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120 billion cubic feetof landfill gas has been recoveredby DTE Biomass Energy.DTE Energy ServicesDTE Energy Services owns and/or operates on-site energyprojects throughout the country for automakers, steelcompanies, large commercial and industrial businesses,and the pulp and paper industry.DTE Pet CokeDTE Pet Coke helps businesses in the pulp and paperindustry significantly reduce energy costs by replacingnatural gas and fuel oil energy sources with pulverizedpetroleum coke.DTE Biomass EnergyDTE Biomass Energy converts methane emitted fromdecomposing trash or waste wood into electricity, steamand pipeline-quality gas at more than 32 landfill recoverysites in 14 states. By collecting and turning harmfulgreenhouse gases into a renewable source of energy,we’ve recovered more than 120 billion cubic feet of landfillgas to date -- a positive environmental impact equivalentto planting more than 700 million trees.DTE Biomass Energy literally turns trash into treasure by capturing themethane gas produced by landfills and converting it into a renewablesource of energy.DTE Methane ResourcesDTE Methane Resources is a niche operator in abandonedcoal mine methane recovery with a unique blend ofcompetencies. Methane, a potent greenhouse gas, isa byproduct of the geological process that transformsorganic material into coal. DTE Methane Resourcescollect the methane gas in abandoned and operationalcoal mines.For more information on DTE Energy andits businesses, visit our Web site atdteenergy.com.8 Who We Are

DTE Energy TradingDTE Energy Trading provides energy sourcing andmanagement solutions for municipalities, electriccooperatives, independent power producers, investorowned utilities and retail energy suppliers. DTE EnergyTrading manages large power generation, gas storage andtransportation assets.DTE Energy VenturesDTE Energy Ventures is a technology investmentssubsidiary focused on identifying and developing emergingenergy technologies.DTE Energy Board of DirectorsDTE Energy is governed by a board of directors currentlyconsisting of 13 members.As a matter of policy, in accordance with New YorkStock Exchange (NYSE) listing standards, we believeour board should consist of a majority of independentdirectors. To be classified as “independent,” the boardmust affirmatively determine that a director has nomaterial relationship with the company. More specificinformation on the categorical standards for independenceis available on line at oricalStandards.html.The board has established standing committees forAudit, Corporate Governance, Finance, Nuclear Review,Organization and Compensation, and Public Responsibility.The board committees act in an advisory capacity to thefull board, except that the Organization and CompensationCommittee has direct responsibility for the CEO’s goals,performance and compensation, along with compensationof other executives. The Audit Committee has oversightresponsibility for the independent registered publicaccounting firm.The DTE Energy WayThe DTE Energy Way is a living document that describes,in detail, the behavior we expect from each of ouremployees – from the board room to the meeting roomto the service truck. It applies to all employees ofDTE Energy and is supported by other policy documentsand collective bargaining agreements. It provides a broadrange of information and guidance about the standardsof integrity and business conduct that employees have aresponsibility to understand and follow.It spells out our commitments to equal opportunity, to thehealth and safety of our employees, to zero tolerance andto many other ethical business practices.Our Core ValuesDTE Energy’s core values guide its actions. These valuesresonate through our corporation. They explain who weare, how we behave and how we plan to excel.Integrity - Honor our values and commitmentsn Weact with honor and integrityn Weensure that our actions are aligned withcorporate valuesn Weactively contribute through open and honestcommunicationn Webelieve that how we achieve results is as importantas the results themselvesThe full text of The DTE Energy Way is availableat y.pdfThe DTE Energy Corporate Responsibility Report April 2008 9

Respect - Treat everyone with dignityn Werespect the diversity and value of each personn Werecognize and develop others’ capabilitiesn Weseek first to achieve understanding, and then westrive to be understoodn Wegive and receive honest feedback with respectand compassionCustomer Service - Deliver services and productsthat meet or exceed our customers’ expectationsn We understand and strive to anticipate our customers’needs, externally and internallymeasure success by how well we meet and exceedour customers’ expectationsBusiness Success - Commit to the strength andvibrancy of the enterprisen We vigorously pursue sustained growth, profitability,and enhancement of shareholders’ investmentn Weestablish and pursue clear, well-defined goalsn Weinvest in the near term with an eye toward longterm successn Wehave an enterprisewide focus and live acommitment to DTE Energy’s success, recognizing thatour company is larger than any one groupn Wewill conduct our business in compliance with allapplicable laws and regulationsn Wen Weimprove the quality of life in the communitieswe serven Weprotect the environmentSafety - Commit to performing our jobs in the safestmanner possiblen We protect the safety of our customers, the generalpublic and ourselves. This includes a commitment tominimize our environmental impact and create acleaner worldn Wework together to continuously improve safetyprocessesn Wepromote safety as a core value to others on andoff the jobn Wetake responsibility for our own personal safety,follow all safety-related rules and procedures, andremain mindful of the safety of othersEthics and ComplianceDTE Energy is committed to the highest standards ofethical conduct in all of its dealings with employees,customers, suppliers, shareholders and the communitieswe serve. Our business reputation is built upon the basicprinciples of honesty, integrity and fairness – principlesthat demonstrate a commitment to values-based behavior,and not just following the rules.At the cornerstone of this commitment are codes ofconduct, adopted for both our board of directors and ouremployees. These codes address inherent risk areas andprovide guidance for behavior when these issues arise.In addition to our codes of conduct, DTE Energy has twoorganizations that support ethical behavior and compliancewith laws and regulations: the Enterprise ComplianceOffice and the Office of Assistant to the Chairman.Learning - Build on our past and reach to the futuren Wedrive for continuous improvement; we refuse toaccept the status quon Westrive to be innovative and creativen Welearn from each other; we teach each othern Wetake prudent risks and learn from successesand mistakes10 Who We AreFor more information on our core values,please refer to the DTE Energy Way, or visit ourWeb site at dteenergy.com/dteenergyway.

Enterprise Compliance is responsible for developing,implementing and monitoring a comprehensive legaland regulatory compliance program for DTE Energy andits subsidiaries. The compliance program is built onthe foundation established by the Federal SentencingGuidelines and is structured around leadership andoversight, risk assessment, auditing and monitoring,training and communication.The mission of the DTE Energy Enterprise ComplianceOffice is to further the company’s goal of establishinga culture that values compliance with all local, stateand federal laws and regulations as a foundation of itscorporate philosophy. In support of this mission, weprovide tailored training to ensure everyone is capableof executing their role in achieving compliance withapplicable laws and regulations. This includes boardmembers, executive officers, senior leaders, managers,employees and, as appropriate, external agents.The Office of the Assistant to the Chairman – Ethicsand Employee Issues is responsible for providingguidance on integrating ethical business behaviors intoall aspects of our business operations. “Ethics-in-Action –Taking the Right Road” is a program run by this office thatoffers employees an anonymous, confidential on-lineor telephone-based service for reporting questionableethical behaviors. Access to this service is available24-hours a day, seven days a week. You can learnmore about this service at alConcerns.html.Dr. Len Marrella (right), a leading expert on business ethics, discusses“the power of character” with Ethics Council member Fouad Ashkar.Unique to this office is the Chairman’s Ethics Council, aforum established in 1998 to provide ethical reviews ofbusiness and employment practices and programs. Thecouncil is chaired by the CEO and consists of a diversecross-section of employees who meet regularly to reviewand discuss policies and programs that have ethicalimpacts on our operations.Both of these offices are committed to fostering anenvironment of open communication with DTE Energy’sstakeholders and have implemented mechanisms toincrease our ability to identify and respond to ethics andcompliance issues in a timely and purposeful manner.We’re dedicated to helping both business units andemployees understand their roles in modeling ethicalbehavior and compliance with laws and regulations in all ofthe work we do.For more information on our Code of Ethicsand Standards of Behavior, visit dteenergy.com/corporateGovernance/dteway-6V5.The DTE Energy Corporate Responsibility Report April 2008 11

PeoplePutting our values to work by putting people firstFrom the board room to the school room to the powerplant control room, we believe in putting people first –those who work for us as well as those we serve.So, we’re putting our values to work by focusing on ourcustomers with renewed energy, striving to create amodel workplace, and fostering a corporate culture ofcommunity support and volunteerism.WorkforceOver time, the one factor that will differentiate DTE Energyfrom its competitors is the caliber of its employees.In recognition of this, we’re focused on building ahighly-engaged and high performing workforce with thecommitment and skills needed for success. We’re creatinga workplace where:n Everyone is treated with dignity, fairness and respectn mployees are encouraged to set high goals, developEand perform to their fullest potentialn ersonal responsibility and accountability arePencouraged and rewardedn Wecommunicate directly with each other; wepersistently seek to improve our performance12 PeopleTo make this happen, we must successfully manage jobperformance, retain and attract talented professionals,and create a corporate culture that values, rewards andcultivates those who strive for excellence.Transition and Knowledge TransferOver the next 10 years, we face the challenge of preparingfor a workforce transition. Our workforce is aging.Essential skill sets and operational knowledge must beretained and leadership skills developed as our long-timeemployees retire and new employees enter the workforce.We are also challenged to ensure the development of newskills and capabilities that will be required to implementtechnological advancements and process improvements.To that end, we’ve developed a competency-basedperformance management system that describes the skillsand behaviors employees are expected to demonstrate.These critical skills are categorized into the six factorsof our ENERGY Model: Executes with Edge, NavigatesChange, Engages People, Reflects Shared Values,Generates Business Insights and Yields Results.We are also moving forward on the development of astandardized knowledge transfer process that can beapplied at various levels and in various settings as longterm employees retire from the organization.

We have a series of knowledge transfer processes andworkbooks to help document critical process and positioninformation. These assist in the transfer of informationrelating to processes, relationships, knowledge andgeneral responsibilities.Learning and DevelopmentIn support of our employee development needs, we alsooffer a broad range of in-house employee developmentprograms. Our course offerings include topics such as:n Critical ThinkingnSafety courses– Hazard Awareness– Confined Space– Advanced Trenching and ShoringnOperations courses– Environmental Awareness– Overhead Lines Circuit Evaluationn Vehicleand Mobile Equipment coursesMobile Cranes– Commercial Drivers License–nCustomer Service ExcellenceEmployee FeedbacknAchieving InfluencenCrucial ConversationsnEffective CommunicationnEffective Listening; Facilitating Teamworkn ffective Internet Usage; Overview of theEEnergy IndustryAnnual data helps us measure the changing attitudesin our employee population. Each year, our employeesparticipate in a Gallup Survey designed to measureemployee engagement. For several years, the datareflected a steady increase in engagement. For 2006, ourengagement ratings declined. Our evidence suggests thata primary cause of the reduction was employee reaction toactual and anticipated staffing reductions as well as otheroperationally-related changes.In addition to a broad offering of internal employeetraining and leadership programs, we also provide otherdevelopment opportunities for employees and leaders.These include:n Educational Assistance ProgramnGraduate Fellowship ProgramnCommunity Leadership Programn Women’sLeadership Forumn360 Degree Surveys to Focus DevelopmentnIndividual Development PlansLastly, we offer classes that enhance our employeestechnical skills so that they feel safe and in compliance,doing the “hands on” work that is vital to our business.These course offerings link to the qualificationrequirements of their job positions. A brief sample ofsome includes:We continue to be focused on building an engagedworkforce. Many efforts have been implemented to aidin the engagement of our workforce including enhancingour performance management program to supportrole clarity and ensuring clear expectations for ouremployees. Several business-unit specific projects werealso implemented that will continue to support furtherengagement of our workforce.Gallup results did show meaningful improvement in2007. During 2008, we will continue to place focus anddedication on creating an actively engaged workforce. Wewill continue our education of leadership through refreshertraining focused on enhancing workforce engagement. Wewill also be ensuring strong accountability on developingmeaningful employee engagement action plans andensuring plan implementation. We will continue to use ourleadership talent planning process to monitor progress.The DTE Energy Corporate Responsibility Report April 2008 13

And, we understand the need to celebrate the positives– we will encourage departmental recognition awards forachieving successes and we will recognize our leaderswho have achieved top quartile Gallup results for theirefforts in helping shape our engaged workforce.The leadership of the company views employeeengagement as a priority and will continue to seek toidentify areas of improvement and implement ways tobuild an actively engaged workforce.Diversity at DTE EnergyDiversity at DTE Energy includes all the differencesthat define each of us as unique individuals. Thesedifferences include, but are not limited to: culture,ethnicity, race, gender, age, sexual orientation,disability, nationality, education, experience and beliefs.DiversityEmployee Health and Well-BeingDTE Energy values diversity – in all its forms.We have increased our efforts to provide our employeeswith the resources they need to lead healthier lifestylesat work and at home. Our Energize Your Life wellnessprogram is a comprehensive program that providesemployees with free preventive health services, health-riskmanagement and disease management strategies.We recognize that to succeed in a multicultural society,we must create an inclusive environment where a diversegroup of ideas and life experiences is leveraged forfuture success.Our diversity strategy reflects this emphasis and involvesa wide range of programs and initiatives from strategichiring to supplier diversity and beyond.A recent study of best practices in diversity reveals thatseveral of our programs, including our slate of formalpolicies and procedures (The DTE Energy Way, our corevalues and our code of conduct), are best in class. Thesedocuments reflect our strong commitment to ensuringthat all hiring, promotion and other personnel decisionscomply with Equal Opportunity laws and regulations.DTE Energy is committed to a policy of affirmative actionand maintains Affirmative Action Plans designed tofacilitate the placement of qualified women, minorities,people with disabilities and veterans. Such efforts haveenabled us to attain representation of females andminorities at many levels throughout the company.Kim McCrary, supervisor, Gas Operations, is a 17-year employee withDTE Energy.14 PeopleThe overall representation level of females and minoritiesin our workforce compares favorably to the national utilityindustry average:

nior Officials 1,641 1,348& Managers82%29318%30819%Professionals2,294 526%Administrative,Office &1,427Clerical36225% 1,06575%69649%Craft Workers2,116 2,04297%743%40619%Operatives1,832 Workers12410786%1714%2923%25% 2,83327%Total Workforce 10,612 7,97775% 2,635(circa 9/1/07)DTEEnergyLast Reported Utility Average*Women25%25%Minorities27%21%Category* from EEOC Consolidated EEO-1 Reports - 2005One component of our current diversity strategy is tounderstand and embrace unique differences within ourworkforce. We accomplish this through our diversitytraining curriculum, which provides a wide range of coursetopics including gender, age differences, team dynamics,and managing diversity. In 2008, we will enhance ourcurriculum by introducing an enterprise wide webbased diversity course that will increase awareness andcommunicate a consistent message to all employees.Despite our achievements in attracting and retaining adiverse work force, further strides can be made. We haveminority and female placement goals in some sectorsand we are continuously working to align our recruitmentstrategy with targeted, action-oriented programs aimed atmeeting these goals.Our efforts are focused

DTE Energy Co. (NYSE: DTE) is a diversified energy company headquartered in Detroit, Mich. We are involved in the development and management of energy-related businesses and services nationwide. DTE Energy Principal Operating Subsidiaries Revenues 8.5 Billion Net Income 971 Million Market Cap 7.17 Billion Assets 24 Billion