Consumers EnergyElectric COS Model

January 2007

Benefits of an Excel model

• The Excel model– Uses current Excel technology– Can be understood and updated by anyone

with Excel knowledge– Can be instantly updated for many changes

How does the model work?

• How does data get into the model

• How do the allocators work

• How does it specifically assign

• How does the allocator exhibit page work

• How do we print the reports

What happens in the model?

Tabs

• These are the tabs in the model

• We’ll discuss each tab in the following slides

Instructions

Contents

How do we get the new data into the model?

• There’s input data on 3 tabs of the model, Input1, Input2 and AllocatorData

• Input1 is for total company numbers and assigning the allocator to use

• Input2 is for allocators and direct assignments

• AllocatorData is the raw demand that gets used to develop the demand allocators

Input1

Input2

AllocatorData

How do we get reports out of the model?

• How do we print the exhibit pages

• How do we print the workpapers

• How do we print just the summary pages

• How do we get those same reports for the production and distribution tabs

Total

Prod

Dist

How do we change the model?

• Inserting/Removing rates

• Inserting/Removing detail

• Adding/Changing allocators

Differences between DTE & CE Models

• Assignment of the production allocator

• AllocatorData Tab– Raw Demand Data– Classpeak & 4CP MH

Choosing the Production Allocator

• Here you enter either 4 or 12 for the ‘method’ variable and then enter the weightings for demand, energy on peak and total energy

• This is a little different than the DTE model in that you do not need to enter anything for the ‘Staff’ variable (located in B3)

Raw Demand Data

• The AllocatorData tab includes the raw demand data for 12 monthly peaks as well as the 4CP MH and classpeak

• Here you can see the 12CP data

How to change 12CP into any other monthly peak method

• All you need to do is delete the raw data for the months not in use

• For example, if you wanted to make a 4CP allocator you would delete the data from months circled below

Creating a 4CP Allocator

• Now that the off months have no data, the totals update and those values are used to create the 12CP allocator

• The name of the allocator does not change, but the underlying data has

• The assignment of the production allocator needs to use 12 for the ‘method’ variable