#1DTE ENERGY BUSINESS UPDATE September 30, 2022 DTI DTE DE EXHIBIT 99.1 DTE#2Safe harbor statement The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as "anticipate," "believe," "expect," "may," "could," "would," "projected," "aspiration," "plans" and "goals" signify forward-looking statements. Forward-looking statements are not guarantees of future results and conditions but rather are subject to various assumptions, risks and uncertainties. This document contains forward-looking statements about DTE Energy's financial results and estimates of future prospects, and actual results may differ materially. Many factors impact forward-looking statements including, but not limited to, the following: the duration and impact of the COVID-19 pandemic on DTE Energy and customers, impact of regulation by the EPA, the EGLE, the FERC, the MPSC, the NRC, and for DTE Energy, the CFTC and CARB, as well as other applicable governmental proceedings and regulations, including any associated impact on rate structures; the amount and timing of cost recovery allowed as a result of regulatory proceedings, related appeals, or new legislation, including legislative amendments and retail access programs; economic conditions and population changes in our geographic area resulting in changes in demand, customer conservation, and thefts of electricity and, for DTE Energy, natural gas; the operational failure of electric or gas distribution systems or infrastructure; impact of volatility in prices in the international steel markets and in prices of environmental attributes generated from renewable natural gas investments on DTE Vantage's operations; the risk of a major safety incident; environmental issues, laws, regulations, and the increasing costs of remediation and compliance, including actual and potential new federal and state requirements; the cost of protecting assets and customer data against, or damage due to, cyber incidents and terrorism; health, safety, financial, environmental, and regulatory risks associated with ownership and operation of nuclear facilities; volatility in commodity markets, deviations in weather, including climate change, and related risks impacting the results of DTE Energy's energy trading operations; changes in the cost and availability of coal and other raw materials, purchased power, and natural gas; advances in technology that produce power, store power or reduce power consumption; changes in the financial condition of significant customers and strategic partners; the potential for losses on investments, including nuclear decommissioning and benefit plan assets and the related increases in future expense and contributions; access to capital markets and the results of other financing efforts which can be affected by credit agency ratings; instability in capital markets which could impact availability of short and long-term financing: impacts of inflation and the timing and extent of changes in interest rates; the level of borrowings; the potential for increased costs or delays in completion of significant capital projects; changes in, and application of, federal, state, and local tax laws and their interpretations, including the Internal Revenue Code, regulations, rulings, court proceedings, and audits; the effects of weather and other natural phenomena, including climate change, on operations and sales to customers, and purchases from suppliers; unplanned outages at our generation plants; employee relations and the impact of collective bargaining agreements; the availability, cost, coverage, and terms of insurance and stability of insurance providers; cost reduction efforts and the maximization of plant and distribution system performance; the effects of competition; changes in and application of accounting standards and financial reporting regulations; changes in federal or state laws and their interpretation with respect to regulation, energy policy, and other business issues; successful execution of new business development and future growth goals; contract disputes, binding arbitration, litigation, and related appeals; the ability of the electric and gas utilities to achieve net zero emissions goals; and the risks discussed in DTE Energy's public filings with the Securities and Exchange Commission. New factors emerge from time to time. We cannot predict what factors may arise or how such factors may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements speak only as of the date on which such statements are made. We undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made or to reflect the occurrence of unanticipated events. This document should also be read in conjunction with the Forward-Looking Statements section in DTE Energy's public filings with the Securities and Exchange Commission. DTE 2#3DTE Business Update Environmental, Social & Governance (ESG) Appendix 3#4DTE is delivering another successful year Continuing to deliver for our team, customers, communities and investors ✓ Announced 650 MW voluntary renewable supply deal with Ford, the largest renewable energy purchase from a utility in U.S. history ✓ ✓ Significant milestones in electric generation transition, including placing new natural gas plant in service Progressing on infrastructure renewal to provide safe, reliable power Upcoming events DTE - 3Q earnings call - — Filing IRP early November Providing 2023 outlook and 5-year plan updates at EEI 1. Reconciliation of operating earnings (non-GAAP) to reported earnings included in the appendix OTE#5Focusing on our team, customers and communities while delivering for investors Ensuring the health and safety of our employees Received Best Employers Award for outstanding commitment to advancing employee well-being through comprehensive and innovative benefits and Our Team initiatives 000 80€ 188 Customers Communities Tin Investors DTE Addressing our customers' most vital needs Received ENERGY STAR Excellence in Energy Efficiency Award from the EPA for outstanding contributions to protect the environment Providing safe, reliable and cleaner energy and supporting our communities Named to Civic 50 by Points of Light for five consecutive years Delivering premium shareholder returns Raised 2022 operating EPS¹ guidance midpoint from $5.90 to $6.00 1. Reconciliation of operating earnings (non-GAAP) to reported earnings included in the appendix DTE LO#6Operational and financial achievements across all business lines; raised 2022 operating EPS¹ guidance DTE Progress across all businesses DTE Electric: Began commercial operations at Blue Water Energy Center • DTE Vantage: Additional on-site energy and RNG projects online in 2H 2022 On track for successful 2022 Electric regulatory proceedings on schedule to file IRP and receive rate case order in November DTE Gas: Continued progress on main renewal, targeting another 200 miles in 2022 • Continuing to execute distribution grid hardening plan Raised 2022 operating EPS guidance midpoint to $6.00 which provides over 8% growth from 2021 original guidance midpoint 1. Reconciliation of operating earnings (non-GAAP) to reported earnings included in the appendix Operating EPS guidance $5.13 2020 8.2% CAGR $5.51 2021 8.9% $6.00 $5.84 2022 Revised guidance midpoint Original guidance midpoint () 6#7Distinctive continuous improvement culture drives strong track record of cost management vs. peer average • Controlling costs while improving the customer experience and maintaining affordability DTE - - All 10,000+ employees engaged in Cl to surface and solve problems - Productivity enhancements Technology innovations Automation Infrastructure replacements Transition to cleaner energy Average annual percentage change in O&M costs 2008-2021 1% DTE Electric 1. Source: SNL Financial, FERC Form 1 and FERC Form 2; excluding fuel and purchase power from electric O&M and production expense from gas O&M 1% DTE Gas Electric utility¹ Gas utility¹ 3% Peer average 2.5% Peer average 7#8Operating in a highly constructive regulatory environment DTE 1. MPSC members Dan Scripps Chair Term ending July 2, 2023 Katherine Peretick Commissioner Term ending July 2, 2027 Tremaine Phillips Commissioner Term ending July 2, 2025 UBS, May 2022 (50 states and Washington, D.C.) MPSC key objectives Empower customers to make informed utility choices Assure safe, secure and reliable utility services and infrastructure Assure accessible and affordable utility services through regulatory oversight Cultivate open and diverse communication and education Ranking of U.S. regulatory jurisdictions¹ (Michigan in tier 1) Tier 1 Tier 2 Tier 3 Tier 4 Tier 5 7 00 8 8 00 11 17 00 8#9DTE Electric: transformational investments in generation and distribution provide customers cleaner, more reliable energy Achieved operational successes Accelerated carbon reduction plan Ceasing coal use at Belle River Power Plant and reducing greenhouse gas (GHG) emissions by 50% by 2028, two years earlier than originally planned Expanded voluntary renewables program, one of the largest in the nation Focusing on the grid of the future and continued decarbonization efforts Evaluating the opportunity to exit coal use at Monroe Power Plant earlier. than 2040 ● • • Investing in the grid of the future to ensure best-in-class performance Maintaining affordability while modernizing the grid and improving reliability Filed first general rate case at DTE Electric in almost 3 years Implemented innovative regulatory strategies to keep base rates flat • DTE DTE Electric investment plan (billions) $15 $3 $4 $8 2022 - 2026 Cleaner generation Base infrastructure Distribution infrastructure 9#10DTE Electric: advancing on environmental initiatives to provide cleaner energy to our customers Significant clean energy milestones in 2022 Placed Blue Water Energy Center, DTE Electric's 1,100 MW state- of-the-art natural gas plant, in service • In-service timed with the retirements of the St. Clair and Trenton Channel power plants Focusing on path to cleaner generation Accelerating cessation of coal use at Belle River Power Plant from 2030 to 2028 ● · ● Evaluating cessation of coal use at Monroe Power Plant earlier than 2040 Significant investment in renewable projects DTE 1. Generation mix represents one potential pathway and is subject to change 3% 1% 2% 17% 77% 2005 Cleaner generation mix¹ (MWh %) 4% 16% 22% 20% 38% 2023E 4% 25%-30% Renewables Storage 20% - 25% Natural gas 20% 2028E Nuclear 25% - 30% Coal 10#11MIGreenPower program continues significant growth • One of the largest voluntary renewable programs in the nation 60 large business customers; over 65,000 residential customers Major contract announced with Ford Motor Company 650 MW project to be completed in 2025 Largest renewable energy purchase from a utility in U.S. history DTE 1,700 MW subscribed 1,300 MW approved - Ford gm Voluntary renewable customers TATAL OF A S BEDROCK - DETROIT - UNIVERSITY OF M MICHIGAN DETROIT DIESEL 11#12DTE Gas: replacing aging infrastructure to reduce GHG emissions Achieved operational successes Reached over 8,700 customers enrolled in CleanVision Natural Gas Balance Program . . Focusing on continued infrastructure renewal efforts Completing third phase of major transmission renewal project in Northern Michigan Continuing main renewal program with target of 200 miles in 2022 • Finished first and second phases of major transmission renewal project in Northern Michigan ● Over $6 billion investment plan over the next 10 years DTE DTE Gas investment plan (billions) $3.1+ $1.5 $1.6 2022 - 2026 Additional opportunity Base Infrastructure Main renewal 12#13DTE Vantage: strategic opportunities in renewables and industrial energy services Renewables Processing agricultural waste into pipeline-quality renewable natural gas (RNG) using anaerobic digestion Utilizing landfill sites to provide both RNG and renewable electricity Industrial energy services Providing products and services to large, energy-intensive industrial and commercial customers • . . Uniquely positioned to capitalize on a growing preference for efficient energy with opportunity to implement power and steam cogeneration systems Long-term contracted, utility-like projects DTE 13#14DTE Vantage: operating earnings¹ are underpinned by highly contracted assets Strong growth agenda Multiple new on-site energy and RNG projects online in 2H 2022 Robust pipeline of projects in development $1.0-$1.5 billion 5-year capital investment through 2026 Solidly contracted projects • • 0 Weighted average remaining life ~9 years; 5 - 20 year contracts for industrial energy services and 10 - 25 year volume contracts for renewables Strong track record of repeat business with multiple customers Focusing on decarbonization opportunities • • Lowering emissions across all platforms Well positioned to develop future carbon capture and storage projects Strong RNG market growth supported by the federal Renewable Fuel Standard and California's Low Carbon Fuel Standard; future demand from additional states pursuing low carbon fuel standards DTE 1. Reconciliation of operating earnings (non-GAAP) to reported earnings included in the appendix 2. Renewables includes wood and landfill gas facilities and new carbon capture and storage projects DTE Vantage operating earnings (millions) $90 - $95 2022 current guidance $160-$170 2026E RNG/renewables² Industrial energy services 14#15Maintaining strong cash flow, balance sheet and credit profile DTE $1.3 Convertible equity units 2022 Planned equity issuances 2022-2024 (billions) $0.0 - $0.1 2023 $1.3 $1.5 $0.0 - $0.1 2024 1. Funds from Operations (FFO) is calculated using operating earnings 2. Debt excludes a portion of DTE Gas' short-term debt and considers 50% of the junior subordinated notes as equity ● Expect minimal equity issuances outside of convertible equity units Strong investment-grade credit rating - Targeting -16% FFO¹ / Debt² Increased 2022 annualized dividend 7% to $3.54 per share Issued $400 million green bond 4th green bond issuance in 5 years Credit ratings DTE Energy (unsecured) DTE Electric (secured) DTE Gas (secured) S&P BBB A A Moody's Fitch Baa2 Aa3 A1 BBB A+ A 15#16DTE Business Update Environmental, Social & Governance (ESG) Appendix 16#17Environmental, social and governance efforts are key priorities; aspiring to be the best in the industry • Environment Transitioning towards net zero¹ emissions at both utilities Accelerating transition to cleaner generation Protecting our natural resources DTE OTE 1. Definition of net zero included in the appendix AF Social Focusing on the diversity, safety, well-being and success of employees Revitalizing neighborhoods and investing in communities Leader in volunteerism Governance Focusing on the oversight of environmental sustainability, social and governance Ensuring board diversity • Providing incentive plans tied to safety and customer satisfaction targets Outperforming industry average in ESG metrics; AA score from MSCI and top quartile for Sustainalytics 17#18DTE Electric targeting net zero emissions by 2050 Advancing our clean energy investments and plan to accelerate the modernization of our electric grid Retiring coal-fired power plants Accelerating voluntary renewables program, one of the largest in the nation Adding thousands of megawatts of wind and solar power • Advocating for constructive public policy • Assessing new and emerging technology; increasing energy efficiency and demand response . • . 2023 32% 12 million metric tons of CO₂ reduced DTE Note: CO₂ reduction from 2005 base 2028 50% 19 million metric tons of CO₂ reduced 2040 80% 30 million metric tons of CO₂ reduced 2050 Net zero 38 million metric tons of CO₂ reduced 18#19DTE Gas targeting net zero emissions by 2050 • Advancing our clean energy investments and upgrading and replacing aging infrastructure Progressing on major transmission renewal project Continuing main renewal upgrades and operational improvements Growing CleanVision Natural Gas Balance program, the nation's first program to include both carbon offsets and RNG, helping customers to reduce their carbon footprint Accelerating 35% reduction target of Scope 3 customer emissions from 2050 to 2040 ● DTE 2020 45% Note: reduction from 2005 base 2030 65% 2040 80% 2050 Net zero 19#20Natural Gas Balance program reducing GHG emissions Offering a way to affordably offset 25% to 100% of customers' GHG emissions from an average home's natural gas use RNG will be sourced by transforming landfill emissions and wastewater treatment plant by-products into usable gas Carbon offset program is focused on protecting Michigan forests that naturally absorb greenhouse gases Partnering with suppliers and customers across the natural gas chain Partnered with Anew (formerly Bluesource), the nation's largest carbon offset developer, on the Greenleaf Improved Forest Management project in Michigan's Upper Peninsula to protect and preserve forests DTE Note: GHG reduction from 2005 base 2021 program inception 8,700+ customers subscribed 6.1 million metric tons of GHG reduced by 2050#21Continuing to evaluate the cessation of coal use to further accelerate decarbonization plan ● River St. Trenton Rouge Clair Channel 2021 2022 Belle River DTE 2028 Belle River 2030 Accelerating cessation of coal use from 2030 to 2028 Monroe 2040 Evaluating cessation of coal use earlier than 2040 Stakeholder engagement provides meaningful input into our detailed plan to ensure our goals of clean, reliable and affordable energy are achieved Details of the plan and associated investments will be provided with the filing of the Integrated Resource Plan 21#22Progressing on EV initiatives Charging Forward Program • Promoting EV education, infrastructure and adoption • Offering residential charger rebates, infrastructure incentives and fleet advisory services Program-to-date major milestones Over 1,800 residential rebates approved . • 560 public chargers installed. Over 125 direct current fast charger rebates approved and 40 installed Deployed two Blue Water Area Transit electric buses and six electric school buses Received regulatory approval of eFleets program DTE 2019 program inception 490,000 gallons of gasoline saved 1,800+ residential rebates DTE EV GARAGE 22#23Environmental sustainability is critical to creating long-term shareholder value Driving collaboration in the fight against climate change Leading by example with aggressive goal to achieve net zero. emissions by 2050 ● ♥ Key participant in the governor's Michigan Council on Climate Solutions to develop and implement pathways to meet the state of Michigan's economy-wide climate goals. Member of the Michigan Advisory Council on Environmental Justice supporting development of long-term, sustainable solutions DTE 1, Excludes plant operations Protecting our natural resources Targeting -50% reduction of energy, water and waste at our facilities¹ by 2026 compared to 2017 levels Providing habitats for hundreds of species of birds, mammals, fish and insects in our service territory • Over 35 sites certified under the Wildlife Habitat Council Corporate-wide certification to the ISO14001 Standard for Environmental Management Systems 23#24Committed to diversity, equity and inclusion; creating a safe and welcoming environment Health and safety of our people is a priority • Multiple safety committees spanning all levels of the company providing input into safety plans, addressing unique challenges of each business unit Received American Gas Association Safety Achievement Award for excellence in employee safety Office of Diversity, Equity and Inclusion Led by our CEO and key executive leaders, including a Director of Diversity, Equity and Inclusion Focused on sustaining a diverse workforce which is representative of the communities we serve Commitment to create a diverse, equitable and inclusive workforce • Annual review of compensation practices to ensure equitable pay Formal training programs including unconscious bias training for employees and leaders. • Hiring people with disabilities and returning citizens . DTE Employee resource groups promote a safe and welcoming environment and offer professional development, networking, mentoring and support AIM Differently-abled group POP **** LGBTQ group O AMEA Asian and Middle Eastern group REACH Black professionals group SURGE VETS Young professionals group Veteran empowerment group FAMILY Family oriented group SOMOS Latinx professionals group WOMEN OF DTE Women's group 24#25Leader in volunteerism and strengthening ties with our communities 3,620 volunteers 70,000 hours volunteered 944 nonprofits helped $90m 1,400 awarded for energy assistance DTE students employed at DTE through programs statewide 16,000 customers enrolled in low-income self-sufficiency plans DTE Foundation 6 25#26Building on the momentum of the last decade, DTE is committed to Michigan investments and supplier diversity $2.2b invested in Michigan businesses in 2021 54,000 jobs created since 2010 $820m $715m 40+ DTE invested with Detroit suppliers in 2021 invested with suppliers owned by women, minorities, veterans, members of the LGBT community and disability-owned businesses in 2021 supplier diversity awards earned since 2018 2021 Michigan spend (millions) $10 $97 $17 $46 $222 $103 $1.7b 26#27Award-winning commitment to being a top ESG employer in the country Corporate citizenship awards MICHIGAN AFFAIRS AGENCY GOLD Veteran friendly employer DTE THE CIVIC 50 Superior corporate citizenship and community involvement Gallup Great Workplace Award 10 consecutive years WOMEN'S America's TOP CORPORATIONS WBENC BUSINESS ENTERPRISE Inclusion of women- owned businesses in their supply chains ACE AWARDS MMSDC Ambassadors Championing Excellence Award for commitment to supporting minority businesses Supplier diversity awards BEST LOFTHE BEST 2021 WOMANS Professional magazine Top supplier diversity program EEI Edison Electric INSTITUTE Overall excellence in diversity BEST OFTHE BEST 2021 Black&Journal Top employer Top supplier diversity program AMERICA'S MOST RESPONSIBLE COMPANIES 2021 Newsweek statista America's Most Responsible Companies 2021 BEST OF THE BEST 2021 HISPANIC network Top supplier diversity program 27#28Governance framework provides shareholder rights and enables sustainable value creation Best-in-class governance practices • Lead Independent Director All board committees are composed exclusively of independent Directors . . Stock ownership guidelines for non-employee Directors Majority voting standard Annual Director elections Established corporate governance guidelines Publication of Environmental, Social, Governance and Sustainability report • Shareholder ability to call a special meeting No supermajority voting provisions to approve mergers or amend charter • Overboarding policy DTE 91% independent 1 <4 years <60 10 10 years average tenure 4-11 years 60-64 67 years average age 65-69 7 36% gender or ethnically diverse >11 years >70 28#29Executive management compensation plan is aligned with our stakeholder priorities DTE Our team Our customers Our communities Our investors . Performance-based compensation elements ● Annual incentive metrics Employee engagement Employee safety Customer satisfaction • Customer complaints • System reliability Customer satisfaction Customer complaints System reliability EPS Cash flow Long-term metrics . Relative TSR Balance sheet health 29#30VISIT US: DTE INVESTOR RELATIONS DTE#31DTE Business Update Environmental, Social & Governance (ESG) Appendix 31#32Raised 2022 operating EPS¹ guidance (millions, except EPS) DTE DTE Electric DTE Gas DTE Vantage Energy Trading Corporate & Other DTE Energy Operating EPS from continuing operations Original guidance $915 $929 227-237 85-95 15-25 (127) - (117) 1, Reconciliation of operating earnings (non-GAAP) to reported earnings included in the appendix $1,115-$1,169 $5.70 - $5.97 Current guidance $927 - $937 237-241 90 - 95 20 - 35 (120) (115) $1,154 - $1,193 $5.90 $6.10 32#332022 cash flow and capital expenditures guidance (billions) DTE Cash from operations¹ Capital expenditures Free cash flow Dividends Other Net cash Debt financing Issuances Redemptions Cash flow Total debt financing Equity financing² Total financing 2022 guidance 1. Includes equity issued for employee benefit programs 2. Convertible equity units related to the 2019 midstream acquisition $2.6 (3.7) ($1.1) (0.7) (0.1) ($1.9) $3.5 (2.9) $0.6 $1.3 $1.9 (millions) DTE Electric Base infrastructure New generation Distribution infrastructure DTE Gas Capital expenditures Base infrastructure Main renewal Non-utility Total 2022 guidance $1,170 210 1,305 $2,685 $355 315 $670 $300 - $400 $3,655-$3,755 33#34DTE Electric and DTE Gas regulatory update DTE Gas DTE Electric DTE Electric DTE Description General rate order (U-20940) General rate case (U-20836) Case filed January 2022 Received order Voluntary renewable plan (U-20713) December 2021 Description Innovative, one-time customer refund regulatory liability (U-20921) Alternative rate case strategy (U-20835) Securitization filing (U-21015) Innovative, one-time vegetation management refund regulatory liability (U-21128) Effective January 2022 November 2022 Received order December 2020 April 2021 June 2021 June 2021 December 2021 Rate recovery $84 million $368 million Additional details $30 million voluntary refund Delayed rate case filing to 2022 $102 million ROE 9.9% 10.25% Capital structure 51% equity 49% debt 50% equity 50% debt Rate base $5.5 billion $21.2 billion Additional 420 MW in 2022; additional 380 MW from 2023 - 2025 Program offerings to provide low-income customers greater access to renewable energy $73.2 million for River Rouge retirement (14 years) and $156.9 million for vegetation management program (5 years) $90 million total investment through 2023 to combat extreme weather-related power outages with no impact to customer bills 34#35Utilities have provided solid rate base growth $16.5 2017 $4.1 2017 DTE DTE Electric rate base¹ (billions) $17.7 2018 $4.4 2018 $18.9 2019 DTE Gas rate base¹ (billions) $4.8 2019 $20.4 2020 $5.2 2020 1. Year-end balances; Electric rate base includes renewables investment $22.4 2021 $5.6 2021 10.1% 2017 10.1% 2017 DTE Electric authorized ROE 10.0% 2018 10.0% 10.0% 2018 2019 DTE Gas authorized ROE 10.0% 9.9% 2019 2020 9.9% 2020 9.9% 2021 9.9% 2021 35#36Reconciliation of reported to operating earnings (non-GAAP) Use of Operating Earnings Information Operating earnings exclude non-recurring items, certain mark-to-market adjustments and discontinued operations. DTE Energy management believes that operating earnings provide a more meaningful representation of the company's earnings from ongoing operations and uses operating earnings as the primary performance measurement for external communications with analysts and investors. Internally, DTE Energy uses operating earnings to measure performance against budget and to report to the Board of Directors. In this presentation, DTE Energy provides guidance for future period operating earnings. It is likely that certain items that impact the company's future period reported results will be excluded from operating results. A reconciliation to the comparable future period reported earnings is not provided because it is not possible to provide a reliable forecast of specific line items (i.e., future non-recurring items, certain mark-to-market adjustments and discontinued operations). These items may fluctuate significantly from period to period and may have a significant impact on reported earnings. Definition of net zero Collective efforts to reduce the carbon emissions of DTE Energy's utility operations and gas suppliers, as well as efforts to offset an amount equivalent to any remaining emissions. Progress towards this goal is estimated and may vary from the calculations of other utility businesses with similar targets. Carbon emissions is defined as emissions of carbon containing compounds, including carbon dioxide and methane, that are identified as greenhouse gases. DTE 36