LIGHT = ACTION Solar One, a solar-powered building located on a two-acre plot along the East River, presents the Solar-Powered Film Festival. “This Land Is Your Land,” a documentary by Lori Cheatle and Daisy Wright about Americans who have resisted or fought corporations for various reasons, begins the series (Tonight, 8:45 p.m.). Director Albert Maysles discusses his documentary “Grey Gardens,” about two cousins of Jackie Onassis who live in a ramshackle mansion in the Hamptons (Thursday, July 7, 8:45 p.m.). Thursday, tonight through Thursday, July 28, Thursdays, 8:45 p.m., Stuyvesant Cove Park, at East 23rd Street and FDR Drive, 212-688-4800, $6 donation.

SAVING LOVE, FIGHTING DICTATORS El Museo Del Barrio presents “El Cometa,” a Spanish-language film set in early 20th-century Mexico. A young couple fights to save their romance amid their attempts to aid Francisco Madero’s antidictatorial movement. English subtitles. Saturday, 2 p.m., El Museo Del Barrio, 1230 Fifth Ave. at 104th Street, 212-831-7272, suggested admission: $6 general, $4 students and seniors, free for children under 12.

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