It provides the motive power for machinery, enables delivery of multiple inputs into production, is required in the processing of industrial outputs and is critical to the distribution and use of industrial goods and services. Industry uses a variety of energy sources, and its choices are largely determined by price. The greening agenda, which focuses on mitigating global warming and climate change, requires a sharp cut in the use of fossil-fuel energy sources in the absence of efficient capture and sequestration of all greenhouse gas emissions. The first set is the capital cost of providing the energy-generating capacity, which includes the cost of infrastructure, the cost of equipment and the cost of construction. The second set includes those costs involved in running the capital equipment—the recurrent costs of production. Finally, the third set, and the most difficult one to measure, are the environmental externalities generated in energy production and use.