June 23, 2009

Actual Update

For June 15, 2009 Posting

Formula Rate

Customer Meeting

ProtocolsProtocolsDefinitionsDefinitions

“Rate Year” is defined as January 1 through December 31

“True-Up” is completed on or before June 15 each calendar year. based on historical (actual) data (primarily Form 1 data from previous

year)

“Annual Update” recalculates the ATRR and Formula Rate for new Rate Year uses historical data collected during “True-Up” Phase adds in the projected data is calculated and posted on or before October 15 each calendar year.

ProtocolsProtocolsTimelineTimeline

********************************************************************************************* “Rate Year”: January 1 – December 31, 2010********************************************************************************************* “True Up” Update: June 15, 2009

“True Up” Customer Meeting: June 23, 2009 This date is kick off for Review Period

“True Up” Information Requests Period – 75 days: August 31, 2009

Issues - Westar Energy Response Date: Good faith effort to respond within 10 business days from date of information request.

Additional periods for data review resolutions, per Protocols posted on WR OASIS********************************************************************************************** “Annual Update”: October 15, 2009

“Annual Update” Customer Meeting: October 22, 2009

Potential Repost of Annual Update: November 30, 2009**********************************************************************************************

ProtocolsProtocolsOASIS Postings / Data RequestsOASIS Postings / Data Requests

OASIS Posting Requirements: Updated Calculation Protocols Accounting Manual and changes Data Request Submission Address

Submission of Data Requests to: Sheila GroppWestar Energy818 Kansas AvenueTopeka, KS 66612Sheila.A.Gropp@WestarEnergy.com

Please provide all Data Requests in writing via email or letter.

Key Data LocationsKey Data Locations

FERC Form 1 Data - 2008:FERC.gov

(Westar Energy Form 1)

Formula Rate Postings:Westar Energy Oasis

http://sppoasis.spp.org/OASIS/WR or http://oatioasis.com

Accounting Data User ID: AFSReaderAccounting Data Password: AFSReader#1

Southwest Power Pool Oasishttp://sppoasis.spp.org/OASIS/SWPP

or http://oatioasis.com

Formula InputsFormula Inputs

Sheila Gropp

Formula InputsFormula InputsIndex of Template Pages Index of Template Pages

Tab ID Schedule/Worksheet Designation Description Date to be Posted

Actual Net Rev Req Schedule Actual Net Rev Req Actual net revenue requirements for most recent calendar year June 15

Gross Rev Req Schedule Actual Gross Rev Req Actual gross revenue requirements for most recent calendar year June 15

A-1 Revenue Credit Actual revenue credits June 15

A-2 Actual transmission load WE Revenues June 15

A-3 Actual Retail Adder WE Divisor June 15

A-4 Actual O&M Exclusions (WEN) WE Retail Adder June 15

A-5 Actual Accum Deferred Income Taxes (WEN) WEN O&M Exclusions June 15

A-6 Actual O&M Exclusions (WES) WEN ADIT June 15

A-7 Actual Accum Deferred Income Taxes (WEN) WES O&M Exclusions June 15

A-8 Actual Depreciation Rate Calculation WES ADIT June 15

A-9 Actual Base Plan Funded Projects Depreciation Adjustment June 15

A-10 Actual Wages and Salaries Plant Additions for Upcoming Year June 15

A-11 Actual Incentive Return on Incentive Plant Incentive Plant Additions June 15

A-12 Actual Economic Portfolio Funded Projects Base Plan Funded Additions June 15

TU True-up True-up Adjustment and Interest Calculation Oct 15

BPF BPF Summary Total Actual and Projected BPF projects Oct 15

EPP EPP Summary Total Actual and Projected EPP projects Oct 15

Projected Net Rev Req Projected Net Rev Requirement Projected net revenue requirements for next calendar year Oct 15

Projected Gross Rev Req Projected Gross Rev Req Projected gross revenue requirements for next calendar year Oct 15

P-1 Transmission Plant Projected transmission plant for next calendar year Oct 15

P-2 Exp. & Rev. Credits Projected expenses and revenue credits for next calendar year Oct 15

P-3 Trans. Network Load Projected transmission load for next calendar year Oct 15

P-4 BPF Projects Projected Base Plan Funded Projects Oct 15

P-5 Econ. Projects Projected Economic Portfolio Funded Projects Oct 15

Formula Components Formula Components - 2008- 2008

Annual UpdateAnnual Update

Data Included Historical 2008 financial data

Westar Energy Form 1Kansas Gas & Electric Form 1

FERC Approved Incentive Plant – Actual SPP Projects - Actual

Template References: Template Form 1 Reference format:

Page, Line, Column Worksheet Reference format:

Worksheet P-1 (with section if applicable) Yellow areas are change areas

References and Clarifications 1

Actual Gross Revenue Requirements

Entered as + due to line 20 formula

References and Clarifications: If you see any references that are not correct or if you have any suggestion, please let me know.

References and Clarifications 2

Base Plan Funded Projects Actual

A-9 – Actual BPF Plant

Gross Plant is the accumulation of plant placed in-service through the end of 2008.

$7,483,253 includes plant in-service from 2006-2008.

Accm. Deprec. is the total accumulated depreciation on these plant additions based on in-service dates.

References and Clarifications 3

Incentive Projects Actual Incentive Projects Projected

A-11 – Incentive Plant

P-1 – Projected Trans Plant

Incentive Section

Wrap UpWrap Up

Thank You!Thank You!