No Short Cut - You Need to Define the Precise Benefits
Tyrone Skogstrom, Management Consultant, Sweden
Start with a SCREENING OF ALL POSSIBLE BENEFITS that you refer to as "effectiveness". Exactly what will people be doing differently and what is that worth? What can they avoid and what is that worth?
And ensure the evaluation of benefits are reliable for the customer, otherwise you have done the effort in vain. Remember not to mix reliable numbers/figures with soft ones that are hard to accept as true monetary value.
You can read more here
how to handle benefits (and cost) with different reliability.
Energy projects are a great choice to improve, since they cost a lot and involve a lot of people and coordination.