This Report demonstrates that a more sustainable energy future is within our reach, and that industrial energy efficiency is key. It shows how industrial energy efficiency can make a difference by providing a detailed comprehensive global assessment of potentials, technologies, economic benefits, as well as cost and barriers to be removed. It provides an overview of the policy instruments most useful for developing economies. This innovative work also reminds us that we must act now if we are to unlock the potential of current and emerging energy efficiency technologies. The opportunities are significant - by reducing energy inputs per unit of output we will benefit from improvements in standards of living while protecting the environment.