An energy retrofit is a process of improving the energy efficiency of an existing building or structure. It involves the installation of energy-efficient technologies and materials, such as insulation, efficient windows, energy-efficient lighting, and HVAC systems. The goal of an energy retrofit is to reduce energy consumption and costs, while improving the comfort and safety of the occupants. The retrofit process can also include upgrades to the building’s electrical and plumbing systems, as well as changes to the building’s layout and design. In addition to reducing energy costs, energy retrofits can also reduce greenhouse gas emissions, improve indoor air quality, and reduce noise pollution. Energy retrofits can be applied to both residential and commercial buildings, and can be tailored to meet the specific needs of the building. The benefits of energy retrofits are long-term, as they can help to reduce energy bills, increase the value of the building, and reduce the environmental impact of the building.