2018 Guide to Effective Proxies

6 TH EDITION | GUIDE TO EFFECTIVE PROXIES 288 DTE ENERGY 2018 PROXY STATEMENT 1 PROXY STATEMENT SUMMARY DTE Energy Aspiration and System of Priorities At DTE Energy Company (“DTE Energy,” the “Company,” “we,” “us” or “our”), we aspire to be the best-operated energy company in North America and a force for growth and prosperity in the communities where we live and serve. This aspiration drives everything we do and has led us to develop a system of corporate priorities that guide our daily, monthly and annual plans which help us to achieve this aspiration. Our Board of Directors (the “Board”) evaluates our Company’s and executives’ performance based upon goals that align with this system of priorities and we will refer to this system of priorities as we discuss DTE Energy’s performance and our compensation programs throughout this Proxy Statement. Becoming the best-operated energy company means having great corporate governance, competitive compensation and excellent shareholder relations. DTE ENERGY COMPANY