Sajith Wijesuriya

Postdoctoral Researcher-Mechanical Engineering


Sajith joined NREL in 2020 and works in the Building Energy Science Group as a post-doctoral researcher. He works on whole-building energy simulations with a focus on implementing thermal energy storage and grid flexibility strategies. Sajith also works on modeling studies to increase the building energy resilience against different weather situations.

Research Interests

Thermal energy storage

Grid-responsive buildings

Whole-building energy modeling

Buildings resilience


PhD, Colorado School of Mines, Golden, CO

MSc, Colorado School of Mines, Golden, CO

BSc, University of Moratuwa, Sri Lanka

Featured Work

Building energy efficiency and load flexibility optimization using phase change materials under futuristic grid scenario, Journal of Cleaner Production (2022)

Empirical validation and comparison of methodologies to simulate micro and macro-encapsulated PCMs in the building envelope, Applied Thermal Engineering (2021)

Empirical validation and comparison of PCM modeling algorithms commonly used in building energy and hygrothermal software, Building and Environment (2020)

Parametric analysis of a residential building with phase change material (PCM)-enhanced drywall, precooling, and variable electric rates in a hot and dry climate, Applied Energy (2018)