Published in 2023 by Holm, G and others affiliated with State of Green, this article contextualizes the trajectory of energy efficiency policies and regulations in Denmark spanning the last five decades. Emphasizing that about 85% of the buildings anticipated for occupancy by 2050 are already standing today, the article contends that devising energy-efficient strategies for existing structures holds paramount importance. It elaborates on the benefits, challenges, lessons learned, and motivating factors driving Denmark’s green transition in alignment with Net Zero commitments. The narrative showcases a myriad of energy-efficient case studies and pioneering solutions implemented by Danish corporations globally, serving as exemplars of this approach.

Keywords: Clean Tech, Climate Change, Energy Efficiency/Management, HVAC & Indoor Air Quality (IAQ), Renewable Energy, Window Controls/Covers, Zero Net Energy