Solar installation with battery storage: costs, benefits and how it works
Battery storage lets you use the solar electricity you generate yourself even in the evening and at night — instead of feeding it into the grid.
70%
Self-consumption possible
8–15 kWh
Typical storage size
25–40k
CHF total cost
Self-consumption compared
Average values for a detached house with a 10 kWp solar installation
How it works
How does a solar installation with battery storage work?
A photovoltaic installation generates electricity from solar energy during the day. This is first used directly in the household — for appliances, lighting or heat pumps.
If the installation produces more than is currently needed, the battery storage automatically stores the energy. In the evening or at night, it releases it again. An intelligent controller ensures optimal distribution.
Solar installation
Storage
Household
Why it's worth it
The benefits of battery storage
Without storage, only 30% of the solar electricity produced is used directly. With storage, this figure rises to 60–70%.
Less electricity purchased
You buy significantly less electricity from your energy supplier — day after day.
Lower electricity costs
In the long run, your electricity costs fall considerably, especially as prices rise.
More independence
Less dependence on the electricity market — even in the evening and at night.
Use solar energy optimally
The electricity you generate yourself is no longer fed into the grid unused.
Costs & prices
How much does a solar installation with battery storage cost?
Costs depend on the system size, storage capacity, roof type and component quality. Typical guide prices for a detached house:
Photovoltaic installation (approx. 10 kWp)
18,000 – 25,000 CHF
Battery storage
8,000 – 15,000 CHF
Complete system
25,000 – 40,000 CHF
Thanks to subsidy programmes and higher self-consumption, the system can pay for itself economically over several years.
Storage size
How large should your battery storage be?
The ideal size depends on your household's electricity consumption and the size of your solar installation. An oversized storage can be less economically sensible.
Select your household profile to see the recommended storage size and expected self-consumption.
3–4 Personen
Einfamilienhaus
Empfohlener Speicher
8–10 kWh
Tageskapazität
8–10 kWh
Electricity production
How much electricity does a solar installation produce?
A typical 10 kWp installation in Switzerland produces around 9,000–11,000 kWh per year — that's approximately 25–40 kWh per day.
The exact amount depends on the roof orientation, tilt angle and regional solar irradiation.
Battery storage is especially worthwhile when…
An electric car is being charged
A heat pump is running
Evening electricity consumption is high
The goal is to use as much solar electricity as possible directly
FAQ
Frequently asked questions about battery storage
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