This report from the Lean Economy Connection, commissioned by the All Party Parliamentary Group on Peak Oil, explores the vital role that an economy-wide tradable rationing scheme (TEQs) could play in addressing the twin challenges of climate change and peak oil. This electronic system would ensure fair access to energy for all, guarantee that national emissions reductions targets are achieved, and support the active participation and cooperation of citizens and all energy users in rapidly reducing reliance on fossil fuels. The report explores the proposed scheme's design in some detail, drawing on the authors' fifteen years' experience in the field. It also reviews the latest science on climate change and peak oil, details the history of the TEQs model's development and considers how the scheme might fit with current and anticipated climate and energy policies.