, and decarbonisation.
Our Chair Rebecca Lumlock added: “With an enhanced leadership team and a business plan focused on operational excellence, I’m confident SGN will continue to deliver for all our customers and stakeholders.”
You can read the full annual report here.