June 22, 2010 Sheila Gropp

1. “True-Up” Update June 15, 2010 Posting Formula Rate Customer Meeting June 22, 2010 Sheila Gropp

2. ProtocolsDefinitions • “Rate Year” • is defined as January 1 through December 31, year Rate is in effect. • “True-Up” • 1st phase of developing the new Rate Year Annual Transmission Revenue Requirement (ATRR) • based on historical (actual) data (primarily Form 1 data from previous year) • Posted by June 15 each calendar year. • “Annual Update” • 2nd phase – completes the update process for Rate Year ATRR • uses historical data already collected during “True-Up” Phase • adds in the projected data • is calculated and posted by October 15 each calendar year.

3. ProtocolsTimeline ********************************************************************************************* • “Rate Year”: January 1 – December 31, 2011 ********************************************************************************************* • “True Up” Update: June 15, 2010 • “True Up” Customer Meeting: June 22, 2010 <<< we are here • This date is kick off for Review Period • “True Up” Information Requests Period – 75 days: August 30, 2010 • 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, 2010 • “Annual Update” Customer Meeting: October 26, 2010 • Potential Repost of Annual Update: November 30, 2010 **********************************************************************************************

4. ProtocolsOASIS PostingsData Requests • OASIS Posting Requirements: • Update Calculation • Protocols • Accounting Manual and changes • Data Request Submission Address • Submission of Data Requests to: Sheila Gropp Westar Energy 818 Kansas Avenue Topeka, KS 66612 Sheila.A.Gropp@Westarenergy.com • Please provide all Data Requests in writing via email or letter.

5. Key Data Locations FERC Form 1 Data - 2009: FERC.gov (Westar Energy Form 1) (Kansas Gas & Electric Form 1) Formula Rate Postings: Westar Energy Oasis http://www.oatioasis.com Select SPP, then Westar Energy Accounting Manual Login: Accounting Data User ID: AFSReader Accounting Data Password: AFSReader#1 Southwest Power Pool Oasis http://www.oatioasis.com Select SPP, Member Postings, then Westar Energy

6. Westar Energy’s Oasis SiteLocating Site http://www.oatioasis.com/ Click on SPP Icon. It’s a hyperlink to SPP Oasis Node that contains SPP Transmission Owners Oasis Sites.

7. Westar Energy’s Oasis SiteLocating Site - 2 Click on Westar Icon. It’s a hyperlink to new Westar Energy Oasis Site.

8. Westar Energy’s Oasis SiteHome Page

9. Westar Energy’s Oasis SiteFinding Documents The Annual Update is under this Document Directory. Click on the file folder icon or name to open. The sub-folders will appear. Click on the June 15, 2010 Update – True-Up folder. Update Results

10. Westar Energy’s Oasis SiteFinding Accounting Manual Accounting Manual Login Accounting Data User ID: AFSReader Accounting Data Password: AFSReader#1 Under the Transmission Formula Rate (TFR) 2011 Rates Folder, is the sub-folder – “Accounting Information as of 12/31/2009” Select this folder to see available files. Under the Accounting Information as of 12/31/2009 Folder are several files. For the Accounting Manual, click on: “Accounting Manual as of 12/31/2009”

11. Southwest Power PoolOASIS Postingat Member Postings Link SPP OASIS Site

12. Formula Inputs Data and the Update

13. Formula InputsIndex of Template Pages

14. Formula Components 2009True-up Update • Data Included • Historical 2009 financial data Westar Energy Form 1 Kansas 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

15. Formula Components2009True-up Update “True Up” Update Results – 1st phase – 2011 Rates 2011 Rate is not complete until the October Update which will apply the Projected data

16. Formula Components2009True-up Update Base Plan Funded Projects Actual Gross Plant is the accumulation of plant placed in-service through the end of 2009. $7,694,924 includes plant in-service from 2006-2009. Accm. Deprec. is the total accumulated depreciation on these plant additions based on in-service dates. A-9 – Actual BPF Plant

17. Formula Components2009True-up Update Incentive Projects Actual A-11 – Incentive Plant

18. Formula Components2009True-up Update TU (True-Up) 2009 Projected vs. 2009 Actual Difference plus interest will become a true-up for the 2011 Rates In October 2010, the Annual TFR Update will complete the 2011 Rate Calculation. The Rate established for 2009 was derived from the 2007 actual expenses and plant plus the projected expenses and plant additions. The percentage of change in transmission plant projected for 2009 vs. 2007 actual transmission plant adjusts the 2007 Actual expenses to create the projected 2009 expenses by that same percentage change.

19. QUESTIONS?~Future Filing~Mark your CalendarsAnnual UpdateCustomer MeetingOctober 26, 2010