Building heating, cooling and lighting currently account for 27% of global CO2 emissions. To tackle this it is pivotal to have stringent energy standards for new buildings, from construction design to materials used and appliances chosen. However, most residential buildings were built before thermal standards were introduced. In the EU half of the buildings are pre-1970, when the first thermal regulations came into place2. Energy retrofit and solutions based on SaaS and IoT to improve heating, cooling and light management play a huge role in reducing emissions while maintaining comfort and providing insights to consumers and businesses to reduce their consumption.