Net Zero in a Nutshell: Energy Efficiency and Reducing Emissions by 2050

What is the role of energy efficiency and retrofits in existing buildings? This presentation explores the critical role they play, and highlights the most significant contributors to carbon reduction.

Energy efficiency is highlighted as the most significant contributor to carbon reduction, with potential savings of 50-80%. Equipment upgrades and replacements are important tools for improving energy efficiency and reducing heating and cooling costs.

For existing buildings, the roadmap to net zero involves both minor and major retrofits. Minor retrofits include measures such as submetering, insulation, improving airtightness, installing rooftop photovoltaic (PV) systems, and enhancing AC efficiency. Major retrofits are more comprehensive and include actions like CO2 demand control, heat recovery systems, whole-building lighting replacements, glazing upgrades or solar films, and significant cooling load reductions.

The Zero Carbon Building Roadmap demonstrates how these retrofits can lead to substantial reductions in energy use intensity and carbon offsets. Financially, these measures can significantly lower electricity bills and carbon offset costs. This strategic approach outlines a clear pathway to achieving net zero emissions, focusing on the benefits of energy efficiency and retrofitting existing buildings.