EX-99.16(a)

POWER OF ATTORNEY

The undersigned trustees of Invesco Balanced-Risk Commodity Strategy Fund (the “Fund”), a series of AIM Investment Funds (Invesco Investment Funds), a Delaware statutory trust (the "Registrant"), hereby appoint PHILIP A. TAYLOR and JOHN M. ZERR (with full power to each of them to act alone) his/her attorney-in-fact and agent, in all capacities, to execute, deliver and file in the names of the undersigned, any and all instruments that said attorneys and agents may deem necessary or advisable to enable the Registrant to comply with or register any security issued by the Registrant under the Securities Act of 1933, as amended, and/or the Investment Company Act of 1940, as amended, and the rules, regulations and interpretations thereunder, with respect to the Registrant's Registration Statement on Form N-14 with respect to the proposed reorganization of Invesco Commodities Strategy Fund, a series of the Registrant, with and into the Fund, including any and all pre- and post-effective amendments thereto, any other document to be filed with the U.S. Securities and Exchange Commission and any and all documents required to be filed with respect thereto with any other regulatory authority.  Each of the undersigned grants to each of said attorneys full authority to do every act necessary to be done in order to effectuate the same as fully, to all intents and purposes, as he/she could do if personally present, thereby ratifying all that said attorneys-in-fact and agents may lawfully do or cause to be done by virtue hereof.

           This Power of Attorney may be executed in one or more counterparts, each of which shall be deemed to be an original and all of which shall be deemed to be a single document.

The undersigned officers and trustees hereby execute this Power of Attorney as of the 30th day of November, 2011.

/S/Phil A. Taylor                                             Philip A. Taylor	/S/ Martin L. Flanagan                                             Martin L. Flanagan
/S/ David C. Arch                                             David C. Arch	/S/ Jack M. Fields                                             Jack M. Fields
/S/ Bob R. Baker                                             Bob R. Baker	/S/ Prema Mathai-Davis                                             Prema Mathai-Davis
/S/ Frank S. Bayley                                             Frank S. Bayley	/S/ Larry Soll                                             Larry Soll
/S/ James T. Bunch                                             James T. Bunch	/S/ Hugo F. Sonnenschein                                             Hugo F. Sonnenschein
/S/ Bruce L. Crockett                                             Bruce L. Crockett	/S/ Raymond Stickel, Jr.                                             Raymond Stickel, Jr.
/S/ Rodney Dammeyer                                             Rodney Dammeyer	/S/ Wayne W. Whalen                                             Wayne W. Whalen
/S/ Albert R. Dowden                                             Albert R. Dowden