Case Study: Columbus Water Works achieves renewable cogeneration and energy savings with Cummins

Columbus Water Works - Customer Case Study

Columbus Water Works, the municipal utility serving more than 230,000 residents in Columbus, Georgia, wanted to turn waste gas from its wastewater treatment process into usable energy at its South Plant. The utility needed a cogeneration solution that could convert biogas into both electricity and thermal energy, while also fitting into its existing operations and reliability requirements.

Cummins supplied two 1.75 MW C1750 N6C lean-burn generator sets with dual-fuel capability, a DMC300 management system, remote monitoring, switchgear, and waste heat recovery equipment. The system enables Columbus Water Works to produce 3.5 MW of base-load renewable cogeneration power and island-mode emergency power, operating about 4,000 hours per year and saving the utility hundreds of thousands of dollars by avoiding a costly switchgear rebuild.

Columbus Water Works