In such circumstances, different kinds of data (specified operating temperatures, batch duration,
charge weights, number of starts and stops, *etc.*) may need to be recorded and fed into
a mathematical model to arrive at *a theoretical energy requirement given the pattern of
production activity*. This is another manifestation of an expected-consumption formula (ECF).

The model used as an ECF need not be complex, although indeed it may be so. The only requirement, from an M&T
standpoint, is that the model yields **a single number representing expected energy demand**. Note that
there will be a different model for each energy source feeding a monitored process: one for
steam, one for electricity, and so on as the case may be.

Back to 'Expected-consumption formulae'