For a 30 kW project, expect total installed costs to fall in the following bands, before incentives: Low roughly $54,000 to $60,000, Average around $82,500 to $105,000, High about $120,000 to $165,000. Per-watt figures translate to roughly $1. 50/W depending on. The price of a 30kW solar system ranges between 60,000and60,000and90,000 before incentives. This includes panels, inverters, mounting hardware, and installation. Battery Storage Add-On: Adding a 30kW battery storage system (e. If you want the price of a lithium battery design, please click on the product page of the corresponding model to find out. Below are the product parameters and. Generating 30 kW of solar power involves various costs, including installation expenses, equipment procurement, and maintenance fees, which can vary greatly depending on several factors.