Guide: Introduction to solar energy
Solar energy is one of the most promising energy sources of our time. It is sustainable, clean and makes it possible to both save costs and contribute to environmental protection. In this extended guide, you will learn everything you need to know about using solar energy - from the basics to installation and long-term maintenance of your system.
Why solar energy?
Advantages of solar energy
Environmentally friendly: Solar energy produces no harmful emissions and significantly reduces CO₂ emissions.
Sustainable: The sun is an inexhaustible source of energy that can be utilised worldwide.
Cost savings: After installation, you benefit from permanently lower electricity costs.
Independence: A solar power system makes you less dependent on energy suppliers and fluctuating electricity prices.
Increase in property value: Buildings with solar systems are often perceived as more modern and more valuable.
Disadvantages and challenges
High initial investment: Installation costs can be high, but are cushioned by subsidy programmes
Dependence on the weather: Energy production varies depending on solar radiation
Space requirement: Sufficient space is required for larger systems.
Basics of solar energy
1 Types of utilisation
Solar energy can be utilised in two main ways:
Photovoltaics (PV): Conversion of sunlight into electrical energy. This method is most commonly used for self-consumption or feeding into the electricity grid.
Solar thermal: Utilisation of solar heat for water and space heating.
2. how a photovoltaic system works
Solar modules: These capture sunlight and convert it into direct current (DC) using solar cells.
Inverter: The direct current is converted into alternating current (AC), which is required to operate household appliances.
Electricity storage: Surplus energy can be stored in batteries and used later.
Feed-in: Unused electricity can be fed into the public grid, for which you receive a feed-in tariff.
3. efficiency factors
The efficiency of a solar energy system depends on:
Module quality: High-quality modules offer a higher level of efficiency.
Location: Solar radiation and tilt angle play a decisive role.
Maintenance: Regular cleaning and inspection ensure maximum energy yield.
Planning and installing a solar system
1. site analysis
A thorough site analysis is the first step towards a successful installation. Take into account:
Solar radiation: Maximum efficiency is achieved in locations with plenty of direct sunlight
Orientation: A south-facing orientation with an inclination of 30-45 degrees is ideal.
Shadow cast: Make sure that no trees, buildings or other obstacles shade the modules.
2. components of a solar system
Solar modules: Choose between monocrystalline (higher efficiency) or polycrystalline modules (cheaper).
Inverter: This is the centrepiece of your system and is responsible for converting the electricity.
Battery storage: Allows you to store surplus electricity for later use.
Mounting systems: These fix the modules securely to your roof or the ground.
3. Authorisations and funding opportunities
Permits: In many countries, a building permit or registration with the local authorities is required.
Subsidies: Take advantage of programmes such as the Federal Subsidy for Efficient Buildings (BEG) or similar subsidies to reduce investment costs.
4. installation
The installation should be carried out by a certified specialist company. Steps of the installation:
Mounting the modules: Fasten securely to the roof or an open area.
Cabling: Connect the modules to the inverter and possibly a battery storage system.
Connecting to the power grid: Ensure that the system is properly integrated into the grid.
Maintenance and care of your solar system
1. cleaning
Why clean? Dust, leaves and dirt can reduce the efficiency of the modules by up to 20 %.
How often to clean Once a year or more frequently in regions with high dust levels
Tips: Use soft water and mild detergents. Avoid abrasive materials.
2. technical inspection
Cables and plug connections: Check regularly for damage.
Inverter: Monitor its functionality, as it plays a key role in the system.
3. monitoring
Real-time monitoring: Modern systems allow you to monitor the performance of your system in real time and detect problems at an early stage.
Costs and amortisation
1. investment costs
The costs vary depending on the size of the system, module selection and installation complexity
Average: A typical system for a single-family home costs between €5,000 and €15,000.
2. savings
Electricity costs: After the amortisation period (approx. 8-12 years), you generate almost free electricity.
Feed-in tariff: Surplus energy can be fed into the power grid and remunerated.
The future of solar energy
The technology of solar energy is constantly evolving:
Flexible modules: These can be used on various surfaces, e.g. on vehicles.
Higher efficiency: New materials enable more efficient energy conversion.
Integration into buildings: Solar cells are increasingly being integrated into windows, façades and roofs.
Storage technologies: Advances in battery technology are making solar energy even more flexible and efficient.
Conclusion: Your entry into solar energy
Solar energy is one of the best investments for a sustainable and cost-efficient future. With a well-planned and well-maintained system, you can not only reduce your electricity costs, but also make an active contribution to climate protection. Utilise the benefits of modern solar energy and take the first step towards a sunny future.
Start now: Get advice and find the right solar solution for your home or business!