More than 500 people are expected to rally at 5:30 p.m. on April 10 in front of Glendale City Hall, 613 E. Broadway, Glendale, to oppose a proposed $500 million expansion of the Grayson Power Plant.

“The fact that Glendale is even considering approving a $500 million gas plant without first getting the facts about clean energy options is hugely disturbing,” said Dan Brotman of the Glendale Environmental Coalition (GEC), which is organizing Tuesday’s rally. “Evidence from around California proves there are viable alternatives to gas that are cleaner, more reliable, and less expensive.”

State Sen. Anthony Portantino (D-Pasadena) and Assembly member Laura Friedman (D-Glendale) have recommended the plan be shelved.

Friedman, a former Glendale council member, called for the project to be stopped in an op-ed piece she wrote for the Glendale News-Press in January.

“When fully operational, [the plant] would provide 310 megawatts of power at any given moment. Glendale Water & Power projects that local demand for electricity is falling (even with the anticipated rise of electric vehicles) to 300 megawatts by 2035. This power plant alone would provide more power than the city needs,” Friedman wrote.

According to Brothman, Glendale officials recently endorsed the National Mayors Climate Action Agenda, which would disapprove of a plant that would increase citywide carbon emissions by as much as 25 percent.

Neighboring Pasadena recently approved a plan that would cut carbon emission in half by 2030.

According to GWP’s final environmental impact report (EIR) released in March, sulfur oxides and nitrous oxides, both common pollutants emitted by natural gas plants, will increase up to 2.8 to 5.4 times from current levels.

Some studies claim these pollutants are responsible for a wide range of health impacts, including cancer, asthma, heart disease, kidney disease, and dementia.

Numerous studies have shown these pollutants also have significant impact on children, causing lowered IQ scores, gross motor coordination damage, impaired cognitive function and other neurobehavioral disorders.

“We are proposing to rebuild substantial portions of the plant by taking old generating units out of commission, dismantling them, and building new, modern units in their place,” officials state on the city’s website. “This process is called repowering. The new repowered units will be cleaner, more energy efficient, and will greatly increase the reliability of the Glendale’s power grid.”