espey is a recognized industry leader of power conversion, magnetics, and build-to-print products, and dynamic lifecycle management services that support the demands of the defense and industrial markets. we couple our vertical manufacturing capabilities with the agility of a small business, governed by large business disciplines. all design, manufacturing, and testing are performed in our 150,000+ square foot facility located at 233 ballston ave, saratoga springs, new york. espey is a us small business certified company that is iso as9100 certified and publicly traded on nyse amex (esp). espey has been in business since 1928 and continues to be successful through the design and manufacture of new and improved products by using cutting-edge and emerging technologies.