Switzerland’s residential battery market is growing fast. Around half of new photovoltaic installations are now paired with storage, according to Swissolar. Falling battery prices, lower payments for surplus solar power and the prospect of more flexible electricity tariffs are all helping to drive demand. But popularity should not be confused with profitability.
In Switzerland, solar power already supplies about 14% of electricity demand. That creates a new problem: what to do with the surplus, when on sunny days generation exceeds consumption. Batteries offer one answer. More owners of single-family homes are pairing photovoltaic panels with storage, allowing excess power generated during the day to be used later. Used intelligently, these batteries can attenuate peaks in demand and ease pressure on the grid. Unfortunately, the economics still don’t work.
Swissolar’s 2025 report says the average installed battery price in Switzerland had fallen to about CHF 800 per kWh by late 2024. Even so, most installers surveyed thought prices of only CHF 300-600 per kWh would make batteries economically attractive.
A typical 10 kWh system, Swissolar estimates, costs CHF 6,400 for the equipment and another CHF 1,300 to install. On generous assumptions about lifetime and efficiency, the storage cost alone comes to 14.5 centimes per kWh. Once the value of the solar electricity used to charge the battery is included, the saving relative to buying power from the grid becomes modest.
Smaller batteries may suit ordinary households better, but they suffer from the high fixed costs of red tape and installation. Planning, installation and administration account for roughly 40% of the final price of a Swiss battery system. That makes a small unit relatively expensive per kWh, even if it is better matched to a household’s evening consumption.
For a typical single-family home, even a well-sized battery may take well over a decade to pay for itself—and considerably longer once degradation, financing costs and Switzerland’s weak winter solar output are taken into account. The economics improve when grid electricity is expensive, feed-in tariffs are low, solar surpluses are frequent and evening demand is high. In winter, however, there may be little or no daytime surplus to store for use after sunset, leaving the battery idle and producing no financial return.
So why are Swiss households buying batteries despite the uncertain returns? Swissolar finds that the main attraction is greater energy independence; improving the profitability of a solar installation ranks lower. For many Swiss homeowners, a battery is viewed as buying autonomy rather than as a financial investment.
That may change. Battery prices are falling, and cheaper installation would improve the sums further. So, too, could payments from grid operators for using household batteries to balance supply and demand—from 2026, Switzerland eliminated the double charging of grid fees on electricity stored and subsequently returned to the grid. This may help. Any combination of lower costs and new revenues would shorten payback periods and make storage easier to justify on financial grounds.
Some European countries with higher rates of battery adoption have helped create that market through subsidies. In Germany, where generous support schemes helped accelerate uptake, batteries are now installed alongside about 84% of new solar systems.
For now, claims that residential batteries in Switzerland have become profitable are premature despite the recent enthusiasm of some Swiss homeowners. Those looking for bang for buck will need to wait.
More on this:
Swisssolar report (in German)
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