Christina Liebner has pursued her passion for energy efficient buildings at Integral Group since 2006. Her main focus is improving the performance and reducing the footprint of existing buildings with retrocommissioning, energy audits, and retrofits. She also works on new design projects targeting LEED Platinum, Living Building, and Net Zero Energy certification. Christina has worked in Mali, Thailand, and South Korea. She graduated with a masters of science in mechanical engineering and a bachelors of science in civil engineering from Stanford University. Her favorite sustainable buildings books are More Other Homes and Garbage and Sun, Wind, and Light.