Bhavesh Rathod developed and enhanced battery degradation modeling, tariff analytics, and backend reliability for the NREL/REopt.jl and NREL/REopt_API repositories. He implemented segmented battery degradation logic, enabling per-segment tracking and more accurate asset lifespan forecasting using Julia and Python. His work on electric tariff modeling introduced expanded outputs and integrated cost structures, supporting improved decision-making for energy storage planning. Bhavesh also stabilized backend workflows by addressing database migrations and summary generation reliability in Django, while maintaining robust documentation and version control. His contributions reflect a deep focus on modeling accuracy, data integrity, and maintainable, testable software engineering practices.