2016 Attachment O Projection Stakeholder MeetingAmeren Illinois Company

September 24, 2015

2

AGENDA

Main Purpose is to review AIC 2016 Projected Transmission Rate Calculations

• Timeline• AIC 2016 Projected Calculations

• Attachment O• Attachment GG• Attachment MM• 2016 AMIL Pricing Zone NITS Charge

3

NEW PROTOCOL TIMELINE

DateSchedule

(Forward-Looking Protocols)

June 1 Posting of annual true-up for prior year

September 1 Deadline for annual true-up meeting

September 1 Posting of net projected revenue requirement for following year

October 15 Deadline for annual projected rate meeting

November 1 Deadline for joint meeting on regional cost-shared projects

March 15 Transmission Owners submit informational filing to the Commission

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AIC Revenue Requirement

Projected 2015 vs Projected 2016

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AIC 2016 PROJECTED RATE BASE

Page.Line Jan-15 Jan-16 Change Percent2.6 Total Gross Plant 1,597,243,472 1,938,342,678 341,099,206 21%

2.12 Total Accum Depreciation 480,701,771 502,413,116 21,711,345 5%2.18 TOTAL NET PLANT 1,116,541,701 1,435,929,562 319,387,860 29%

2.18a 100% CWIP RECOVERY 27,739,705 42,507,018 14,767,313 53%

ADJUSTMENTS TO RATE BASE 0 N/A2.20 Account No. 282 -285,677,648 -368,700,067 -83,022,419 29%2.21 Account No. 283 -25,147,591 -6,071,756 19,075,835 -76%2.22 Account No. 190 38,348,097 41,586,396 3,238,299 8%2.23 Account No. 255 0 0 0 N/A2.25 Land Held for Future Use 1,209,908 2,363,868 1,153,960 95%2.26 CWC 5,525,584 5,834,598 309,014 6%2.27 Materials & Supplies 10,110,433 12,101,199 1,990,766 20%2.28 Prepayments 1,538,083 1,491,166 -46,917 -3%

TOTAL ADJUSTMENTS -254,093,135 -311,394,596 -57,301,462 23%

2.30 TOTAL RATE BASE 890,188,272 1,167,041,984 276,853,712 31%

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AIC 2016 PROJECTED EXPENSES

Page.Line Jan-15 Jan-16 Change PercentO&M

3.1 Transmission 41,012,814 47,078,280 6,065,466 15%3.1a Less LSE Expenses 1,685,383 1,495,616 -189,767 -11%3.2 Less Account 565 9,206,193 13,231,075 4,024,882 44%3.3 A&G 14,085,792 14,176,890 91,098 1%3.4 Less FERC Annual Fees 0 0 0 N/A3.5 Less EPRI, ect. 356,844 362,566 5,722 2%

3.5a Plus Trans. Reg. Comm. Exp 354,483 510,870 156,386 44%3.8 TOTAL O&M 44,204,670 46,676,783 2,472,114 6%

3.12 TOTAL DEPRECIATION 28,851,740 35,645,227 6,793,487 24%

TAXES3.13 Payroll 944,247 892,102 -52,145 -6%3.16 Property 1,132,036 1,216,554 84,517 7%3.18 Other 378,748 421,926 43,178 11%3.27 Income Taxes 39,706,388 50,317,510 10,611,122 27%

TOTAL TAXES 42,161,419 52,848,091 10,686,672 25%

TOTAL EXPENSES 115,217,829 135,170,102 19,952,273 17%

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AIC 2016 PROJECTED CAPITAL STRUCTURE

Capital Structure - 2015 Projection

Page.Line $ % Cost Weighted4.27 Long Term Debt 2,210,270,314 44.9% 0.0594 0.02674.28 Preferred Stock 61,721,350 1.3% 0.0490 0.00064.29 Common Stock 2,646,273,821 53.8% 0.1238 0.06664.3 Total 4,918,265,485 100.0% 0.0939

Capital Structure - 2016 Projection

Page.Line $ % Cost Weighted4.27 Long Term Debt 2,436,021,670 46.9% 0.0570 0.02674.28 Preferred Stock 61,721,350 1.2% 0.0490 0.00064.29 Common Stock 2,698,856,348 51.9% 0.1238 0.06434.3 Total 5,196,599,368 100.0% 0.0916

Change in Return -0.2323%

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AIC 2016 PROJECTED TOTAL REVENUE REQUIREMENT

Page.Line Jan-15 Jan-16 Change Percent2.30 TOTAL RATE BASE 890,188,272 1,167,041,984 276,853,712 31%4.30 Rate of Return 9.39% 9.16% -0.23% -2%3.28 Return 83,616,156 106,909,867 23,293,711 28%

Total Expenses 115,217,829 135,170,102 19,952,273 17%3.29 TOTAL GROSS REV. REQ. 198,833,985 242,079,969 43,245,984 22%

3.30 Less ATT. GG Adjustment 10,174,129 14,763,974 4,589,845 45%3.30a Less ATT. MM Adjustment 5,684,131 11,937,011 6,252,879 110%3.31 GROSS REV. REQ. UNDER ATT. O 182,975,725 215,378,985 32,403,260 18%

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AIC 2016 PROJECTED TRUE UP & NET REVENUE REQUIREMENT

Page.Line Jan-15 Jan-16 Change Percent1.1 Gross Revenue Requirement 182,975,725 215,378,985 32,403,260 18%1.6 Total Revenue Credits 12,163,781 13,373,302 1,209,521 10%

1.6a Historic Year Actual ATRR 123,689,426 153,102,512 29,413,086 24%1.6b Projected ATRR from Prior Year 133,507,911 143,000,924 9,493,013 7%1.6c Prior Year ATRR True-Up -9,818,485 10,101,588 19,920,073 -203%1.6d Prior Year Divisor True-Up -822,872 -3,254,838 -2,431,966 296%1.6e Interest on Prior Year True-Up -691,603 43,217 734,820 -106%

1.7a NET REVENUE REQUIREMENT 159,478,984 208,895,649 49,416,665 31%1.7b Prairie Power 0 0 0 N/A1.7 AIC Adjusted Revenue Requirement 159,478,984 208,895,649 49,416,665 31%

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AIC 2014 ATTACHMENT O TRUE UP

Ameren Illinois Company - AICAttachment O Revenue Requirement True-Up

Year Ended December 31, 2014

Attachment ONet Actual Revenue Requirement (2014 Actual Attachment O, Pg 1, Line 7a) $ 153,102,512

Net Projected Revenue Requirement (2014 Projected Attachment O, Pg 1, Line 7a) $ 143,000,924

Under/(Over) Recovery of Net Revenue Requirement $ 10,101,588

Historic Year Actual Divisor for Pricing Zone (2014 Actual Attachment O, Pg 1, Line 15) 7,205,351 Projected Year Divisor for Pricing Zone (2014 Projected Attachment O, Pg 1, Line 15) 7,045,000 Difference between Historic & Projected Yr Divisor 160,351 Prior Year Projected Annual Cost ($ per kw per yr) $ 20.2982 Prior Year Under/(Over) Divisor True-up $ (3,254,838)

Total Under/(Over) Recovery $ 6,846,750

Monthly Interest Rate (updated through July, 2015) 0.0263%Interest For 24 Months $ 43,217

Total Under/(Over) Recovery Including Interest $ 6,889,966

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AIC 2016 PROJECTED ATTACHMENT GG

AIC Attachment GG Calculation - Page 1 (1) (2) (3) (4)

Attachment O

Line Page, Line, Col. Transmission Allocator

No.

1 Gross Transmission Plant - Total Attach O, p 2, line 2 col 5 (Note A) 1,917,040,601

2 Net Transmission Plant - Total Attach O, p 2, line 14 and 23b col 5 (Note B) 1,436,058,340

O&M EXPENSE

3 Total O&M Allocated to Transmission Attach O, p 3, line 8 col 5 46,676,783

4 Annual Allocation Factor for O&M (line 3 divided by line 1 col 3) 2.43% 2.43%

GENERAL AND COMMON (G&C) DEPRECIATION EXPENSE

5 Total G&C Depreciation Expense Attach O, p 3, lines 10 & 11, col 5 (Note H) 4,409,668

6 Annual Allocation Factor for G&C Depreciation Expense (line 5 divided by line 1 col 3) 0.23% 0.23%

TAXES OTHER THAN INCOME TAXES

7 Total Other Taxes Attach O, p 3, line 20 col 5 2,530,581

8 Annual Allocation Factor for Other Taxes (line 7 divided by line 1 col 3) 0.13% 0.13%

9 Annual Allocation Factor for Expense Sum of line 4, 6, and 8 2.80%

INCOME TAXES

10 Total Income Taxes Attach O, p 3, line 27 col 5 50,317,510

11 Annual Allocation Factor for Income Taxes (line 10 divided by line 2 col 3) 3.50% 3.50%

RETURN

12 Return on Rate Base Attach O, p 3, line 28 col 5 106,909,867

13 Annual Allocation Factor for Return on Rate Base (line 12 divided by line 2 col 3) 7.44% 7.44%

14 Annual Allocation Factor for Return Sum of line 11 and 13 10.95%

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AIC 2016 PROJECTED ATTACHMENT GG

AIC Attachment GG Calculation - Page 2 (1) (2) (3) (4) (5) (6)

Line No.   Project Name

MTEP Project Number

Project Gross Plant

Annual Allocation Factor for Expense

Annual Expense Charge Project Net Plant

        (Note C) (Page 1 line 9) (Col. 3 * Col. 4) (Note D)

     

1a Wood River-Roxford 1502 138kV line 728 $ 3,424,487 2.80% $95,778.27 $ 2,941,428

1b Sidney-Paxton 138kV Reconductor 18 miles 870 $ 5,994,479 2.80% $167,657.47 $ 5,095,420

1c Coffeen Plant-Coffeen, North - 2nd. Bus tie 2829 $ 5,592,558 2.80% $156,416.28 $ 5,046,129

1d Latham - Oreana 8.5 mile 345kV line 2068 $ 23,567,231 2.80% $659,143.57 $ 22,559,921

1eBrokaw - South Bloomington 345/138kV Transformer & line extension 2069

$ 29,776,042 2.80% $832,795.62 $ 29,271,494

1f Fargo-Mapleridge-20 mile 345kV line & New Sub 2472 $ 30,285,967 2.80% $847,057.53 $ 30,149,872

               

(1) (2) (7) (8) (9) (10) (11) (12)

Line No.   Project Name

MTEP Project Number

Annual Allocation Factor for

ReturnAnnual Return

ChargeProject Depreciation

ExpenseAnnual Revenue

RequirementTrue-Up

AdjustmentNetwork

Upgrade Charge

        (Page 1 line 14) (Col. 6 * Col. 7) (Note E) (Sum Col. 5, 8 & 9) (Note F)Sum Col. 10 & 11

(Note G)

     1a Wood River-Roxford 1502 138kV line 728 10.95% $322,043.33 $52,500 $470,321.60 $ (20,657) 449,6651b Sidney-Paxton 138kV Reconductor 18 miles 870 10.95% $557,873.94 $99,720 $825,251.41 $ (45,173) 780,0781c Coffeen Plant-Coffeen, North - 2nd. Bus tie 2829 10.95% $552,477.30 $98,904 $807,797.58 $ (2,536) 805,262

1d Latham - Oreana 8.5 mile 345kV line 2068 10.95% $2,469,981.27 $398,220 $3,527,344.85 $ 262,869 3,790,214

1eBrokaw - South Bloomington 345/138kV Transformer & line extension 2069 10.95% $3,204,800.32 $477,312 $4,514,907.94 $ - 4,514,908

1f Fargo-Mapleridge-20 mile 345kV line & New Sub 2472 10.95% $3,300,969.87 $470,323 $4,618,350.76 $ - 4,618,351

                   

2 Annual Totals $14,763,974 $194,503 $14,958,477

3 Rev. Req. Adj For Attachment O $14,763,974

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AIC 2014 ATTACHMENT GG TRUE-UP

AIC 2014 Attachment GG True Up

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) Actual Projected Attachment GG Actual True-Up Applicable True-Up MTEP Actual Annual Revenues Annual Adjustment Interest Adjustment TotalLine Project Project Attachment GG Revenue Allocated Revenue Principal Rate on Interest True-Up

No. Name Number Revenues Requirement 1 to Projects 1 Requirement 1 Under/(Over) Under/(Over) Under/(Over) Adjustment Projected [Col. (d), line 1 Actual Attachment GG x (Col. (e), line 2x / Attachment GG Col. (h) x Col. (i)

p 2 of 2, Col. 102 Col. (e), line 3)]2 p 2 of 2, Col. 102 Col. (g) - Col. (f) Line 5 x 24 months 2 Col. (h) + Col. (j)

1 Actual Attachment GG revenues for True-Up Year 1 $ 5,755,759

2a Wood River-Roxford 1502 138kV line 728 527,494 545,315 524,788 (20,527) 0.0263% (130) (20,657)

2b Sidney-Paxton 138kV Reconductor 18 miles 870 935,340 966,939 922,049 (44,890) 0.0263% (283) (45,173)2c Coffeen Plant-Coffeen, North - 2nd. Bus tie 2829 873,483 902,993 900,473 (2,520) 0.0263% (16) (2,536)2d Latham - Oreana 8.5 mile 345kV line 2068 3,231,345 3,340,512 3,601,732 261,220 0.0263% 1,649 262,869 2e Brokaw-S. Bloom 345/138kV Trans & 345kV line 2069 - - - - 0.0263% - - 2f Fargo-Mapleridge-20 mile 345kV line & New Sub 2472 - - - - 0.0263% - -

3 Subtotal $ 5,567,662 $ 5,755,759 $ 5,949,042

4 Under/(Over) Recovery $ 193,283 $ 1,220 $ 194,503

5 Applicable Interest rate per month (expressed to four decimal places) Interest Rate updated through July 2015 0.0263%

1 Amount excludes True-Up Adjustment, as reported in True-Up Year projected Attachment GG, page 2, column 11.2 Rounded to whole dollars.

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AIC 2016 PROJECTED ATTACHMENT MM

AIC Attachment MM Calculation - Page 1 (1) (2) (3) (4)

Attachment OLine Page, Line, Col. Transmission AllocatorNo.

1 Gross Transmission Plant - Total Attach O, p 2, line 2 col 5 (Note A) 1,917,040,601 1a Transmission Accumulated Depreciation Attach O, p 2, line 8 col 5 480,982,260 2 Net Transmission Plant - Total Line 1 minus Line 1a (Note B) 1,436,058,340

O&M TRANSMISSION EXPENSE3 Total O&M Allocated to Transmission Attach O, p 3, line 8 col 5 46,676,783 3a Transmission O&M Attach O, p 3, line 1 col 5 47,078,280 3b Less: LSE Expenses included in above, if any Attach O, p 3, line 1a col 5, if any 1,495,616 3c Less: Account 565 included in above, if any Attach O, p 3, line 2 col 5, if any 13,231,075 3d Adjusted Transmission O&M Line 3a minus Line 3b minus Line 3c 32,351,589

4 Annual Allocation Factor for Transmission O&M (Line 3d divided by line 1a, col 3) 6.73% 6.73%

OTHER O&M EXPENSE4a Other O&M Allocated to Transmission Line 3 minus Line 3d 14,325,194 4b Annual Allocation Factor for Other O&M Line 4a divided by Line 1, col 3 0.75% 0.75%

GENERAL AND COMMON (G&C) DEPRECIATION EXPENSE

5 Total G&C Depreciation Expense Attach O, p 3, lines 10 & 11, col 5 (Note H) 4,409,668 6 Annual Allocation Factor for G&C Depreciation Expense (line 5 divided by line 1 col 3) 0.23% 0.23%

TAXES OTHER THAN INCOME TAXES7 Total Other Taxes Attach O, p 3, line 20 col 5 2,530,581 8 Annual Allocation Factor for Other Taxes (line 7 divided by line 1 col 3) 0.13% 0.13%

9 Annual Allocation Factor for Other Expense Sum of line 4b, 6, and 8 1.11% 1.11%

INCOME TAXES10 Total Income Taxes Attach O, p 3, line 27 col 5 50,317,510 11 Annual Allocation Factor for Income Taxes (line 10 divided by line 2 col 3) 3.50% 3.50%

RETURN 12 Return on Rate Base Attach O, p 3, line 28 col 5 106,909,867 13 Annual Allocation Factor for Return on Rate Base (line 12 divided by line 2 col 3) 7.44% 7.44%

14 Annual Allocation Factor for Return Sum of line 11 and 13 10.95%

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AIC 2016 PROJECTED ATTACHMENT MM

AIC Attachment MM Calculation - Page 2 (1) (2) (3) (4) (5) (6) (7) (8)

Line No.   Project Name

MTEP Project Number

Project Gross Plant

Project Accumulated Depreciation

Transmission O&M Annual

Allocation Factor

Annual Allocation for Transmission

O&M Expense

Other Expense Annual

Allocation Factor

Annual Allocation for

Other Expense

        (Note C)   Page 1 line 4 (Col 4 * Col 5) Page 1 line 9 (Col 3 * Col 7)Multi-Value Projects (MVP)    

1a Pana-Sugar Creek - CWIP 2237 $ 18,938,437 $ - 6.73%

$ - 1.11%

$ 210,081

1b   Pana-Sugar Creek - Plant in Service 2237 $ 20,602,126 $ 190,724 6.73% $ 12,828 1.11%

$ 228,536

1c   Pana-Sugar Creek - Land 2237 $ 15,627 $ - 6.73%

$ - 1.11%

$ 173

1d Sidney-Rising - CWIP 2239 $ 301,094 $ - 6.73%

$ - 1.11%

$ 3,340

1e   Sidney-Rising - Plant in Service 2239 $ 5,981,345 $ 63,770 6.73% $ 4,289 1.11%

$ 66,350

1f Palmyra-Pawnee - CWIP 3017 $ 14,184,258 $ - 6.73%

$ - 1.11%

$ 157,344

1g   Palmyra-Pawnee - Plant in Service 3017 $ 17,212,417 $ 337,918 6.73% $ 22,729 1.11%

$ 190,935

1h Fargo-Galesburg-Oak Grove - CWIP 3022 $ 204,390 $ - 6.73%

$ - 1.11%

$ 2,267

1i   Fargo-Galesburg-Oak Grove - Plant in Service 3022 $ 3,184,794 $ 30,923 6.73% $ 2,080 1.11%

$ 35,328

1j Pawnee-Pana - CWIP 3169 $ 8,878,841 $ - 6.73%

$ - 1.11%

$ 98,492

1k   Pawnee-Pana - Plant in Service 3169 $ 3,406,077 $ 12,204 6.73% $ 821 1.11%

$ 37,783

                   

(1) (2) (9) (10) (11) (12) (13) (14) (15) (16)

Line No.   Project Name

MTEP Project Number

Annual Expense Charge

Project Net Plant

Annual Allocation Factor

for ReturnAnnual Return

Charge

Project Depreciation

ExpenseAnnual Revenue

RequirementTrue-Up

Adjustment

MVP Annual Adjusted Revenue

Requirement

        (Col 6 + Col 8) (Col 3 - Col 4) (Page 1 line 14) (Col 10 * Col 11) (Note E)(Sum Col. 9, 12 &

13) (Note F)Sum Col. 14 & 15

(Note G)Multi-Value Projects (MVP)    

1a Pana-Sugar Creek - CWIP 2237 $ 210,081 $ 18,938,437 10.95% $ 2,073,482 $ - $ 2,283,563 $ 102,017 $ 2,385,580

1b   Pana-Sugar Creek - Plant in Service 2237 $ 241,365 $ 20,411,401 10.95% $ 2,234,750 $ 315,008 $ 2,791,122 $ 4,466 $ 2,795,588

1c   Pana-Sugar Creek - Land 2237 $ 173 $ 15,627 10.95%

$ 1,711

$ -

$ 1,884 $ 1,527 $ 3,411

1d Sidney-Rising - CWIP 2239 $ 3,340 $ 301,094 10.95%

$ 32,965

$ -

$ 36,305 $ 12,200 $ 48,505

1e   Sidney-Rising - Plant in Service 2239 $ 70,639 $ 5,917,575 10.95% $ 647,888 $ 107,339

$ 825,866 $ - $ 825,866

1f Palmyra-Pawnee - CWIP 3017 $ 157,344 $ 14,184,258 10.95% $ 1,552,969 $ - $ 1,710,313 $ 829,982 $ 2,540,295

1g   Palmyra-Pawnee - Plant in Service 3017 $ 213,664 $ 16,874,498 10.95% $ 1,847,511 $ 243,379 $ 2,304,553 $ 263,842 $ 2,568,395

1h Fargo-Galesburg-Oak Grove - CWIP 3022 $ 2,267 $ 204,390 10.95%

$ 22,378

$ -

$ 24,645 $ 9 $ 24,654

1i   Fargo-Galesburg-Oak Grove - Plant in Service 3022 $ 37,408 $ 3,153,872 10.95% $ 345,303 $ 43,748

$ 426,459 $ - $ 426,459

1j Pawnee-Pana - CWIP 3169 $ 98,492 $ 8,878,841 10.95% $ 972,103

$ - $ 1,070,595 $ 3,177 $ 1,073,772

1k   Pawnee-Pana - Plant in Service 3169 $ 38,604 $ 3,393,874 10.95% $ 371,580 $ 51,521

$ 461,704 $ - $ 461,704

                       

2 MVP Total Annual Revenue Requirements $11,937,011 $1,217,220 $13,154,231

3 Rev. Req. Adj For Attachment O $11,937,011

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AIC 2014 ATTACHMENT MM TRUE-UP

AIC 2014 Attachment MM True Up

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k)          Actual            Projected Attachment MM Actual True-Up Applicable True-Up    MTEP Actual Annual Revenues Annual Adjustment Interest Adjustment TotalLine Project Project Attachment MM Revenue Allocated Revenue Principal Rate on Interest True-Up

No. Name Number Revenues Requirement 1 to Projects 1 Requirement 1 Under/(Over) Under/(Over) Under/(Over) Adjustment  Projected [Col. (d), line 1 Actual    Attachment MM x (Col. (e), line 2x / Attachment MM Col. (h) x Col. (i)          p 2 of 2, Col. 142 Col. (e), line 3)]2 p 2 of 2, Col. 142 Col. (g) - Col. (f) Line 5 x 24 months 2 Col. (h) + Col. (j)                     

1 Actual Attachment MM revenues for True-Up Year 1 $ -     

2a Pana-Sugar Creek - CWIP 2237 - - 101,377 101,377 0.0263% 640 102,017 2b Pana-Sugar Creek - Plant in Service 2237 - - 4,438 4,438 0.0263% 28 4,466 2c Pana-Sugar Creek - Land 2237 - - 1,517 1,517 0.0263% 10 1,527 2d Sidney-Rising - CWIP 2239 - - 12,123 12,123 0.0263% 77 12,200 2e Sidney-Rising - Plant in Service 2239 - - - - 0.0263% - - 2f Palmyra-Pawnee - CWIP 3017 - - 824,776 824,776 0.0263% 5,206 829,982

2g Palmyra-Pawnee - Plant in Service 3017 - - 262,187 262,187 0.0263% 1,655 263,842 2h Fargo-Galesburg-Oak Grove - CWIP 3022 - - 9 9 0.0263% - 9 2i Fargo-Galesburg-Oak Grove - Plant 3022 - - - - 0.0263% - - 2j Pawnee-Pana - CWIP 3169 - - 3,157 3,157 0.0263% 20 3,177 2k Pawnee-Pana - Plant in Service 3169 - - - - 0.0263% - -                            

3 Subtotal $ - $ - $ 1,209,584

4 Under/(Over) Recovery $ 1,209,584 $ 7,636 $ 1,217,220

5 Applicable Interest rate per month (expressed to four decimal places) Interest Rate updated through July 2015 0.0263%

1 Amount excludes True-Up Adjustment, as reported in True-Up Year projected Attachment MM, page 2, column 15.2 Rounded to whole dollars.

17

AMIL PRICING ZONE SCHEDULE 9 CHARGE

Page.Line Jan-15 Jan-16 Change Percent1.7 AIC Adjusted Revenue Requirement 159,478,984 208,895,649 49,416,665 31%1.7 ATXI Adjusted Revenue Requirement 9,851,594 8,495,791 -1,355,803 -14%1.7 PPI Adjusted Revenue Requirement * 3,863,036 4,421,778 558,742 14%

Total Revenue Requirement 173,193,614 221,813,218 48,619,604 28%1.15 Ameren Illinois Divisor 7,095,335 7,118,197 22,861 0%

. Annual Cost ($/kW/Yr) 24.410 31.161 6.752 28%

. Network & P-to-P Rate ($/kW/Mo) 2.034 2.597 0.563 28%

* PPI uses a historical Attachment O which is updated June 1st each year. The amount shown for 2015 is the ATRR revised in effective 6/1/14. The amount shown for 2016 is the ATRR effective 6/1/15. PPI has filed at FERC to begin using forward looking Attachment O effective 1/1/16. However, the new ATRR is not posted yet.

18

AIC 2016 PROJECTED MVP SPEND

Ameren MVPsAmeren Name 2016 CAPEX MTEP #s MTEP Description

Illinois Rivers $53.1 million

2237 Pana - Mt. Zion - Kansas - Sugar Creek 345 kV line2239 Sidney to Rising 345 kV line3017 Palmyra-Quincy-Meredosia - Ipava & Meredosia-Pawnee 345 kV Line3169 Pawnee to Pana - 345 kV Line

Spoon River $.9 million

3022 Fargo-Galesburg-Oak Grove 345 kV Line   

19

2016 PROJECTED SIGNIFICANT TRANSMISSION PROJECTS

Project Name Total CostIllinois Rivers $68.0Fargo - Mapleridge $56.4Pinckneyville - West Frankfort $16.6Grand Tower - Makanda $15.8Cahokia - Buck Knob $13.4Sidney - Bunsonville $12.0Macomb West Tap $11.7Brokaw - Gibson City $9.6Jacksonville NW - Meredosia $8.0Keemin Substation $7.4Effingham - Neoga S. $6.7Baldwin - Prairie State $6.0Madison Industrial - Madison State $5.8S. Belleville - Tilden $5.3Gibson City - Paxton $5.1

QUESTIONS?

21

Appendix

Supplemental Background Information

(Not covered during presentation)

22

APPENDIX – AMIL PRICING ZONE

• Both AIC and ATXI are transmission owning subsidiaries of Ameren

Corporation, as well as a MISO Transmission Owners (TOs)• AIC will continue to build and own traditional reliability projects• ATXI is in the process of building and will own new regional

transmission projects• Prairie Power, Inc. became a TO in the AMIL pricing zone effective

June 1, 2013.• The sum of all there Attachment O net revenue requirements equals

the total revenue requirement for AMIL pricing zone to be collected under Schedule 9 (NITS)

23

APPENDIX - MISO ATTACHMENTS O, GG & MM

Calculate rates for Schedules 9, 26 & 26-A• Attachment GG - Schedule 26 • Attachment MM - Schedule 26-A • Attachment O - net revenue requirement billed under Schedule 9• Schedules 26 and 26-A are billed by MISO• Schedule 9 is billed by Ameren

24

APPENDIX - MISO ATTACHMENT GG

• Cost Recovery for certain Network Upgrades• Eligible projects

• Market Efficiency• Generator Interconnections

• Cost shared based upon project type• MISO-wide based on load• Subregional based on LODF (Line Outage Distribution Factor)

• AIC has four Attachment GG projects completed• One additional project is under construction

• These projects were approved by MISO under prior Tariff provisions which allowed limited cost sharing for certain reliability projects

25

APPENDIX - MISO ATTACHMENT MM

• Cost recovery for Multi-Value Projects (MVPs)• Very similar format as Attachment GG• Criteria for being considered

• Developed through planning process and support energy policy• Multiple types of economic value across multiple pricing zones with

benefit to costs > 1• Address at least one:

• Projected NERC violation• Economic-based issue

• Cost shared across MISO based on load• AMIL Zone is approximately 9%

• Ameren MVPs will primarily be built by ATXI• AIC will be responsible for modifications needed to its existing facilities

26

APPENDIX - MISO ATTACHMENT O, GG & MM

• All transmission costs included in Attachment O calculation • Schedule 9 based on net revenue requirement – reductions for:

• Costs recovered in Schedules 26 & 26-A• Revenue Credits

• Point-to-Point revenue in Schedules 7 & 8• Rental revenue• Revenue from generator interconnections

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APPENDIX - MISO TRANSMISSION EXPANSION PLAN (MTEP)

• Developed on an annual basis building upon previous analysis• MISO, Transmission Owners & Stakeholders• Includes subregional planning meetings

• MTEP goals• Ensure the reliability of the transmission system• Ensure compliance with NERC Standards• Provide economic benefits, such as increased market efficiency• Facilitate public policy objectives, such as meeting Renewable Portfolio

Standards• Address other issues or goals identified through the stakeholder process

• Multiple future scenarios analyzed• End result – comprehensive, cohesive plan for MISO footprint

• MTEP approved by MISO Board of Directors

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MISO MVPS

• Brief history of development• Began investigating value added expansion in 2003• 2008 Regional Generation Outlet Study (RGOS) - formed basis of

Candidate MVP portfolio• Portfolio refined due to additional analysis

• MISO approved portfolio of 17 Projects• Seven transmission line segments (MTEP proj numbers) in Ameren territory• Ameren identifies these three projects as:

• Illinois Rivers (four line segments)• Spoon River• Mark Twain (two line segments)

• Broadly cost-shared, AMIL pricing zone allocated 9% of each MVP no matter where project is located or who builds it

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APPENDIX - MAP OF AMEREN MVPS

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APPENDIX - RATE INCENTIVES

• FERC approved the following rate incentives for Illinois Rivers in Docket No. EL10-80– CWIP (no AFUDC)– Abandonment (requires additional filing prior to recovery)– Hypothetical capital structure during construction for ATXI

• FERC approved similar incentives for Spoon River and Mark Twain Projects in Docket No. ER12-2216

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APPENDIX - MISO WEB LINKS

• Transmission Pricing - Attachments O, GG & MM Information• https

://www.misoenergy.org/MarketsOperations/TransmissionSettlements/Pages/TransmissionPricing.aspx

• Ameren OASIS• http://www.oasis.oati.com/AMRN/index.html

• MTEP 15• https://www.misoenergy.org/Planning/TransmissionExpansionPlanning/

Pages/MTEP15.aspx

• Schedule 26 & 26-A Indicative Charges • https

://www.misoenergy.org/Planning/TransmissionExpansionPlanning/Pages/MTEPStudies.aspx

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APPENDIX – AIC

• Additional questions on these topics can be sent to Ameren at:– MISOFormulaRates@ameren.com