A 10kW solar battery system typically costs between $7,000 and $18,000 installed in 2025, depending on the brand, battery chemistry, and installation complexity. This credit can reduce a $12,000 system cost to $8,400, representing $3,600 in savings that may not be available in 2026. The average price for a full 10 kW solar system, including installation, is $16,870 to $30,000 after federal tax incentives. Consider energy savings and reputable sources when. The Enphase Ensemble Encharge 10 battery is reliable, smart, simple, and safe. It provides the lowest lifetime energy costs with backup capability for both new and retrofit solar customers.