Glenarm

Pasadena Water and PowerLos Angeles CountyCAISO

Glenarm is Pasadena Water and Power’s gas-fired generating station on a 14-acre site in Pasadena, California, with units in operation since 1906. GT-1, GT-3 and GT-4 remain in service beside GT-5, a 71-MW GE LM6000 combined cycle unit that replaced the 1965 B-3 boiler and steam unit and was celebrated at a February 2017 ribbon-cutting. The plant covers local shortfalls when imports are limited, and the city approved a 25-MW battery storage project on the site in March 2025.