The report provides an overview of the West Dunbartonshire Council's business case for energy efficiency in street lighting. The report includes an executive summary, introduction, approach, results, affordability, and next steps. The strategic context includes an introduction to the council's objectives, climate change, and the current condition of the street lighting stock. The approach section outlines the methodology used to assess the energy efficiency of the street lighting system and the potential benefits of implementing energy-efficient lighting. The results section presents the findings of the assessment, including the potential energy savings and cost savings. The affordability section discusses the financial implications of implementing energy-efficient lighting and the potential return on investment. The next steps section outlines the next steps for the council to take in implementing energy-efficient lighting. Overall, the report provides a comprehensive overview of the council's business case for energy efficiency in street lighting.