2015-10-26 f08a4fc108cceb4e8f92b796cc1e065ca63b5d4b 14 Duke Energy 1 /wiki/duke%20energy Piedmont Natural Gas 13 /wiki/piedmont%20natural%20gas Duke Energy Piedmont Natural Gas Duke Energy /feed/2015/10/26/duke-energy-announced-it-would-buy-piedmont-natural-gas-for-49-billion Reuters 26 2c36bc9a0b7131540146c90d159948e7993c4d6a 10 https://www.reuters.com/article/2015/10/26/deals-day-idUSL3N12Q3NW20151026 2015 Duke Energy announced it would buy Piedmont Natural Gas for $4.9 billion.