Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Amendment No. 2 to Registration Statement No. 333-128378 on Form S-1 of our report dated November 17, 2005 (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the preparation of the financial statements of DCP Midstream Partners Predecessor from the separate records maintained by Duke Energy Field Services, LLC) relating to the financial statements of DCP Midstream Partners Predecessor, appearing in the Prospectus, which is part of this Registration Statement, and relating to the financial statement schedule appearing elsewhere in this Registration Statement.

We also consent to the reference to us under the heading “Experts” in such Prospectus.

/s/ Deloitte & Touche LLP  

Denver, Colorado
November 17, 2005