Photovoltaic Systems With Installation

Your Path to Energy Independence

  • Your Regional Partner

    As a local solar specialist, we provide personal contact and short travel distances — for quick communication and lower costs. From the first consultation to the completed installation.

  • In Berlin & Brandenburg

    Install a photovoltaic system and ensure an environmentally friendly energy supply! Get in touch with us today for your personalized offer.

  • Professional Consultation

    Would you like to purchase a solar system, including installation, and become less dependent on rising electricity costs in the long term? We offer comprehensive advice and tailored solutions—from high-quality solar modules and inverters to energy storage systems and professional installation.

    Mitarbeiter von sunday solar stehen auf dem Dach und halten ein Solar-Paneel in den Händen
  • On-Site Inspection

    Before we plan your PV system, we analyze the conditions of your property. This appointment ensures the system is optimally designed and meets all requirements. We consider five key factors: 1. Roof Condition: Evaluation of its state, slope, orientation, and any necessary reinforcements. 2. Shading: Identification of factors such as trees or buildings that could reduce performance. 3. Available Space: Calculation of the area for modules—whether on the roof or in the garden. 4. Electrical Infrastructure: Assessment of existing systems for seamless integration. 5. Energy Demand: Analysis of your electricity consumption to tailor the solar system precisely to your needs.

    Ein Mitarbeiter von sunday solar fixiert ein Solar-Paneel auf einem Dach. Der Himmel ist grau.
  • Planning and Installation

    After the assessment, we create a customized offer tailored to your requirements. We rely on top-quality components from brands like SMA, BYD, and K2 to ensure efficiency and durability.

    Eine frisch verbaute Solaranlage von sunday solar auf einem Berliner Dach | Solaranlage mit Montage kaufen

More Products

Wallbox Installation
Wallbox Installation

Experience the benefits of a private charging station at your residence with a wallbox or loading station.

Intelligent Energy Management
Intelligent Energy Management

With intelligent energy management, you can increase the profitability of your PV system.

Save with Energy Storage
Save with Energy Storage

A solar power storage system enhances the use of self-generated solar energy and reduces energy costs.

Interesting Facts About Solar Systems

How does a solar plant work?

Solar panels consist of photovoltaic cells that convert sunlight directly into direct current (DC). An inverter then converts this DC into alternating current (AC), which can be used by household appliances.

What components are part of a pv system?

A typical solar plant includes:

• Solar Panels: Convert sunlight into electricity.

• Inverter: Converts direct current to alternating current.

• Mounting Systems: Secure the panels to roofs or ground structures.

• Cabling: Connects the components.

• Optional: Battery storage to save excess energy.


What types of photovoltaic systems exist?

1. Rooftop Systems: Installed on building roofs.

2. Ground-Mounted Systems: Installed on open fields or lots.

3. Balcony Power Plants: Small plug-and-play systems for balconies or terraces.

What is a balcony power plant?

A balcony power plant is a small, plug-and-play solar system designed for use on balconies or terraces. It allows renters and apartment owners to generate and use their own electricity.

How long does a photovoltaic system last?

Solar panels have a lifespan of around 25 to 30 years. Inverters and other components may have shorter lifespans and might need replacement earlier.

Do I need to register my solar plant?

Yes, in Germany, solar systems must be registered with the Federal Network Agency and the local grid operator. This applies even to balcony power plants. We’re happy to assist you with this process.

Can I install a solar plant myself?

Installation should be carried out by professionals to ensure safety and optimal performance. However, balcony power plants are designed for DIY installation.

What happens during a power outage?

Standard grid-tied solar systems shut off during power outages to ensure the safety of grid technicians. However, with a storage system and backup functionality, emergency power supply can be enabled.

What is the difference between photovoltaic and solar thermal systems?

Photovoltaics: Converts sunlight into electricity.

Solar Thermal Systems: Uses solar energy to heat water or support heating systems.

How much space do I need for a photovoltaic system?

You’ll need about 6 to 8 square meters of roof space per kilowatt-peak (kWp) of installed capacity. The exact space depends on the efficiency of the panels used. We can figure this out for you!

Do I need to prepare my roof for installation?

The roof should be in good condition and capable of bearing the additional weight of the solar system. For older roofs, a structural assessment by an engineer might be necessary. We can organize this for you! Just be in touch!

How is a photovoltaic system maintained?

Photovoltaic systems require minimal maintenance. Panels should be kept clean to ensure maximum efficiency. Regular professional inspections can help detect potential issues early. We can take care of your PV system even after installation. Just be in touch for our maintenance offers.

How quickly does a photovoltaic system pay for itself?

The payback period depends on investment costs, electricity prices, self-consumption rates, and available subsidies. Typically, the payback period ranges from 8 to 12 years.

Can I store excess electricity with my PV system?

Yes, with a battery storage system, you can store excess electricity for later use, such as at night or during bad weather. We’re happy to install this system for you!

What happens if photovoltaic systems are shaded?

Partial shading can reduce a system’s performance. Modern solar panels with bypass diodes and optimized system solutions can minimize this effect. We’ll evaluate and address shading issues during our assessment.

Is it possible to install a solar plant on any roof?

Installation depends on the roof’s structural integrity, orientation, pitch, and available space. A site visit by an expert will determine feasibility. We’re happy to evaluate your roof!

Can a solar plant generate electricity in bad weather?

Yes, solar systems produce electricity even on cloudy days, albeit at reduced capacity. Maximum efficiency is achieved with direct sunlight. However cold temperatures can even be better for efficiency, as the units won't overheat.

Can I use a photovoltaic system to support my heating system?

No, photovoltaic systems are designed for electricity generation. Heating support requires a solar thermal system.

What happens to old solar panels?

Solar panels can be recycled. Most components, such as glass and metal frames, are reusable, minimizing environmental impact. Panels also have a long lifespan.

Can I expand my photovoltaic system?

Yes, many solar systems are modular and can be expanded with additional panels or battery storage. We can also upgrade your existing system. Let us know what you have in mind!