ÕðÜñ÷åé Ýíá ãíùóôü ñçôü óôçí ðåñéï÷Þ ôçò äéïßêçóçò åðé÷åéñÞóåùí ðïõ åöáñìüæåôáé êáé åäþ. "You can't manage what you don't measure". ÕðÜñ÷ïõí óôïé÷åßá ãéá êÜðïéï åðï÷éáêü äåßêôç åðßäïóçò (ð.÷. AFUE: http://en.wikipedia.org/wiki/Annual_...ion_efficiency) êáé åÜí íáé ðüóï äéáöÝñåé áðü ôéò áðïäåêôÝò ôéìÝò;