A new 1-MW rooftop solar installation on the World Cruise Center at the Port of Los Angeles relied on a self-ballasted racking system to protect aging structures while offsetting increased electrical demands from an Alternative Maritime Power system that lights up docked cruise ships. Photo: Courtesy of Cupertino Electric A monocrystalline photovoltic system held in place with a concrete- ballasted roof will supply 1 MW of power to the Port of Los Angeles World Cruise Center. Photo: Courtesy Port of Los Angeles Crews installing panels worked around cruise ships’ schedules. Of the five bidders vying for the $8.5-million contract in
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.