Develop system architectures and conceptual designs for PV-plus-storage plants, including DC and AC block configurations, LV and MV collection, single-line diagrams, and grounding concepts, built for the reliability demands of off-grid data center loads. Write technical specifications, RFP technical scope, and evaluation criteria for modules, batteries, PCS and inverters, transformers, and MV switchgear, and lead technical review of vendor proposals, submittals, and deviations.