How Much Does a Solar Battery Cost? (2025–2026 Guide)
Experts expect solar battery prices to continue declining through 2026. Based on data from BloombergNEF and Wood Mackenzie, lithium battery pack costs are projected to
Larger capacity systems generally offer better value per kWh. For example, a 10kWh system might cost $600 per kWh, while a 20kWh system from the same manufacturer could drop to $500 per kWh due to economies of scale in installation and hardware costs.
This includes the cost for the unit, which varies from $6,000 to $12,000 on average depending on the type and size of the battery. It also includes professional labor costs from $1,000 to $2,000 or more for larger or complex systems. All costs listed are before tax credits and incentives, which can lower your solar battery cost by 30% or more.
Experts expect solar battery prices to continue declining through 2026. Based on data from BloombergNEF and Wood Mackenzie, lithium battery pack costs are projected to drop 8–12% year over year, reaching approximately $550–$850 per usable kWh installed by late 2026. Factors influencing 2026 pricing trends include:
These benchmarks help measure progress toward goals for reducing solar electricity costs and guide SETO research and development programs. Read more to find out how these cost benchmarks are modeled and download the data and cost modeling program below.
PDF version includes complete article with source references. Suitable for printing and offline reading.
Download detailed product specifications, case studies, and technical data for our off-grid PV containers and mobile energy storage solutions.
15 Innovation Drive
Johannesburg 2196, South Africa
+27 87 702 3126
Monday - Friday: 7:30 AM - 5:30 PM SAST