EFCT: Environmental Footprint Comparison Tool.  A tool for understanding environmental decisions related to the forest products industry.  Energy. headerlink
Effects of decreased energy consumption on emissions to air

Fuel combustion is responsible for most of the sulfur dioxide and nitrogen oxides released from pulp and paper mills. In almost all cases, when you reduce energy consumption, you lower fuel use. The fuel savings may be at the mill or elsewhere (at the power plant from which the mill buys electricity, for instance). All other things being equal, the amount of SO2 released from the burning of fuels is directly proportional to the amounts of fuel burned. NOX emissions are usually more related to combustion conditions, and thus, unless combustion conditions become more favorable to NOx formation as fuel use is decreased (unlikely), NOx emissions should remain constant or decrease as fuel use decreases.

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