Since 2000, Silvia has been running a small shop in Guadalajara, Mexico. For the majority of the time since then, she’s had to rely on the same refrigerators to keep her products cool. When microfinance company EcoMicro came along, she found it hard to believe that it could reduce her energy bills by 50%. But the installation of solar-heated appliances and energy-efficient fridges achieved just that. As well as proving environmentally sound, EcoMicro’s microfinance scheme won the Momentum for Change award at the 2014 United Nations Framework Convention on Climate Change (UNFCCC).