This study examines the effect of intangible investment on sectoral energy intensity. Using data for 40 economies and a ‘rest of the world’ grouping from the World Input-Output Table and the World Environmental Accounts, I find that intangible investment is associated with reductions in sectoral energy intensity, particularly in the manufacturing sector. A discussion of policy implications will be provided. This topic is of particular interest given international efforts to improve energy efficiency and reduce greenhouse gas emissions.