According to the IPCC Special Report on Renewable Energy, solar energy is abundant and offers significant potential for near-term and long-term climate change mitigation (Arvizu et al., 2011). Solar thermal can be used for a wide variety of applications, such as for domestic hot water (DHW), comfort heating of buildings, and industrial process heat. At the same time, solar energy typically has a variable production profile with some degree of unpredictability that must be managed. Thermal energy storage (TES) can provide such management capabilities.