Cassie is the Managing Director for the Climate Solutions and Networks team, leading the development and delivery of sector programmes and support to cities in energy and buildings, food and waste, transport, urban planning, air quality, and climate resilience. Cassie started at C40 as the Director for Energy and Buildings, supporting cities to reduce energy consumed by existing buildings, ensure new buildings are efficient from the start, and clean up the energy supply to buildings and beyond. Prior to joining C40, Cassie was at the Greater London Authority (GLA) where she was the project manager for the London Environment Strategy; launched in 2018, it is a world-leading strategy for environment ambition at the city level. She was also leading the climate adaptation and sustainable development team, working to manage London’s climate risks and impacts and improve quality of life.