The company is requesting bids from solar, wind, biomass, landfill gas and other plants that qualify as a renewable energy resource, excluding swine and poultry waste.
Facilities must be situated in the DEC service territory.
A state law requires the company to generate 12.5% of its retail sales through renewable energy or energy efficiency programs by 2021.
The company says 750,000 megawatt-hours is equivalent to what 400MW of solar capacity generates in a year, enough to supply energy to about 62,000 homes.
Duke Energy Renewables and Distributed Energy Technology president Rob Caldwell said: "We want to encourage market development of more renewable generation in the Duke Energy Carolinas system in the most competitive manner possible.
"This RFP gives developers the opportunity to either pursue projects themselves or sell current projects under development to Duke Energy."
Currently, around 75% of Duke Energy's owned and purchased solar generating capacity is in the Duke Energy Progress (DEP) territory.
Duke Energy companies, both regulated and commercial, have installed around 450 MWs of solar energy in North Carolina, about 35 solar facilites.
Image: Duke Energy Carolinas (DEC) issued a request for 750,000 megawatt-hours (MWh) of energy located in its territory. Photo: Courtesy of Duke Energy Corporation.
