A developer compares options for a 600-kW open-field plant on one flat site with uniform sun, three-phase service, and a central electrical room for easy service access. Which inverter comparison correctly matches string, micro, multimode, and central inverters to this project?

A central inverter is the strongest match for this 600-kW open-field plant: a large three-phase unit consolidates conversion for a utility-scale block, and locating it in the central electrical room supports the stated preference for easy service access. Three-phase string inverters are a legitimate modular approach at this scale, offering distributed conversion, MPPT flexibility, and redundancy; however, placing units in field blocks conflicts with the specific advantage of having service access centralized in the electrical room. Microinverters provide genuine module-level conversion, monitoring, and fault isolation, but their fine-grained MPPT is of limited value when sunlight is uniform across the array; the scenario gives no mismatch or shading condition that calls for that feature. Multimode inverters can serve grid-connected systems with battery charging and islanded backup, but those functions add storage-oriented capability that the project does not call for, rather than matching its stated utility-scale conversion and service priorities. Exam caveat: string and central architectures can both be appropriate for large plants, so the best match depends on layout, maintainability, and design priorities—not capacity alone. Practical check: confirm the selected inverter’s three-phase rating, grid-interconnection compliance, service clearances, and access route within the electrical room.