Thanks for considering Fortress Power Battery for your project! 

Looks like you are in the initial design stage for your PV system. 

1. Load Requirements: To accomplish this you will first need to do a comprehensive Load Analysis to determine the total anticipated electrical load in Power (Watts), Surge Power (Watts), and Energy (kWh). 
   
2. Inverter: Once you have determined the anticipated electrical load Power (Watts), Surge Power (Watts), and Energy (kWh), you can then select an Inverter that is capable of supporting these requirements. Depending on your installation needs, Fortress Power provides a great solution the the Envy True 8kW, 10kW, and 12kW models. We have strong closed loop communication with our eFlex and eVault Max batteries. The Envy Inverter is capable of running PV, Batteries, and generator with 2-wire start capability.
   
3. Battery: Then, with your Energy (kWh) requirements known, you will size your battery. At this time Fortress Power has dependable eFlex 5.4kWh and eVault Max 18.5kWh batteries that can be paralleled for a considerable amount of energy storage.
   
4. PV Array: At this point you will be sizing your PV array. The size in watts of the PV array is dependent on your Energy (kWh) calculation, sunlight available at your location, amount of space to install a PV array, utility restrictions, and $$ budget limits.
   
5. Design: Once you have all of this figured out, you will be able to design a PV system with energy storage that will satisfy your needs.