Mansfield Energy Corp. of Gainesville has acquired Ohio-based energy supplier The R.W. Earhart Company. Earhart’s office in Troy will become a Mansfield regional office to serve customers in Ohio and Indiana, a Mansfield press release states. “We are very pleased to welcome Earhart into the Mansfield family,” said Michael F. Mansfield Sr., Mansfield’s CEO, in the release. “Earhart is an impressive, large regional company that has been exceptionally well run, serving key markets in our industry.