Swissolar Reports Solar Battery Storage Capacity to Reach 2.5 GWh in 2026 with Decreasing Costs

The capacity of solar battery storage systems in households and businesses is projected to reach nearly 2.5 GWh by the end of 2026, nearly doubling from the previous year. According to Swissolar's 'Batteriemonitor,' capacity rose from 896 GWh in 2024 to 1451 GWh in 2025. Additionally, the cost of a typical 15 kWh home storage system has decreased to approximately 8,800 CHF, a 25% reduction from last year. The report highlights the growing role of storage systems in enhancing solar energy production and stability in the grid.

Published Mar 21, 2026

Swissolar's 'Batteriemonitor' reveals that solar battery storage capacity is expected to hit 2.5 GWh by the end of 2026, up from 896 GWh in 2024 and 1451 GWh in 2025. This represents a significant increase in installations, nearly doubling in one year.

AI-curated by Theia

The report also notes a 25% decrease in costs for a typical 15 kWh home storage system, now priced around 8,800 CHF. Storage systems are crucial for flexibility in solar energy production and consumption, allowing excess energy to be stored for later use. Furthermore, major grid-connected storage systems are also expanding, with plans for over 4 GWh of additional capacity by 2030.