The reliability requirement for Concentrated Photovoltaic (CPV) installations is for the system to survive for 25 years in virtually any environment. Classically, some form of thermal epoxy has been used as the Thermal Interface Material (TIM). This material is usually a filled epoxy that provides some level of thermal transfer, yet can still withstand multiple thermal cycling excursions. These epoxies result in poor thermal conductivity which prevents migration to higher concentration levels and greater efficiencies. As such, epoxies may run into problems as CPV concentrations exceed 1000 suns. This mix of materials will provide insufficient reliability to achieve the 25 year lifetime requirement.