DTE Electric Company
American electric power company
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| 2024 | DTE Energy announced the transformation of the former Trenton Channel Power Plant site into a 220 MW battery energy storage center, marking a significant investment in renewable energy infrastructure. The project is planned to be developed between 2024 and 2026 in Wayne County. |
| 2024 | Increased investment in renewable energy assets to $4.8 billion, continuing the company's commitment to clean energy development. |
| 2024 | Planned turbine replacement project at Greenwood Energy Center expected to add 25 more years of useful life to the facility. |
| 2023 | DTE was ordered to pay $25 million in customer credits following extended outages, and the Michigan Public Service Commission mandated a comprehensive infrastructure improvement plan. |
| 2023 | DTE Energy announced a $150 million environmental upgrade project for the EES Coke Battery Facility in response to regulatory pressure and community concerns about environmental and health impacts. |
| August 2023 | Severe storms caused DTE's second-largest outage event in company history, with more than 775,000 customers losing power. Some residents remained without electricity for up to eight days, prompting public outcry and regulatory investigations. |
| February 2023 | An ice storm left approximately 600,000 DTE customers without power, with restoration times exceeding seven days for some customers in below-freezing temperatures. |
| 2022 | A shareholder proposal requesting enhanced disclosure of political contributions received 43% support at the annual meeting. |
| 2022 | The EES Coke Battery Facility was fined $1.8 million for air quality violations and was mandated to install additional pollution control equipment. |
| 2022 | End of a documented period revealing significant health impacts from the EES Coke Battery Facility's ongoing industrial emissions, including a 56% rise in emergency room visits for respiratory issues affecting local minority and low-income neighborhoods. |
| 2022 | Trenton Channel Power Plant and St. Clair Power Plant were retired and replaced by renewable energy projects. |
| December 8 2022 | Announced retirement plans for Monroe Power Plant: units 3 and 4 to retire in 2028, units 1 and 2 to retire in 2032 (revised from original 2042 plan). |
| June 6 2022 | Blue Water Energy Center began commercial operation, a natural gas combined-cycle plant that will replace three retiring coal plants and reduce carbon emissions by 70 percent. |
| 2021 | DTE Energy temporarily suspended some political contributions following the January 6 Capitol riot, but resumed them later that year. |
| 2021 | University of Michigan conducted a study revealing elevated levels of respiratory problems in neighborhoods surrounding the EES Coke Battery Facility. |
| August 2021 | Successive storms resulted in more than 500,000 power outages, with some customers experiencing up to five separate outages within a single month. |
| June 2021 | During a heat wave, DTE experienced equipment failures at multiple substations, causing rolling blackouts that affected 265,000 customers in the Metro Detroit area when temperatures exceeded 95°F (35°C). |
| May 31 2021 | River Rouge Power Plant produced its last megawatt and was formally retired on June 4, 2021. |
| April 2021 | DTE Electric expanded its renewable energy portfolio to 18 wind parks and 31 solar parks, totaling 1,760 megawatts of clean energy and powering 670,000 homes. |
| 2020 | EPA conducted an investigation that discovered multiple Clean Air Act violations at the EES Coke Battery Facility. |
| 2019 | A Detroit News investigation revealed DTE had channeled over $800,000 through nonprofit social welfare organizations to support specific ballot initiatives without direct disclosure. |
| 2018 | DTE Energy began publishing annual political contribution reports detailing its political spending and lobbying activities. |
| 2018 | Michigan Department of Environment, Great Lakes, and Energy (EGLE) issued violations against the EES Coke Battery Facility for exceeding permitted emission limits. |
| July 2018 | DTE Energy filed a proposal to invest $13 million into the Charging Forward electric car charging program, which aimed to upgrade transformers, provide service drops, and offer consumer rebates. |
| 2016 | DTE Energy and its affiliated donors began a significant period of political contributions, ultimately contributing over $1.4 million to state-level candidates and committees by 2020. |
| 2016 | DTE Energy announced the retirement of three coal-fired generating units at plants in River Rouge, St. Clair, and Trenton, which collectively power around 900,000 homes. |
| May 2016 | Broke ground on the Lapeer Solar Park, which was touted as the largest utility-owned solar array east of the Mississippi River, capable of powering 9,000 homes. |
| 2015 | Beginning of a documented period showing a 56% increase in emergency room visits for respiratory issues related to EES Coke Battery Facility's environmental pollution in Southwest Detroit and surrounding communities. |
| 2012 | DTE Energy spent approximately $11.6 million opposing Proposal 3, which would have mandated 25% of Michigan's electricity come from renewable sources by 2025. |
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