1925: DP&L becomes a full-service gas, electric, steam and water utility through its acquisition of the Dayton Gas Company, which complements its 1914 purchase of the Wilmington Water Company.
1946: Ground is broken on the O.H. Hutchings Station in Miamisburg.
1952: DP&L debuts the nation’s first fluorescent street lighting in Oakwood.
1960s: The J.M. Stuart Plant – at the time of its completion the largest coal-fired power plant in the world – uses new, super–critical, high-pressure turbines.
1971: DP&L installs the first coal-dust collection equipment in the nation, greatly reducing emissions from its power plants.
2000: DP&L sells natural gas unit to Vectren Corp. of Indiana for $425 million.
2001: DP&L reportedly looking for a purchaser. Company shortly thereafter takes itself off market.
2003: DPL Inc. agrees to pay $145.5 million to settle 11 state and federal shareholder lawsuits related to its $1 billion investment portfolio and Ex-Chairman Peter H. Forster. The lawsuits allege federal securities fraud, self-dealing and breach of duty, but under the agreement, DPL directors and executives admit no wrongdoing. The settlement came after five weeks of negotiations, which began just as one of the lawsuits was set to go to trial. Plaintiff attorney Stanley Chesley said evidence would show that Forster and other top executives engineered the sale of DPL’s gas business to Vectren and handed significant control over DPL to a New York investment firm to increase his personal wealth.
2006: DP&L sells a natural gas peaking plant for $102 million to Columbus Southern Power Co.
2010: The 1.1 Megawatt Yankee Solar Array in Washington Twp. – at the time of its completion the largest solar power facility in Southwestern Ohio – annually generates the equivalent to what’s needed to power 150 homes in a year.
2011: Sold to global power giant AES.