A 9.99kW Solar System is typically comprised of between 26 and 34 solar modules (however it will depend on the capacity that the modules and you will require only 27 of the 370W sun panels for 9.9kW of power) 9.9kW) along with an inverter of 8kW or 10kW. Visit Link - https://rescomsolar.com.au/the-ultimate-guide-for-9-99kw-solar-system/