CURB is a climate action planning tool developed by the World Bank in partnership with C40 Cities Climate Leadership Group, Global Covenant of Mayors, and AECOM Consulting that helps cities prioritize low-carbon investments based on cost, feasibility, and impact on energy use and greenhouse gas emissions. CURB allows cities to plan across six sectors in an integrated way: private buildings, municipal buildings and public lighting, electricity generation, solid waste, transportation, and water and wastewater. CURB is being by cities around the world to compare the cost, energy, and climate impact of different technological and policy solutions to select the most effective investments possible, develop and refine climate action plans, set informed targets, and acquire project financing.