December 14, 2011 Terry Wolf, Manager of Transmission Services Agenda Meeting Purpose MRES Profile Attachment O Calculation Capital Projects Budget Risks Question/Answer Meeting Purpose To provide an informational forum regarding the MRES forecasted Attachment O for 2012. The forecasted Attachment O for 2012 is calculated using the Midwest ISO’s EIA Form 412 Attachment OMRES template with a projected net revenue requirement and projected load. Rates become effective on January 1, 2012 for joint pricing zone comprised of Otter Tail Power Company, Great River Energy, and MRES. Attachment GG, and Attachment MM are planned to be effective January 1, 2012. - Missouri River Energy Services 61 Members served Transmission: ~239 miles Generation: ~740 MW Renewable: ~84 MW Rugby Wind Project Fort Peck Dam ITA Garrison Dam Canyon Ferry Dam Big Horn River CapX Fargo Yellowtail Dam Oahe Dam Irv Simmons Big Bend Dam Fort Randall Dam Laramie River Station Watertown Power Plant CapX Brookings Point Beach Nuclear Plant Marshall Wind Project Gavin’s Point Dam Odin Wind Project Worthington Wind Project MBPP MRES Member MRES Generation Resource Planned MRES Generation Resource Federal Hydroelectric Dam Transmission Projects (MBPP, Irv Simmons, ITA, CapX (Fargo, Brookings) Exira Station Red Rock Hydroelectric Plant MRES FERC Activities Transmission facilities are owned by Western Minnesota Municipal Power Agency (WMMPA) FERC Declaratory Order (EL08-22, 12/08) combines financial statements for ATRR Attach O effect 6/1/11 Incentive filing (EL11-45, 6/11) CapX; Fargo P2 & P3, and Brookings CWIP, Abandon Plant, Hypothetical cap structure 205 filing (ER12-351, 11/11) Forward Looking Attachment O Forward Rate Requirements Rate Base Operating Expenses Revenue Requirement and Rate Network Rate Summary Forward Rate Requirement By June 1 of each year, MRES will post on OASIS all information regarding any Attachment O True-up Adjustments for the prior year. 2012 Forward Looking Attachment O will be trued-up by June 2013. Beginning 2012 and each year thereafter, MRES will post on OASIS its projected Net Revenue Requirement including the True-Up Adjustment and load for the following year, and associated work papers in October. Beginning in 2011 and each year thereafter, MRES will hold a customer meeting to explain its formula rate input projections and cost detail. Total Rate Base Rate Base Item 2012 Projected (Monthly Average) Projected 12/31/11 $ Change % Change Explanation Gross Plant in Service $ 73,564,991 $ 71,839,919 $1,725,072 The increase is due mainly to the 2.4% capitalization (approximately $10M) of CAPX Fargo Phase I in December 2011. Accumulated Depreciation $ 35,220,891 $ 34,678,374 $ 542,517 1.6% Net Plant in Service $38,344,101 $ 37,161,545 $ 1,182,556 3.2% The increase is due to CapX Fargo Phases $17,020,550 219.7% 2 and 3 ($11.5M) and CapX Brookings ($5.5M). CWIP $ 24,768,664 $ 7,748,114 Working Capital $1,320,795 $ 1,269,018 Total Rate Base $ 64,433,560 $ 51,777 Annual Depreciation Expense combined with projected additions and retirements. 4.1% $ 46,178,677 $ 18,254,883 39.5% Net Plant + CWIP + Working Capital Note: The above numbers are transmission only and general and intangible plant allocated to Rate Base Earning Hypothetical Capital Structure Return Rate Base Item 2012 Projected (Monthly Average) Projected 12/31/11 $ Change % Change Gross Plant in Service $- $- $- -% Accumulated Depreciation $- $- $- -% Net Plant in Service $- $- $- -% CWIP Projects included in Rate Base $ 24,768,664 Working Capital $- Rate Base$ 24,768,664 Hypothetical Capital Structure $ 7,748,114 $ 17,020,550 219.7% $- $- Explanation Projected costs for CWIP projects requested to be included in rate base. -% $ 7,748,114 $ 17,020,550 219.7% Net Plant + CWIP + Working Capital Note: The above numbers are transmission only and general and intangible plant allocated to transmission. Operating Expenses Expense Item 2012 Projected 2011 Projected $ Change % Change O&M $ 5,221,403 $ 4,807,181 $ 414,222 8.6% Depreciation Expense $1,082,864 $ 840,295 $ 242,569 28.9% Explanation Increase in Depreciation Expense due to projected plant additions. Taxes Other than Income $290,268 $ 253,161 $ 37,107 Increased is due to a projected increase in total company property tax expense 14.7% and a projected increase in the transmission GP allocation percentage from 2011 to 2012. Operating Expense $6,594,534 $ 5,900,637 $ 693,897 11.8% O&M + Depreciation + Taxes Note: The above numbers are transmission only and A&G expenses, general plant depreciation and taxes allocated to transmission. Return on Rate Base (Actual Capital Structure) 2012 Projected 2011 Projected Long Term Debt 72% 74% Proprietary Capital 28% 26% Total 100.00% 100.00% Cost of Debt 5.91% 5.91% MISO Equity Return 12.38% 12.38% Rate of Return 7.73% 7.59% Total Rate Base Allowed Return -Actual Capital Structure $ Change % Change Explanation Decrease due to no additional debt ( 2%) expected in 2012, scheduled principal payments and projected higher equity. Increase due to projected net surplus 2% for 2012 combined with lower longterm debt. Cost of debt is expected to remain constant from 2011 to 2012. Equity return approved for MISO 0.00% Transmission Owners. (LTD*Cost of Debt) + (Proprietary -0.47% Capital * MISO Equity Return) 0.00% $ 64,433,560 $ 46,178,677 $ 18,254,883 39.5% From Rate Base Calculation $ 4,978,834 $ 2,916,880 $ 2,061,954 Increase largely due to additional 70.7% transmission investment. See Rate Base slide for additional detail. Return on Rate Base (Hypothetical Capital Structure) 2012 Projected 2011 Projected Comments Long Term Debt 55% N/A Proprietary Capital 45% N/A Total 100.00% N/A Weighted Cost of Debt 5.91% N/A MISO Equity Return Rate of Return- Hypothetical Capital Structure Rate of Return- Actual Capital Structure Difference between Hypothetical and Actual Capital Structure 12.38% N/A 8.823% N/A 55% * Cost of Debt plus 45% * 12.38% 7.727% N/A From previous slide. 1.096% N/A $ 24,768,664 N/A Rate Base- Hypothetical Capital Structure Additional Return –Hypothetical Capital Structure $ 271,558 N/A Capital Structure requested in docket EL 11-45-000. See previous slide. Hypothetical and actual capital structure difference * Hypothetical Capital Structure Rate Base A forward looking test year will be effective January 1, 2012 for MRES. Therefore, a hypothetical capital structure calculation for prior years in not applicable. Revenue Requirements 2012 2011 Projected $ Change % Change Projected Return -Actual Capital Structure Additional Return– Hypothetical Capital Structure Operating Expense Total Revenue Requirement Attachment GG Adjustments Attachment MM Adjustments Attachment O Revenue Requirement Before credits $ 4,978,834 $ 2,916,880 $ 2,061,954 $ 271,558 - $ 271,558 $ 6,594,534 $ 5,900,637 $ 693,897 11.8% $ 11,844,926 $ 8,817,517 $ 3,027,409 34.3% ($ 4,067,684) - ($ 4,067,684) ($ 819,435) - ($ 819,435) $ 6,957,807 $ 8,817,517 ($ 1,859,710) Revenue Credits $ 135,156 $ 135,156 Net Attachment O Revenue Requirement $ 6,822,651 $ 8,682,361 Explanation 70.7% Projected credit for the CapX Fargo Project. Projected credit for the CapX Brookings Project. (21.1%) Revenue credits assumed to remain unchanged from 2011 to 2012. Revenue Requirement ($ 1,859,710) (21.1%) before credits less Revenue Credits Capital Projects: Transmission Line Projects > $100K Project Brookings – Twins Cities 345 kV Line Fargo – St. Cloud 345 kV Line Estimated Voltage In-Service Date Forecasted 2012 Capital Addition 345 kV $ 10,976,012 345 kV Build new 345 kV line from St. Cloud (Quarry) to Alexandria to Fargo (Bison) $ 23,065,087 (MN/ND) (190 miles), includes Alexandria substation. Project Description Rate Summary $1.00 $0.84 $0.82 $0.80 $0.62 $0.60 $0.40 $0.20 $(0.02) $- $0.03 $(0.10) $(0.20) $(0.40) $(0.50) $(0.60) Return- Actual Capital Structure Additional ReturnHypothetical Capital Structure Operating Expenses Attachment GG Adjustment Attachment MM Adjustment Revenue Credits 2012 Projected ATRR Budget Risks Revenue Financing Demand/ Weather Regulatory Findings Tight Budgets Timing of Capital Projects Questions If you have any additional questions after the meeting, please submit via e-mail to Terry Wolf: twolf@mrenergy.com All questions and answers will be distributed by e-mail to all attendees. Additionally, the questions and answers will be posted on the MRES OASIS website (http://oasis.midwestiso.org/OASIS/MRET) within two weeks from the date of inquiry.