Complete Guide: Installing a Solar Storage Battery in Écublens

The municipality of Écublens, committed as an Energy City, has developed an ambitious climate plan aiming for carbon neutrality by 2050. With favorable sunlight, installing a storage battery is a relevant solution to reduce your dependence on the electrical grid.

A battery is useful if your solar production significantly exceeds your daytime consumption, allowing you to save the energy produced for your nighttime needs.

6 °C, storage allows you to secure your household needs despite seasonal variations. Undertaking these works now aligns with the municipality's trajectory to reduce greenhouse gas emissions by 35% by 2030 compared to 2020.

This is the opportune time for homeowners wishing to increase their property value while actively participating in the local energy transition.

When planning your project, the choice of battery technology is paramount. Lithium-iron-phosphate (LiFePO4) batteries are commonly favored for their long service life and safety. It is crucial to size the capacity according to your evening consumption, not based on the total power of your solar panels.

Under-sizing would limit your autonomy, while over-sizing would unnecessarily increase your initial investment.

Furthermore, always check the compatibility with your existing inverter before purchasing the storage system. Some hybrid systems allow for better conversion efficiency, reducing energy losses.

Options like monitoring via a mobile app offer real-time tracking of your production and consumption, thus optimizing the use of stored energy.

Do not hesitate to seek advice from qualified professionals to assess if your current installation allows for optimal integration or if it is advisable to adjust your technical configuration to ensure maximum long-term performance.

The building stock in Écublens is varied, ranging from recent constructions to older buildings requiring energy renovation. For houses built before 1990, it is imperative to check the condition of existing electrical networks before any installation.

Upgrading to standards may be necessary to safely host a high-performance solar storage system. Risks related to old insulation materials, such as asbestos, must also be taken into account during drilling or technical room development work, although the installation of a battery itself is often minimally invasive.

Furthermore, the thermal insulation of the building indirectly impacts the overall performance. If the building is poorly insulated, your energy consumption, especially for heating, can be high.

It is often advisable to carry out insulation work before or simultaneously with the solar installation to optimize the overall balance.5 °C).

In the canton of Vaud, and by extension in Écublens, the installation of solar panels and associated equipment is generally subject to a simplified procedure or a waiver of building permits.

However, it is essential to check if your building is listed or located in a heritage protection zone or an ISOS zone, which could restrict installation options. Although there are no specific constraints documented for Écublens in this framework, caution is advised if your home has particular architectural value.

For any specific questions, turn to the municipality or the prefect, who are the competent authorities. If you are planning work affecting the external appearance of the building, the simplified procedure applies unless there is a major change in dimension or use.

Before launching your work, contact your municipal administration to validate that your project complies with local regulations.

A preliminary step avoids any subsequent complications and ensures that your installation respects the guidelines in force regarding the preservation of the local landscape and built heritage.

Regarding taxation, Swiss law allows for the deduction of investment costs intended to save energy from your taxable income. You can deduct 100% of the costs incurred for measures to rationalize energy consumption or allow for the use of renewable energies.

If you choose to deduct effective costs, you can carry forward the balance to the two following tax periods if the costs exceed your net income or cannot be fully taken into account in a single year. Warning: if you receive public subsidies for these measures, you can only deduct the costs that you assume personally.

It is crucial to note that it is not possible to claim a flat-rate deduction during a tax period when energy costs are carried forward. Before starting your work, it is strongly advised to consult your tax advisor or the cantonal tax administration to verify the eligibility of your project for deductions.

Remember that the order of steps requires planning the financing before signing final quotes, to ensure that you comply with all the conditions required to optimize your tax situation following this sustainable investment.

The realization of a solar storage project follows structured steps. The process begins with a feasibility study and a request for quotes from professionals. Once the solution is chosen, the administrative phase takes place to validate compliance with municipal regulations, notably via the simplified procedure.

Ideally, plan the start of work during mild seasons. Although the installation itself is fast, avoiding periods of intense frost (48 days per year in Écublens) facilitates outdoor work on wiring systems and the inverter.

Once the equipment is delivered, the technician proceeds with the installation of the battery, the connection to the existing inverter, and the configuration of the management software. The site ends with a testing and commissioning phase, including the demonstration of the control interface.

Coordination with the local grid operator may be necessary to finalize the connection. By following a methodical approach and anticipating technical needs according to the season, you ensure a smooth installation and harmonious integration of your battery into your home solar setup.

To succeed in your project, avoid classic mistakes such as sizing based on panel power instead of nighttime consumption. It is also common to forget to check technical compatibility with the existing inverter. Before requesting quotes, ensure you make a clear list of your needs.

Here is an essential checklist : have a precise idea of your annual consumption and hourly distribution. Check the space available in your technical room to house the battery. Confirm that your current solar installation is in good working order.

Ensure you have consulted your administration regarding permit issues before committing to any expense. Systematically request several offers to compare technical solutions, not just prices. Check if the consulted companies offer a complete monitoring service.

Demand a clear explanation of the battery capacity warranty. Finally, ensure that each quote includes labor and commissioning costs. By following these steps, you minimize the risk of unforeseen events and ensure the sustainability of your solar investment in Écublens.