It is a groundbreaking online computer model, known as 'Bangladesh 2050 Energy Pathway’s Calculator' (BD2050), which demonstrates the relationship between the country's energy demand, supply, and greenhouse gas emissions reduction goal. This unique software integrates energy generation, usage, carbon emissions, and land use in Bangladesh, offering policymakers the ability to select energy sources with minimal climate impact. Created by a team of Cardiff University researchers led by British-origin Bangladeshi Dr. Monjur Mourshed, the calculator has received support from the UK’s Department for Energy and Climate Change and Bangladesh’s Ministry of Power, Energy and Mineral Resources. It is the first calculator of its kind for a least developed country, and is currently being utilized in the UK, Japan, China, and India. Users can access the calculator to explore energy, economy, and emission pathway options, enabling informed discussions and informed decision-making for the government and the public. British High Commissioner in Dhaka Robert Gibson emphasized the importance of using the calculator for making the right energy investment choices in the face of Bangladesh's growing energy infrastructure challenges. Dr. Saleemul Huq, Director of the International Centre for Climate Change and Development, highlighted the significance of developing a low carbon development pathway for Bangladesh, praising the Carbon Calculator as a valuable tool for achieving this goal with British assistance.