Big Six company npower has bought an energy management firm in a multi-million pound deal.

Remote Utility Monitoring & Management (RUMM) uses the latest innovations in cloud-based software to help businesses monitor and control their energy in real time and reduce costs.

The Welsh technology firm, which was founded in 2005 as a spin-out of the University of South Wales, claims to have saved customers more than £43 million.

RWE npower said it will roll out the service to its business customers as part of their existing support package, starting with some of the biggest energy users.

It hopes to help save a total of £4 billion a year.

Paul Massara, CEO of RWE npower said: “RUMM’s technology is truly innovative, giving businesses the tools they need to make significant savings on the bottom line.

“This deal represents an important investment in both our energy solutions business and the thriving South Wales tech community. With the right support and incentives, we are confident that Welsh start-ups, like RUMM, will continue to grow, exporting their expertise across the world.”