Eco6therm Sàrl
2832 Rebeuvelier · about 49.1 km
Eco6therm specializes in the installation of heating systems, particularly heat pumps, and solar photovoltaic energy solutions.
eco6therm.chHome solar battery · Aarau
Installing a solar battery in Aarau: Renovation guide
Are you planning to optimize your photovoltaic system in Aarau with a solar storage battery? It is an excellent strategy for maximizing energy self-consumption. By storing surplus energy produced during the day, you reduce grid dependence during evening peak hours. Whether you are in the planning or decision-making phase, proper preparation is essential. Use our free RenoIndex estimator to obtain an accurate price range in Swiss francs for your renovation project today and get started with confidence.
At a glance
- Typical budget
- CHF 7'200 – CHF 15'400
- Midpoint
- CHF 10'500
- Grants found
- 0
- Nearby companies
- 4
Worked examples in Aarau
Small project
CHF 4'000 – CHF 9'100
Typical project
CHF 7'200 – CHF 15'400
Large project
CHF 12'400 – CHF 25'400
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 5 kWh | CHF 4'000 | CHF 9'100 | CHF 1'200 |
| Typical project | 10 kWh | CHF 7'200 | CHF 15'400 | CHF 1'100 |
| Large project | 18 kWh | CHF 12'400 | CHF 25'400 | CHF 1'000 |
Computed with our estimator for Aarau (regional factor included), standard finish. Only the project size changes.
Cost split (typical project)
- Labour : CHF 2'100 (20 %)
- Materials : CHF 7'300 (70 %)
- Other costs : CHF 1'100 (10 %)
What the price covers
Included
- Supply and installation
- VAT
- Battery, charge management and standard connection; options according to answers
Not included
- Permits and architect fees
- Unexpected structural issues
- Possible subsidies
- Solar panels and complete electrical refurbishment
Aarau's housing stock in figures
In Aarau, the federal building register lists 3'585 residential buildings and 11'819 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.
Age of residential buildings
71 % built before 1980
- Before 191915 %
- 1919–194526 %
- 1946–196018 %
- 1961–19706 %
- 1971–19806 %
- 1981–19907 %
- 1991–20006 %
- 2001–20106 %
- Since 201110 %
Construction year does not reveal past renovations: check the current insulation condition.
Main heating energy
43 % · Gas
- Gas43 %
- Heat pump27 %
- Heating oil20 %
- District heating6 %
- Electricity2 %
- Wood2 %
This distribution describes recorded buildings, not your system's consumption or efficiency.
Heating and hot water: which energies?
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 43 % | 22.7 % |
| Heating oil | 20 % | 10.3 % |
| District heating | 6 % | 2.9 % |
| Heat pump | 27 % | 18 % |
| Electricity | 2 % | 44.2 % |
| Wood | 2 % | 0.9 % |
Each line gives the share of buildings using that energy, separately for heating and for hot water. The two columns do not always reach 100%: some buildings combine two systems, or reported none.
Type of heating system
- Boiler (unspecified)63.8 %
- Heat pump27.2 %
- Heat exchanger (district)5.7 %
- Central electric heating2.2 %
- Condensing boiler0.5 %
- Stove0.5 %
A standard non-condensing boiler is usually older and less efficient.
Houses or apartment buildings?
- Single-family houses59.6 %
- Two-dwelling houses9.7 %
- Apartment buildings (3+)30.7 %
- Other0 %
12.4 % of buildings mix housing with shops or offices.
The typical building
- storeys (median)
- 2
- median footprint
- 120 m²
- median dwelling area
- 90 m²
Renovations, heritage and volumes
For your renovation plans in Aarau, federal building register figures are vital. With 467 buildings under heritage protection, it is crucial to contact the municipality early to address permit requirements. The median house volume is 800 m3, which serves as a key indicator for scaling insulation or heating upgrades. Please note that data coverage regarding volume is partial, as only 20 houses were measured according to the SIA 416 standard. We recommend verifying the precise dimensions of your specific property before starting any works to ensure your renovation budget remains accurate and effective for your project.
467
buildings flagged as protected
status known for 3'585 of 3'585 buildings; check with the municipality
800 m³
median house volume (SIA 416)
measured for 20 of 2'135 houses
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
The importance of self-consumption
A battery is worthwhile when solar output clearly exceeds your daytime use. Self-consumption involves directly using the energy you generate. Without a battery, unused electricity is fed into the grid, often at a rate lower than the purchase price.
By storing this surplus, you ensure that you use green energy throughout the evening, when your needs are often highest.
Intelligent management of your local production allows you to achieve substantial savings over the long term while increasing your energy autonomy.
Correctly sizing your storage
Size capacity by evening consumption, not panel power. It is tempting to aim for maximum capacity, but this can lead to unnecessary costs without real performance gains. Analyze your night-time consumption records to determine the optimal size.
A properly sized system should be able to cover your household needs between sunset and sunrise. A qualified installer can help you find the perfect balance between the initial investment and the energy savings generated by your battery over time.
Technical pre-checks
Check compatibility with your existing inverter before buying. Some inverters are hybrid models designed for easy battery integration, while others will require additional hardware.
The physical space available for the installation, ideally in a temperate and dry room, must also be considered. Ensure that your electrical installation complies with the standards in force in the Canton of Aargau.
A preliminary inspection by a professional helps avoid unpleasant surprises during installation and ensures the long-term safety of your home equipment.
Planning and budgeting
Investing in a solar battery is a decision that requires rigorous financial analysis. In addition to material costs, remember to include labor costs for the electrical installation and system configuration.
Use our RenoIndex estimator to get a clear view of current market rates in the region. Also, remember to check for any potential grants or subsidies available at the federal or cantonal level to reduce your costs.
Careful planning ensures an optimal return on investment and allows you to enjoy your increased energy autonomy.
Your project in 5 steps
1. Estimate
Set a budget range with the estimator.
2. Grants
Apply before work starts.
3. Quotes
Compare at least 3 quotes.
4. Permit
Check with the municipality whether a permit is needed.
5. Works
Follow the site and do a written handover.
Grants and subsidies
No specific grant listed for this work. Maintenance tax deductions may still apply.
Companies in the area
TELEC Renggli S.A. (Télécommunications, Electricité et Commerce)
2735 Malleray · about 61.2 km
Company specialized in electrical installations and telecommunications systems, including network infrastructure and related trade.
telecrengglisa.chHyperSolaire Sàrl
2718 Lajoux JU · about 70.4 km
Jura-based specialist in photovoltaic panel installation and energy storage solutions with AI-driven optimization.
hypersolaire.chSolar conseil Sàrl
2605 Sonceboz-Sombeval · about 70.4 km
Solar conseil Sàrl specializes in the installation of photovoltaic power plants, energy storage solutions, and energy efficiency consulting in the Jura and Bernese Jura regions.
solarconseil.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
Frequently asked questions
Is a battery mandatory for solar power?
No, it is not mandatory. You can feed your surplus into the grid. However, a battery allows you to increase your self-consumption and reduce your dependence on the electrical grid during the evening hours.
How long does a battery last?
Most modern solar batteries have a lifespan of 10 to 20 years, depending on the technology used and the daily usage conditions within your home.
Can I install the battery myself?
The electrical installation must be carried out by a qualified professional to ensure safety and compliance with current standards. Handling batteries involves significant risks.
What are the maintenance costs?
Modern solar batteries require very little maintenance. A regular check by a professional during the annual maintenance of your photovoltaic system is generally sufficient to ensure proper operation.
Works often combined in Aarau
Other works in Aarau
Kitchen renovationBathroom renovationNew flooringInterior paintingWindow replacementRoof renovationFacade insulationHeat pump installationSolar panelsSolar water heatingTerrace constructionFence installationStairwell renovationElevator installation or upgrade