 Phase change materials, PCMs, have been used for decades to store thermal energy from solar sources. These materials are capable of absorbing releasing large amounts of heat at specific temperatures, making them ideal for applications such as solar power generation, water heaters, solar cookers, and solar dryers. This paper reviews the current state of research into the use of PCMs for these applications, providing valuable insight into their potential for commercial development. This article was authored by Emil Fieger, Tokomora Indramalia, Aridina Susan Silatanga, and others.