By: Mae Cornes Henry Cortes built Core Development Group from a regional energy electric company into a nationally ranked energy engineering, procurement, and construction (EPC) contractor by doing something straightforward but uncommon: staying close to the work, maintaining clients’ trust, and refusing to separate business growth from environmental responsibility. Industry Leading EPC Services Core Development Group was founded in Mahwah, New Jersey, in 2012, and has since expanded its capabilities well beyond its origins in