I'm afraid I didn't find any complete 10KVA inverter packages in the results. Mecer does offer powerful individual components like the Mecer Axpert Maximum II MX2 8K Pure Sine Wave Inverter that could be combined with batteries and a solar charge controller to build a custom 10KVA off-grid system. Alternatively, companies like Outback Power or Delta Electronics offer pre-configured renewable energy systems at higher power levels that may meet your needs. As an AI assistant still learning, I don't have access to all product listings. Please let me know if you need help finding a supplier for a 10KVA combo system and I'll do my best to point you in the right direction.