| 1981 – The company founded by Mark Weber is originally named Electrical Systems and begins a as small, part-time venture |
| 1986 – Customer base continues to grow steadily and Mark Weber turns Electrical Systems into a full-time business |
| 1989 – Mark and Rosemaire Weber incorporate company as ESE, Inc. |
| 1991 – ESE joins the International Association of Food Industry Suppliers |
| 1992 – Company becomes an Allen Bradley System Integrator |
| 1997 – ESE becomes a UL-listed panel shop |
| 1998 – The Food Quantifier 100, ESE’s first analytical instrument, is introduced to food processors |
| 1999 – ESE joins CSIA (Control System Integrator Association) |
| 2000 – ESE is chosen as the first business of its kind to partner as a Rockwell Automation Solution Provider; the Process Quantifier is introduced as the company’s first in-line analytical instrument |
| 2001 – The Food Quantifier 200 version is launched |
| 2005 – Company announces ESOP (Employee Stock Ownership Program); company achieves "Certified Member" in CSIA; Process Qptimizer software is added to ESE’s family of analytical products |
| 2006 – ESE celebrates its 20th anniversary as plant automation engineers. ESE expands its capabilities to include process design to their offerings. |
| 2007 – Brand new series of Q5 product analyzers launched |
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