Case Study

Riding Sunbeams - The solar powered railway

Riding Sunbeams - The solar powered railway
Published: 21 December 2020 Client name: Riding Sunbeams Service provided: Technical Consultancy

A cleaner fuel source fed directly into rail operations

Riding Sunbeams is a unique project we are supporting that explores the potential for solar power as an alternative energy source for the rail sector.

During the summer of 2019, a test unit of around 100 solar panels was installed next to the trackside near Aldershot, Hampshire - the first time in the world that renewable zero-carbon electricity had been directly supplied to an adjacent rail line.

The 30kWp solar test unit connects to an ancillary transformer on the traction system of Network Rail's Wessex Route , with the energy captured from the panel array used to power signalling and lights.


Although it could be said that railways already make use of solar power - it is a contributor to the UK's grid - this is the first time solar panels have been directly connected to the railway.

The project aims to show that lineside solar electricity could prove cheaper than energy from the grid and could provide as much as 10% of the southern region's power needs in the UK.

Riding Sunbeams is formed of a consortium that includes Turbo Power Systems, Ricardo, Network Rail, Angel Trains and the Birmingham Centre for Railway Research and Education.

This project opens up opportunities to utilise renewable energy technologies in ways not previously possible.








Ricardo teams provided their expertise in power generation research and their experience of connecting renewable energy technologies to existing infrastructure.

According to Ricardo's Colin McNaught, who has been advising the trial programme, the project is a unique opportunity to tap into an underused zero-carbon option:

"This project opens up opportunities to utilise renewable energy technologies in ways not previously possible. It has the potential to provide significant opportunities in enabling rail infrastructure operators and governments to deliver the environmental changes needed for a 'net zero' future."

In summer 2020, following a successful first year in operation, the Riding Sunbeams project secured a further £2.5 million of funding from the UK's Getting Building Fund and its First of a Kind 2020 programme.

On track for carbon-free rail?

On track for carbon-free rail?

Ricardo's experts discuss how the rail industry is developing smarter approaches to reduce carbon emissions. Read more

Request more information

Please tick the boxes below if you give consent for Ricardo to contact you with additional information on our services, products or events. Your information will be stored on our secure systems, will not be shared with 3rd parties, click here for Ricardo’s privacy notice.