**4. Conclusion**

A glass greenhouse pilot plant for microalgal culture fitting to temperate climate was designed based on 3D modeling designing BIM technology in KIOST. The bottom of the raceway system was placed 600 mm deep into the ground, and culture depth was kept at 400 mm, so that heat energy was efficiently stored in order to maintain thermal effects for a long time, and its structure was helpful in maintaining optimal temperature even in the winter. *S. maxima* was continuously cultured for a year in batch culture without further supply of nutrients, and the raceway system with a glass greenhouse structure in the present chapter achieved the maximum aerial productivity compared with most previous studies.
