SEPCO has indicated that the power grid in Jordan has had difficulty covering peak loads observed during high-temperature periods. As a result, SEPCO has reviewed potential solutions for its Rehab Power Plant, a combined cycle power plant with capacity of 300 MW utilizing GE9E gas turbines, to increase power plant generation. For producing peak power output, SEPCO considered adding a fogging system. SEPCO also considered rehabilitating the gas turbine units by installing the Advanced Gas Path (AGP) parts. SEPCO engaged K&M Advisors to evaluate the technical and commercial viability of the fogging system and AGP installation, including review of the design of generating units’ and auxiliary equipment and systems to evaluate their ability to support the increased power output during fogging system and AGP operation.

K&M developed GateCycle models of combined cycle plants to calculate heat and material balances for different ambient temperatures without and with the fogging system. For each combination of the ambient temperature, fogging system status, and AGP status, K&M developed a spreadsheet summarizing the system power output and power output increase, heat rate and heat rate change, fogging system evaporation rate/demineralized water requirements, and other steam and water impacting operation of HRSG, steam turbine, ACC, and other auxiliary equipment that could be impacted by the fogging system. To analyze the demineralized system requirements, K&M calculated the fogging system demineralized water requirements and the total daily demineralized water demand and compared it with the demineralized water system capacity.  K&M also conducted an economic analysis to determine whether installation of the fogging system, AGP, or both is economically justified.