THE COMPUTER ALSO 
HEATS THE BUILDING. 
The energy crunch. 
It’s been on our minds at IBM for quite some time. 
Back in 1973 we began offering computer systems that manage energy 
as only a computer system can. 
These systems take thousands of energy-saving actions every day, 
based on information about weather conditions, use patterns, and other 
factors. 
They turn lights on and off. Turn heat and air conditioning units on and 
off. Control hot water heaters as needed. And more. All to prevent waste. 
In one of our customer’s buildings, a system we installed cut the 
power bill by over $8000 in 
the first month. 
And in the headquarters 
building of the IBM division 
that builds these systems, 
energy management equip- 
ment recycles heat generated 
by the computer installation 
itself. The outside tempera- 
ture has to drop below 11° F 
before the boilers need to be 
turned on. 
Energy management systems obviously conserve energy. 
But what they really do is manage things better and more economically 
than people can manage them alone. 
That’s what computer systems are very, very good at doing, fml 
