The company helps users reduce their energy consumption, cutting down on both cost and carbon footprint.

In just four years the company has become a leading energy service provider with a staff of 210, and also helps suppliers redesign their systems to become more efficient.

See more of our 101 tech start-up disrupters here.

And check out our 101 rising stars of tech - the exciting firms which did not make the main list but have the potential to grow.