Last use case was truncated

Here is the last use case which was truncated in the previous e-mail.

.	The local power utility cannot build any more generating
capacity.  To prevent outages, it is motivating companies to restrict
consumption.  An engineering company is interested in a new contract
which gives lower prices if they can guarantee that certain levels of
power consumption will never be exceeded.  However the energy
consumption profile of the site varies considerably; one week welding is
crucial, the next chemical treatment is essential.  The company needs
different energy profiles to shed different non-essential loads at
different times and under different conditions.  By defining different
work profiles the facility manager can ensure power is only cut from
non-essential activities whilst core production can continue.