Business news in brief

Peco Energy Co.'s parent company, Exelon Corp., reached an agreement Tuesday with Washington Mayor Muriel Bowser on its proposed $6.8 billion merger with Pepco Holdings Inc., resurrecting a deal that District of Columbia regulators nixed in August. Exelon agreed to invest $78 million in the nation's capital, up from the $14 million it had previously proposed, according to the mayor's office. The District of Columbia Public Service Commission has scheduled a Wednesday vote. The merger already passed muster in New Jersey, where Pepco operates Atlantic City Electric Co., and in Delaware and Maryland, where it owns Delmarva Power. Exelon would become the nation's biggest utility by customer count if the merger were approved. - Andrew Maykuth

Valley Forge-based AmerisourceBergen Corp. plans to buy closely held PharMEDium Healthcare Holdings Inc. for about $2.58 billion to expand as a supplier of compounded sterile preparations, which are medications that have been mixed for individual patients. The purchase of the business from Clayton, Dubilier & Rice is targeted for completion by the end of December, and will add 22 cents to 26 cents to adjusted net earnings per share in fiscal 2016, AmerisourceBergen said in a statement. PharMEDium makes about 2,000 products for 3,000 hospital customers, and the deal will increase Amerisource-

Bergen's drug offerings, which are the biggest part of the Chesterbrook-based distributor's business. The deal should close by the end of this year, AmerisourceBergen said, and will save about $30 million in costs by fiscal 2018. - Bloomberg News

The Nonprofit Repositioning Fund will be launched this month to help local nonprofits seek formal collaborations, partnerships or even mergers. The fund has committed $1.42 million over three years to nonprofits based or operating within the Philadelphia region. Philanthropy Network will act as host on behalf of the eight funders of the project: North Penn Community Health Foundation; Samuel S. Fels Fund; the Scattergood Foundation; Barra Foundation; Philadelphia Foundation; United Way of Greater Philadelphia and Southern New Jersey; William Penn Foundation; and the Lodestar Foundation of Phoenix. The new fund will make grants to support technical assistance and costs associated with repositioning two or more nonprofits serving Bucks, Chester, Delaware, Montgomery and/or Philadelphia Counties. - Erin Arvedlund

Penn Virginia Corp., the Radnor oil and gas producer, has sold some "non-core" oil-producing leases in the Eagle Ford Shale formation in Texas to an undisclosed buyer for gross cash proceeds of $13 million. The divested properties in Gonzales County include three wells with net production of 250 barrels of oil equivalent a day, approximately 950 net developed acres and estimated mid-year 2015 proved developed reserves of approximately 595,000 barrels. Penn Virginia, which has been shedding assets in response to low oil prices, said the properties are a "significant distance" from its main leasehold of 100,400 net acres in southern Texas, including about 52,500 undeveloped acres. - Andrew Maykuth

The United Auto Workers union notified Fiat Chrysler Automobiles NV that it intends to strike at 11:59 p.m. on Wednesday. Fiat Chrysler and the UAW resumed negotiations on a new labor contract after about 65 percent of UAW members voted against a proposed pact that would have granted raises to all employees and narrowed the pay gap for second-tier workers. Fiat Chrysler spokeswoman Jodi Tinson confirmed the strike notice in an email. The UAW posted its letter to the company on the union website. The Fiat Chrysler agreement would have boosted hourly base wages over the contract term to $29.76 at the senior tier and as much as $25.35 for the second tier, according to the UAW. The ratification bonus would have been $3,000. The automaker also had pledged to invest as much as $5.3 billion in the U.S. - Bloomberg News

The head of Amtrak warned Congress that some passenger rail service outside the Northeast corridor will be suspended if lawmakers don't extend a Dec. 31 deadline for railroads to install safety technology. "There will be significant impacts to our service and on our customers and tenant railroads," chief executive officer Joseph Boardman said in an Oct. 5 letter to Sen. John Thune (R., S.D.), chairman of the Senate Commerce Committee. "The potential economic impacts would also be substantial." Under current law, railroads have until Dec. 31 to install technology that can automatically slow or stop trains to prevent crashes. Known as positive train control, the technology is installed on trains and rail infrastructure. Safety officials have said that the equipment could have prevented a fatal Amtrak accident in Philadelphia in May. - Bloomberg News

Twitter is on a feature launch roll, with the social network releasing a "Moments" that curates and promotes popular tweets. The feature, which is now available both on the desktop and mobile versions of the platform, appears as a tab between a user's notifications and messages. Clicking or tapping on the tab opens a list of "Moments," which are a curated selection of tweets ranging from breaking news to cute animal pictures. - Los Angeles Times