ExxonMobil. Plastics injection moulding is an energy intensive process. And, because energy carries both an environmental and financial cost, it makes sound sense not to waste it. Energy spending in a typical plastics injection moulding plant often approaches the cost of direct labour. But, while labour ranks high among management concerns, little effort is expended on controlling energy spending. The potential savings are considerable, however. For an injection moulding plant that has implemented no effective energy reduction measures, experience shows some 30% of total energy use is discretionary. This is avoidable energy spending that can be clawed back through practical management, maintenance and investment actions.