EXHIBIT 21.1 SUBSIDIARIES OF PINNACLE GLOBAL GROUP, INC.(1) STATE OF SUBSIDIARY ORGANIZATION TRADE NAME - ---------------------------------------- ------------ ------------------------- TEI, Inc.(2) Tanknology Environmental Services, Delaware TES, Inc. Inc.(3).......................... Tanknology/Engineered Systems, Delaware Engineered Systems, Inc. Inc.(3).......................... Tanknology Worldwide, Inc.(3)...... Delaware TW, Inc. Tanknology of Illinois, Inc.(3).... Delaware Tanknology of Illinois, Inc. Energy Recovery Resources, Delaware James Waste Oil Service Inc.(3).......................... Harris Webb & Garrison, Inc.(2)......... Texas Pinnacle Management & Trust Texas Company(2)............................ Spires G.P. Combination Corp.(2)........ Texas Spires Financial G.P., Inc.(3)..... Texas Capital Financial Partner, Delaware Inc.(3).......................... Spires Financial Partners, Delaware Inc.(3)(4)....................... Spires L.P. Combination Corp.(2)........ Texas Spires Financial Funding, Delaware L.P.(3)(5)....................... Spires Financial, L.P.(3)(6)....... Delaware - ------------ (1) List of subsidiaries as of the closing of the Transactions. (2) Represents a first-tier subsidiary. (3) Represents a second-tier subsidiary. (4) The sole general partner of Spires Financial Funding, L.P. (5) The partnership interests are owned 84.3% by Spires Financial Partners, Inc., the sole general partner, and 15.7% by Spires L.P. Combination Corp. (6) The partnership interests are owned 1.0% by Spires Financial G.P., Inc., a general partner, 0.1% by Capital Financial Partner, Inc., a general partner, 24.9% by Spires Financial Funding, L.P., and 74.0% by Spires L.P. Combination Corp.