There is a lot more to earned value than what should be described in a single blog, so I am going to break it up over several over the next few days. In the PMBoK (Project Management Body of Knowledge) Fourth Edition, Earned Value Management (EVM) would fall under a few of the knowledge areas. Mostly it will fall under: Project Time Management, Project Cost Management, and Project Communications Management. We can and will dig into these a little deeper, but for now, you’ll just need to know that it covers these three main knowledge areas. Probably the biggest, in my professional opinion, is Project Communications Management.
Why? Simple really . . . the whole reason for EVM is for tracking the actual earned (completed) progress of your project. EVM gives you an in-depth look directly into the heart of your actual progress. The end result, if desired is a graph that you can review for trends or use to report your excellent progress to the project sponsors and other stakeholders. Here is an example of an earned value graph for a project over a year long. As you can see, this project was in trouble from the start but the adjustments that were made will end this project almost perfectly with an SPI of 1.02 and a CPI of well over that (more on those later).
There are a few pieces to earned value which will all be discussed over the next few installments (again, I don’t want to hit you with it all at once). Things that I will discuss are:
- Planned Value
- Earned Value
- Actual Cost
- Cost Variance
- Schedule Variance
- Cost Performance Index (CPI)
- Schedule Performance Index (SPI)
- Estimate at Completion (EAC)
- Estimate to Complete (ETC)
- Budget at Completion (BAC)
- And last but not least . . . Variance at Completion (VAC)
Yes, there are a lot of accronyms in there and there are quite a few formulas as well, but don’t let them scare you. The formulas are straight forward and easy to you, especially if you set the up in some sort of tool that you use all the time such as Microsoft Excel. I will give you the formulas and show you when to use them and how to use them. I even have a tool that I’ve setup that I use on a daily basis that I will share with you if you desire. It is somewhat proprietary to my time and cost tracking systems, but we can work together to make it work for you as well.
BTW, back to the numbers that I showed you above, the Microsoft Project plan (not using EVM) shows this project as ahead most of the time. Can you imagine? I would have been telling management that my project was just fine (thinking that the whole time myself) while the project was actually in dire straights from the beginning. Using Earned Value allowed me to make serious adjustments and get this ship back on track. It wasn’t easy though, I assure you, but at least I knew issues existed early on so they could be corrected in time.
More on this topic later . . .