The Local Authority Delivery (LAD) funding effort aims to improve the energy efficiency of low-income households, especially those living in substandard off-gas grid housing. Its main goals are to reduce fuel poverty, phase out high-carbon fossil fuel heating systems, and align with the UK’s ambition to achieve net-zero emissions by 2050. As part of the Green Homes Grant, the government has set aside £500 million for local authorities in England in August 2020. This funding allows municipalities to establish energy efficiency retrofit programs that include insulation (Solid Wall, Cavity Wall, Underfloor, Loft, Room-in-Roof, Flat Roof, Park Home) and low-carbon heat options (Air Source Heat Pump, Ground Source Heat Pump, Solar Thermal Water Heating). The scheme is accessible to homeowners and private renters, with landlords required to contribute one-third of the costs. Notably, the initiative has evolved through several phases.