TYG FORM N-Q
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-Q
QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT
INVESTMENT COMPANY
Investment Company Act file number 811-21462
Tortoise Energy Infrastructure Corporation
(Exact name of registrant as specified in charter)
10801 Mastin Blvd., Suite 222, Overland Park, KS 66210
(Address of principal executive offices) (Zip code)
David J. Schulte
10801 Mastin Blvd., Suite 222, Overland Park, KS 66210
(Name and address of agent for service)
913-981-1020
Registrant's telephone number, including area code
Date of fiscal year end: November 30
Date of reporting period: February 28, 2007

Item 1. Schedule of Investments.
(Unaudited)
  February 28, 2007
 
  Shares

Value
 
Master Limited Partnerships and                
Related Companies — 175.9%(1)    
Crude/Refined Products Pipelines — 91.3%(1)    
Buckeye Partners, L.P.       567,102   $ 27,873,063  
Enbridge Energy Partners, L.P.       925,300     48,865,093  
Holly Energy Partners, L.P.(2)       427,070     19,696,468  
Kinder Morgan Management, LLC(3)(4)       1,617,533     80,892,825  
Magellan Midstream Partners, L.P.       2,224,713     93,660,417  
Plains All American Pipeline, L.P.       2,270,434     126,009,087  
Sunoco Logistics Partners, L.P.       934,625     52,432,463  
TEPPCO Partners, L.P.       869,520     37,163,285  
Valero, L.P.       886,689     55,861,407  
Valero GP Holdings, LLC       1,408,168     37,091,145  
 
 
              579,545,253  
 
 
Natural Gas/Natural Gas Liquid Pipelines — 40.2%(1)    
Boardwalk Pipeline Partners, L.P.       108,000     3,963,600  
Energy Transfer Equity, L.P.(5)       729,661     23,604,533  
Energy Transfer Partners, L.P.       1,722,250     94,999,310  
Enterprise GP Holdings, L.P.       71,400     2,618,952  
Enterprise Products Partners, L.P.       2,323,940     70,903,409  
ONEOK Partners, L.P.       262,255     16,978,389  
TC Pipelines, L.P.(5)       1,229,390     42,303,310  
 
 
              255,371,503  
 
 
Natural Gas Gathering/Processing — 30.8%(1)    
Copano Energy, LLC       590,448     39,016,804  
Crosstex Energy, L.P.       268,587     10,093,500  
Crosstex Energy, L.P.(4)(5)       712,760     23,278,742  
DCP Midstream Partners, L.P.       23,300     861,634  
Duncan Energy Partners, L.P.       451,100     10,826,400  
Hiland Holdings GP, L.P.       39,050     1,109,020  
Hiland Partners, L.P.       41,048     2,226,444  
MarkWest Energy Partners, L.P.(2)       1,040,177     67,507,487  
Targa Resources Partners, L.P.       118,900     2,865,490  
Universal Compression Partners, L.P.       84,700     2,518,131  
Williams Partners, L.P.       310,380     13,408,416  
Williams Partners, L.P.(5)       142,935     5,804,590  
Williams Partners, L.P. — Class B(5)       412,457     16,391,041  
 
 
              195,907,699  
 
 
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  February 28, 2007
 
  Shares

Value
 
Shipping — 3.9%(1)                
United States — 3.5%(1)    
K-Sea Transportation Partners, L.P.(2)       571,300   $ 22,566,350  
Republic of the Marshall Islands — 0.4%(1)    
Teekay LNG Partners, L.P.       67,200     2,473,632  
 
 
              25,039,982  
 
 
Propane Distribution — 9.7%(1)    
Inergy, L.P.       1,916,784     59,477,808  
Inergy Holdings, L.P.       49,715     2,065,658  
 
 
              61,543,466  
 
 
Total Master Limited Partnerships and    
Related Companies (Cost $693,249,572)             1,117,407,903  
 
 
Promissory Note — 0.8%(1)     Principal Amount
       
Shipping — 0.8%(1)    
E.W. Transportation, LLC — Unregistered, 9.28%, Due 3/31/2009    
(Cost $4,922,448)(5)(6)     $ 4,958,505     4,922,448  
 
 
Short-Term Investments — 0.1%(1)     Shares
       
Investment Company — 0.1%(1)    
First American Government    
Obligations Fund — Class Y, 5.00%(7) (Cost $420,556)       420,556     420,556  
 
 
Total Investments — 176.8%(1)    
(Cost $698,592,576)             1,122,750,907  
Auction Rate Senior Notes — (26.0%)(1)             (165,000,000 )
Interest Rate Swap Contracts — 0.2%(1)    
$345,000,000 notional — Unrealized Appreciation, Net             1,431,524  
Liabilities in Excess of Cash and Other Assets — (40.0%)(1)             (254,138,424 )
Preferred Shares at Redemption Value — (11.0%)(1)             (70,000,000 )
 
 
Total Net Assets Applicable to Common    
Stockholders — 100.0%(1)           $ 635,044,007  
 
 
(1) Calculated as a percentage of net assets applicable to common stockholders.
(2) Affiliated investment; the Company owns 5% or more of the outstanding voting securities of the issuer.
(3) Security distributions are paid in kind. Related company of master limited partnership.
(4) Non-income producing.
(5) Fair valued securities represent a total market value of $116,304,664 which represents 18.3% of net assets. These securities are deemed to be restricted.
(6) Security is a variable rate instrument. Interest rate is as of February 28, 2007.
(7) Rate indicated is the 7-day effective yield as of February 28, 2007.
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Certain of the Company’s investments are restricted and are valued as determined in accordance with procedures established by the Board of Directors. The table below shows the number of units held or principal amount, the acquisition date, acquisition cost, value per unit of such securities and percent of net assets which the securities comprise.
Investment Security Number of
Units or
Principal
Amount
Acquisition
Date
Acquisition
Cost
Value
Per Unit
Value as
Percent of
Net Assets

Crosstex Energy, L.P.     Subordinated Units       712,760     6/29/06     $ 20,000,046   $ 32.66     3.7 %
Energy Transfer Equity, L.P.     Common Units       729,661     11/27/06     20,000,008     32.35     3.7  
E.W. Transportation, LLC     Promissory Note     $ 4,958,505     5/03/04     4,884,128     N/A     0.8  
TC Pipelines, L.P.     Common Units       1,229,390     2/21/07     42,500,012     34.41     6.6  
Williams Partners, L.P.     Common Units       142,935     12/13/06     5,229,992     40.61     0.9  
Williams Partners, L.P.     Class B Common Units       412,457     12/13/06     14,770,085     39.74     2.6  
 

 
                          $107,384,271           18.3 %
 

 
The carrying value per unit of unrestricted common units of Williams Partners, L.P. was $39.03 on December 1, 2006, the date of the purchase agreement, and $38.75 on December 13, 2006, the date of acquisition and date an enforceable right to acquire the restricted Williams Partners, L.P. securities was obtained by the Company. The carrying value per unit of unrestricted common units of TC Pipelines, L.P. was $36.21 on February 20, 2007, the date of the purchase agreement, and $37.55 on February 21, 2007, the date of acquisition and date an enforceable right to acquire the restricted TC Pipelines, L.P. securities was obtained by the Company.
As of February 28, 2007, the aggregate cost of securities for Federal income tax purposes was $650,487,340. At February 28, 2007, the aggregate gross unrealized appreciation for all securities in which there was an excess of value over tax cost was $472,374,212 and the aggregate gross unrealized depreciation for all securities in which there was an excess of tax cost over value was $110,645. The net unrealized appreciation at February 28, 2007 was $472,263,567.
Investments representing 5 percent or more of the outstanding voting securities of a portfolio company result in that company being considered an affiliated company, as defined in the Investment Company Act of 1940. The aggregate market value of all securities of affiliates held by the Company as of February 28, 2007 amounted to $109,770,305, representing 17.3 percent of net assets applicable to common stockholders. A summary of affiliated transactions for each company which is or was an affiliate at February 28, 2007 or during the period from December 1, 2006 to February 28, 2007, is as follows:
  Share   Realized Gross February 28, 2007
 
  Balance
11/30/06
Gross
Additions
Gross
Deductions
Gain
(Loss)
Distributions
Received
Share
Balance
Value

Holly Energy Partners, L.P.     427,070     $            —     $      —     $      —     $   288,272     427,070     $  19,696,468  
K-Sea Transportation Partners, L.P.     571,300                 377,058     571,300     22,566,350  
MarkWest Energy Partners, L.P.     1,016,877     1,384,765             1,040,177     1,040,177     67,507,487  
 
 
 
 
 
 
            $1,384,765     $      —     $      —     $1,705,507           $109,770,305  
 
 
 
 
 
 
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Item 2. Controls and Procedures.
(a) The Registrant’s President and Chief Executive Officer and its Chief Financial Officer have concluded that the Registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the “1940 Act”)) were effective as of a date within 90 days of the filing date of this report, based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934, as amended.
(b) There were no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the Registrant's last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting.
Item 3. Exhibits.
Separate certifications for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)) are filed herewith.
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
      TORTOISE ENERGY INFRASTRUCTURE CORPORATION  
  By   /s/ David J. Schulte  
      David J. Schulte, President and Chief Executive Officer  
  Date   April 20, 2007  
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
  By   /s/ David J. Schulte  
      David J. Schulte, President and Chief Executive Officer  
  Date   April 20, 2007  
  By   /s/ Terry Matlack  
      Terry C. Matlack, Chief Financial Officer  
  Date   April 20, 2007  
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