PV or PVT system
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Discover PVT systems
The clever alternative to conventional PV systems
Discover the world of PVT systems (photovoltaic thermal systems), an innovative combination of photovoltaic and solar thermal technologies.
These future-oriented systems are by far a lesser-known alternative to the ubiquitous PV systems. They are designed to generate both electrical and thermal energy and offer a multitude of benefits. Let's delve deeper into the fascinating world of PVT systems and discover the key elements and benefits they have to offer.
Double energy generation
PVT systems are at the forefront of energy efficiency by generating electricity and heat at the same time. This duality is particularly beneficial for buildings that require both electrical energy and heat. The ability of PVT systems to provide both forms of energy makes them a preferred choice in modern energy generation.
Space and cost efficiency
The integration of photovoltaic and solar thermal elements in a PVT system leads to significant space and cost efficiency. Compared to separate installations of photovoltaic and solar thermal systems, PVT systems require less space and can therefore contribute to cost savings.
Increased efficiency of the photovoltaic modules
An outstanding feature of PVT systems is the increased efficiency of the photovoltaic modules. The solar thermal components reduce the temperature of the PV modules, which improves their efficiency as they work more effectively at lower temperatures.
Versatile application options
PVT systems offer flexible application options, from residential buildings to commercial facilities. This adaptability makes them an attractive solution for a wide range of applications.
Sustainability
The combination of solar energy generation and heat production in PVT systems makes a significant contribution to environmental friendliness and sustainability. They reduce greenhouse gas emissions and are an important step towards a greener future.
Conclusion:
PVT systems represent the progressive trend towards integrated renewable energy solutions. They maximize energy efficiency and reduce our dependence on fossil fuels. When deciding on an energy system for your home or business, PVT systems should be considered for their many benefits.
What does a PVT system cost?
Investment cost comparison: PVT systems vs. PV systems
The decision to invest in solar technology requires a thorough consideration of various factors, including the initial investment costs. In this article, we compare the investment costs of photovoltaic thermal systems (PVT) and pure photovoltaic systems (PV) to provide you with a sound basis for decision-making.
Photovoltaic systems (PV)
Acquisition costs
ModulesThe cost of PV modules varies depending on quality, brand and technology and is typically between 200 and 400 euros per kilowatt peak (kWp).
InverterThese are necessary for the conversion of direct current (DC) into alternating current (AC) and cost around 150 to 250 euros per kWp.
Mounting systemsThese cost between 100 and 200 euros per kWp.
InstallationDepending on the complexity of the installation and the region, the costs can be between 200 and 500 euros per kWp.
Total investment costs
The total investment costs for a typical PV system therefore amount to around 650 to 1350 euros per kWp. For a 10 kWp system, this would be a total of 8,000 to 15,000 euros.
Photovoltaic thermal systems (PVT)
Acquisition costs
ModulesPVT modules are more expensive due to their dual function and typically cost between 500 and 800 euros per kWp.
Thermal componentsAdditional costs for heat exchangers, piping and heat storage amount to around 300 to 600 euros per kWp.
Inverters and mounting systemsThese costs are similar to those for PV systems and amount to 150 to 250 euros per kWp for inverters and 100 to 200 euros per kWp for mounting systems.
InstallationAs the installation is more complex, the costs are between 400 and 800 euros per kWp.
Earthworks and underground storageThese are required for the thermal component and can cause considerable additional costs. The cost of earthworks and the installation of an underground storage tank can be between 500 and 1,000 euros per kWp.
Total investment costs
The total investment costs for a PVT system therefore amount to around EUR 1,950 to 3,650 per kWp. For a 10 kWp system, this would be a total of 19,500 to 36,500 euros.
Cost comparison and amortization
Cost comparison
PV systems650 to 1,350 euros per kWp
PVT systems1,950 to 3,650 euros per kWp
At first glance, PVT systems appear significantly more expensive than PV systems. However, it is important to consider the additional benefits of PVT systems.
Advantages of PVT systems
EfficiencyPVT systems use solar energy more efficiently by generating both electricity and heat.
Space savingA PVT system requires less space than two separate systems for electricity and heat.
Energy cost savings: The simultaneous use of electricity and heat can significantly reduce energy costs.
Cooling the PV modulesThe thermal component cools the PV modules, which increases their efficiency.
Amortization period
The payback period depends on many factors, including local energy prices, government subsidies and the specific use of the heat generated. As a rule, PVT systems pay for themselves more quickly than pure PV systems due to the additional energy savings and subsidies, despite the higher initial investment.
Sample calculation for a PVT system
Conclusion
While the investment costs for PVT systems are higher than for PV systems, they also offer significant advantages in terms of efficiency, space savings and energy savings. For users who require both electricity and heat, the higher initial costs can be quickly amortized through long-term savings and higher efficiency. A careful analysis of the specific needs and conditions on site is crucial to make the best investment decision.
Which solution should I choose, PV or PVT?
The decision between a photovoltaic (PV) and a photovoltaic thermal (PVT) system is an important step on the way to sustainable energy generation. While both systems use solar energy, they offer different benefits. In this guide, we highlight the key aspects of both technologies in five points to help you make the best choice for your needs.
1. energy generation - PV vs. PVT
PV systems specialize in generating electrical energy, while PVT systems generate electricity and heat at the same time. If you need hot water or heating support as well as electricity, a PVT system could be a more efficient solution.
2. space and cost efficiency
PVT systems offer an integrated solution, which makes them particularly space-saving. They are ideal if you have limited space and need both electrical and thermal energy. PV systems are a good choice if your main objective is purely to generate electricity.
3. efficiency at different temperatures
The efficiency of PV modules can decrease at higher temperatures. PVT systems, on the other hand, utilize the heat generated by PV modules, which increases the overall efficiency of the system. This can be particularly beneficial in warmer climates.
4. versatility and areas of application
While PV systems are mainly used for electricity generation, PVT systems are suitable for a wider range of applications, including water heating and central heating backup.
5. sustainability and environmental friendliness
Both systems contribute to the reduction of greenhouse gas emissions. The decision should also take into account your personal sustainability goals.
Our conclusion:
The choice between a PV and a PVT system depends on your specific needs and circumstances. Consider factors such as energy requirements, space availability and climatic conditions. Whichever option you choose, the move towards renewable energy is a positive contribution to the environment and energy independence.
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