Bio-Bean have opened a factory in Cambridgeshire to process waste coffee grounds and are busy turning tonnes of it into sustainable fuels. Their latest product is Logs, made from compressed coffee. Founder and chief executive Arthur Kay, who guides Linda Lewis through the process of converting coffee beans into fuel. He also explains how the company has already won a string of awards, including the first prize in Sir Richard Branson's annual VOOM competition.
Linda Lewis meets Simon Gosling, Managing Director of Energy Net, a conference company which has been producing events and investment summits for Africa for nearly 20 years. Simon explains his latest initiative, Off the Grid Club, which aims to connect poor areas of Africa to the electricity grid. Linda also meets the supporters and founder members, taking part in the Off the Grid Club, such as the Solar Turtle Company.
Pavegen are a company who have come up with revolutionary technology that transforms the power of people's footsteps into energy. Linda Lewis meets the CEO Laurence Kemball Cook, who reveals how the company has teamed up with Tribal Planet in Silicon Valley to turn the data from footsteps into a 'digital currency' which people can spend using their mobile phone.
Linda Lewis heads over to Snact this week, a company that makes fruit jerky from surplus fruit. She meets founders Ilana Taub and Michael Minch Dixon, asking them how they set up the company. The pair convey their passion for cutting food waste, their aim to collect unwanted fruit from markets and suppliers, and turn it into something that people would want to buy.
Founded by brothers David and Matthew Farr, Nip Nip Cycling provide a mobile bicycle repair service for large offices in the City. They also do repairs at their Service Hub in Southwark, which is also a training centre for homeless people supported by the St Mungo's charity to learn bike repair skills.