 As temperatures soar, Greenville residents rely heavily on air conditioning to stay cool, prompting concerns about the strain on the power grid. High schooler Colton Harris says he keeps his thermostat at a cool 68 year round. 68 all year round, I get hot really easily and that's just my magic number right there. Greenville Utilities Commission, serving about 85,000 customers across eastern North Carolina, they have what's known as a beat the peak program.