Required to supply glycerol-3-phosphate in the chloroplast for the synthesis of glycerolipids. NAD(+) + sn-glycerol 3-phosphate = dihydroxyacetone phosphate + H(+) + NADH Membrane lipid metabolism; glycerophospholipid metabolism. Belongs to the NAD-dependent glycerol-3-phosphate dehydrogenase family. Sequencing errors.