Duke Energy (NYSE: DUK) has been ranked No. 1 among U.S. utilities for investor transparency by an independent financial communications firm. Labrador Advisory Services reviewed the proxy statements, 10-K filings and website investor pages of the nation’s 250 largest companies, based on market capitalization. The firm ranked Duke Energy’s investor disclosures No. 1 for transparency among the nation’s utilities – and No. 16 among all companies – based on quality and completeness of information. “Duke Energy takes transparency and disclosure seriously,” said Kodwo Ghartey-Tagoe, Duke Energy executive vice president and chief legal officer.