**Abstract**

Paraffin uses in energy storage depends on preparation by encapsulation method become more effective nonconventional technique novel storge material. Many measurements as hydrophilicity, energy storage capacity, size distribution and encapsulation ratio can be evaluated. It was also found that a higher coating to paraffin ratio leads to a higher paraffin encapsulation ratio. The hydrophilicity value of microencapsulated paraffin depended mainly on the ratio of paraffin to coating the higher the ratio, the lower was its product hydrophilicity Surface response method used to design and based conditions to optimize it. Using paraffin in energy storage in the future is promising.

**Keywords:** energy storage, paraffin, surface response method, phase change material
