September 2025 delivered across NREL/REopt_API and NREL/REopt.jl: robust dependency management, expanded data modeling for thermal storage, and richer run reporting, paired with improvements in parameter semantics and repository hygiene. These changes strengthen business value by improving data fidelity for storage sizing, enhancing decision support through more actionable reports, and increasing deployment stability and maintainability. Key outcomes: - End-to-end feature delivery across two repos with clear traceability to commits and impact on API compatibility and data modeling. - Early-stage improvements that reduce deployment friction and enable faster onboarding for contributors. - Documentation and code hygiene improvements that reduce future maintenance burden.

August 2025 highlights: Delivered stability, accuracy, and data enhancements across REopt.jl and REopt_API, enabling more reliable CST simulations, better sizing decisions, and a streamlined data/model framework for HighTempThermalStorage. Key outcomes include robust CST input handling when tech_type is missing or invalid, dynamic maximum process heat load sizing for q_pb_design, and expanded scenario data support with cst_tes.json. API integration improvements aligned CSP input validation with updated CST defaults and pinned REopt.jl dependencies for stability on the add-cst-reopt branch. In addition, renamed and standardized HighTempThermalStorage data models, and consolidated database migrations to improve maintainability and future migrations. Collectively these changes reduce simulation errors, improve sizing accuracy, accelerate scenario analysis, and establish a scalable foundation for future storage technologies.

July 2025 monthly summary focusing on key accomplishments, business value, and technical achievements across NREL/REopt.jl and NREL/REopt_API. Highlights include improved thermal production normalization accuracy (run_ssc), testing infrastructure overhaul, and API/model migrations with packaging updates. These efforts increased modeling reliability, CI robustness, and maintainability, delivering tangible business value in more accurate energy simulations and smoother deployment pipelines.

May 2025 monthly summary for NREL/REopt_API: Expanded thermal energy capabilities by delivering CST integration, a new Hot Sensible TES model, and an aligned library upgrade. These changes enable end-to-end CST data handling, enhanced TES support, and better alignment with the latest modeling library, strengthening decision-support for solar-thermal deployments and improving API reliability for future features.

April 2025 performance summary: Delivered robust solar input defaults and q_pb_design handling across REopt.jl and CST, expanded CST integration in REopt_API, and strengthened GHP modeling and testing. The work focused on increasing safety and reliability when inputs are incomplete, enriching CSP-related modeling outputs, and improving test coverage and maintainability.

March 2025 performance summary for NREL/REopt.jl. Delivered consolidated CST/PTC modeling input handling, validation, and testing enhancements to improve robustness, webtool alignment, and testing workflows for solar thermal simulations. Major bug fixes and hardening focused on input validation, distance between CST and PTC models, and error handling across CST-related components. Overall impact: more reliable simulations, faster validation cycles, and improved maintainability with clearer input mappings and defaults.