The different types of lipids are triglycerides, sterols, and  phospholipids. Triglycerides include many fats and sterols,  including cholesterol.A phospholipid consists of … two fatty acids,  glycerol, and a phosphate group.riglycerides are important for metabolism and production of energy. Fatty acids are used to make lipids in cells, attatch to phosphate groups to form phospholipids, and they are used for storage. Phospholipids are the main part of cell membranes and assist in regulating cell environment.