The city of Vaasa in western Finland has built a reputation as a centre of innovation, where energy companies are working together to try to find solutions to some of the world’s biggest problems. Here, there’s a quiet conviction that climate change can be stopped and a belief that technology emerging from this area will help us make the shift to renewable forms of energy. We meet the people behind a giant engine that can run on a variety of non-fossil fuels, hear about a portable plant that turns waste into energy and speak to scientists developing man-made fuels to replace oil and gas. We also check out a company creating a new type of battery which it hopes will one day be able to store enough power to meet the needs of a whole city. Reporter and producer: Erika Benke (Photo credit: BBC)