SSE Enterprise Rail has secured a five-year building and civils framework from Network Rail.
The rail contractor said that the work – to be delivered between 2019-2024 – could be worth more than £200 million across a number of regions.
The framework consists of mechanical and electrical engineering services, building services and fabric works on Network Rail infrastructure assets in the South of England and Wales.
Works in the Wales region covers the North and South routes, where SSE will use its new Taff Wells offices as its headquarters.
Western region works comprise of both the West Country and Thames Valley routes.
The business was also successful with bids for the Wessex route and London North West, where it will complete works on both the North and South routes.
Operations director Tom Smith said: “We look forward to working with Network Rail over the coming months and years as we continue to demonstrate our ability to deliver projects safely and to a high standard. Our commercial team, under the leadership of Colin Robertson, put together a fantastic bid and we are delighted to have been awarded such a significant contract so early on in the CP6 process.”
Managing director Raj Sinha added: “With other strong opportunities on the horizon, we are working collaboratively to identify and deliver value-adding solutions through initiatives such as asset/project funding, asset ownership and alliances with Network Rail and other organisations including HS2 and Transport for London.
“We believe we have something truly unique to offer the industry and this contract award, we anticipate, will be the first of many significant initiatives we will be actively involved with over the next five years and beyond.”