Agri-photovoltaics in Baden-Württemberg: Third pilot plant of the model region for agri-PV berry cultivation with a closed water cycle

Agri-PV Heuchlingen – Dr. Dieter Blankenhorn, Director of the LVWO, Minister Peter Hauk, State Secretary Gisela Splett and Timo Frey, Mayor of the City of Bad Friedrichshall – Image: © Fraunhofer ISE / Oliver Hörnle

The Baden-Württemberg agri-photovoltaics model region has opened a new research facility for berry cultivation with a closed water cycle in Heuchlingen. This third pilot plant within the research project “Model Region Agri-Photovoltaics for Baden-Württemberg” is a promising step towards sustainable agricultural practices and opens up exciting possibilities for the future.

The research facility was developed in collaboration with the State Teaching and Research Institute for Viticulture and Fruit Growing Weinsberg (LVWO), the Fraunhofer Institute for Solar Energy Systems ISE, and eleven other project partners. This interdisciplinary team aims to establish agri-photovoltaics (agri-PV) as an efficient method for the simultaneous use of agricultural land for food production and solar energy generation.

The research facility was opened in May 2023 by Peter Hauk, Baden-Württemberg's Minister for Food, Rural Affairs and Consumer Protection. The facility in Heuchlingen features a unique concept. It focuses on cultivating various berry varieties and utilizes completely closed-loop systems for water and nutrients.

The idea behind this innovative agri-PV system is to increase resource efficiency in agriculture while simultaneously generating renewable energy. Here are some key aspects and interesting facts about agri-photovoltaics and the new research facility in Heuchlingen:

📌 Agri-photovoltaics at a glance 🌾

Agri-photovoltaics (Agri-PV) is a sustainable agricultural practice in which photovoltaic modules are installed on agricultural land to produce both food and solar energy. This integrated use of land has the potential to increase resource efficiency in agriculture and contribute to the energy transition.

🌄 Model region for agri-photovoltaics Baden-Württemberg 🌍

The Baden-Württemberg Agri-Photovoltaics Model Region is a research project aiming to establish agri-PV as an efficient form of land use in the region. In collaboration with various partners, pilot plants are being developed and tested to demonstrate the feasibility and advantages of this technology.

🍇 Sustainable berry farming 🌱

The new research facility in Heuchlingen focuses on berry cultivation, particularly bush and strawberry varieties. The closed water cycle within the facility allows for the economical use of water resources and minimizes the use of fertilizers, as nutrients can be reused.

☀️ Renewable energy generation 🌞

In addition to berry production, the agri-PV system in Heuchlingen also generates solar energy. The photovoltaic modules, installed above the berry fields, convert sunlight into electrical energy. This contributes to a sustainable energy supply and reduces the need for conventional energy sources.

🤝 Interdisciplinary collaboration 🧪

The secret to the success of this research facility lies in the close collaboration between LVWO, the Fraunhofer Institute ISE, and other project partners. This interdisciplinary team combines agricultural expertise with solar energy solutions to create innovative agri-PV systems.

🌍 Sustainable agriculture and climate protection 🌿🌎

Agrivoltaics is not only a way to promote sustainable agricultural practices, but also to contribute to climate protection. Integrating renewable energy into agriculture can help reduce greenhouse gas emissions and minimize the environmental impact of food production.

💡 Potentials and challenges 📊

Agri-photovoltaics has both potential and challenges. While it can increase agricultural productivity and provide renewable energy, questions of land use, technology efficiency, and economic viability must also be considered.

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#️⃣ Hashtags: #AgriPhotovoltaics #SustainableAgriculture #RenewableEnergy #Innovations #ClimateProtection

🌟 The new research facility in Heuchlingen, Baden-Württemberg, demonstrates that agri-photovoltaics is a promising technology that can influence the future of sustainable agriculture and renewable energy development. Close collaboration between research institutions and agricultural experts is helping to advance this innovative solution and further explore the potential of this sustainable form of land use. 🌱🌞🚜

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Innovative agri-PV system for sustainable berry cultivation in Heuchlingen – Minister Peter Hauk – Image: © Fraunhofer ISE / Oliver Hörnle

🌱 Agri-photovoltaics (Agri-PV) is an innovative agricultural practice that aims to use farmland more efficiently by installing photovoltaic systems above various berry varieties. An outstanding example of this technology in action is located in Heuchlingen, Baden-Württemberg. This Agri-PV system has an installed capacity of 113 kilowatts peak and covers an area of ​​almost 2,000 square meters. Here, researchers from the State Institute for Viticulture and Enology (LVWO) are investigating the influence of the Agri-PV system on the cultivation of raspberries, blueberries, currants, strawberries, gooseberries, and blackberries in the substrate.

🌍 The idea behind agri-photovoltaics is to use agricultural land for multiple purposes. This means that the land is not only used for growing berries, but also for generating energy through solar cells. This concept offers several advantages that are of great importance in the context of sustainability and the challenges of the 21st century.

1. 🌿 Efficient use of space

A key objective of agri-PV is the efficient use of land. Agricultural land is limited and valuable. By combining berry cultivation and solar power generation on the same area, valuable agricultural land is saved.

2. ☀️ Sustainable energy production

Agri-PV systems generate renewable energy from the sun. This contributes to reducing dependence on fossil fuels and lowering greenhouse gas emissions, which in turn helps combat climate change.

3. 🍇 Food production

While the solar cells convert sunlight into electricity, the berries grown underneath can still be harvested. This leads to sustainable food production.

4. 💧 Closed cycles for water and nutrients

A remarkable feature of these agri-PV systems is the use of completely closed-loop systems for water and nutrients. This minimizes resource consumption and ensures efficient use of water and fertilizers.

5. 🔬 Investigation and Research

The agri-PV plant in Heuchlingen also serves as a research site to understand the impact of this technology on various berry crops. This can contribute to improving future agricultural practices.

🏞️ The Baden-Württemberg state government has actively championed the promotion of agri-photovoltaics. This is reflected in the statement by Minister Hauk, who described agri-PV as an intelligent response to the current challenges of our time. These challenges include the need to develop sustainable energy sources, ensure food security, and make land use more efficient.

🌞 In practice, agri-photovoltaics involves mounting solar panels on specially designed support structures above berry crops. These structures allow sufficient sunlight to pass through for the plants to photosynthesize, while simultaneously generating electricity. The positioning of the solar panels is optimized to ensure they do not negatively impact the berry plants.

💧 The closed-loop water and nutrient systems are an essential part of this system. They ensure that the water used for irrigation is used efficiently and not wasted. Furthermore, they allow for precise control of the plants' nutrient supply, which can lead to healthier growth and higher yields.

🍓 The selection of berry crops studied in Heuchlingen, including raspberries, blueberries, currants, strawberries, gooseberries, and blackberries, demonstrates the versatility of this approach. Different berry varieties have varying requirements for light, water, and nutrients. Therefore, it is important to understand how agri-PV systems can meet these needs.

🐝 Another interesting aspect of agri-photovoltaics is the possibility of integrating beehives into the system. Bees play a crucial role in the pollination of plants, including many berry crops. By being close to the berry plants in the agri-PV system, bees can work more efficiently and contribute to increased crop yields.

🌏 However, agri-photovoltaics is not limited to Baden-Württemberg. Similar concepts are being researched and implemented in various parts of the world. This demonstrates the global interest in sustainable agricultural practices and renewable energy production.

🌟 Agri-photovoltaics is a promising and innovative solution to the challenges of sustainable land use, energy production, and food security. Combining berry cultivation and solar energy generation on the same land offers numerous benefits and is a prime example of how smart technologies can contribute to tackling global problems.

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• Closed cycles for sustainability: Water and nutrients in focus 💧🌿
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#️⃣ Hashtags: #AgriPhotovoltaics #Sustainability #Agriculture #RenewableEnergy #Efficiency

Agri-photovoltaics: Agriculture and energy production in harmony – State Secretary Gisela Splett – Image: © Fraunhofer ISE / Oliver Hörnle

Agri-photovoltaics (Agri-PV) is an innovative technology that enables the simultaneous use of agricultural land for generating solar energy and cultivating crops. A prime example of this technology is the research facility of the “Model Region Agri-Photovoltaics for Baden-Württemberg,” developed by the Fraunhofer Institute for Solar Energy Systems (ISE) under the leadership of project manager Oliver Hörnle. This facility is distinguished by its closed-loop water and nutrient cycles, making it unique and environmentally friendly.

💧 Efficient water use in the agri-PV system

In this agrivoltaic system, rainwater is collected and stored for irrigation of the cultivated berries. This is combined with fresh water to ensure optimal plant hydration. But that's not all: The substrate in which the berries grow collects excess moisture that would normally be lost. This moisture is treated using a solar power system and reused. This closed-loop system not only minimizes water consumption but also significantly reduces the need for fertilizers.

🌍 Environmental protection and groundwater protection

Reducing fertilizer use is an important contribution to environmental protection, as it lowers the risk of groundwater contamination from excess nutrients. This is particularly important in agricultural areas, where protecting water resources plays a crucial role.

🔬 Research and Support

The research project for the “Model Region Agri-Photovoltaics for Baden-Württemberg” will run until 2024 and is supported by the state ministries for the environment, climate and energy, as well as for food, rural areas and consumer protection. This demonstrates the importance that the state government of Baden-Württemberg attaches to this innovative technology.

🍇 Focus on pome and berry fruits

A key focus of the project is the investigation of agri-photovoltaics in the context of pome and berry fruit. The researchers are developing customized pilot plants at five different locations, each cultivating different fruit and berry varieties. This allows them to assess the feasibility of this technology in various applications and to test different technologies and design variations.

☀️ Successes and potential of agri-photovoltaics

The first of the project's five agri-PV plants was inaugurated in May 2022, and its results are promising. The closed-loop water and nutrient cycles have proven highly efficient and could represent a turning point in sustainable agriculture and renewable energy production.

🌿 Sustainable agriculture and clean energy

Agrivoltaics offers a win-win situation, where agricultural land is not only used for food production but also generates clean solar energy. This contributes to reducing CO2 emissions and supports the energy transition. At the same time, the closed-loop system in these installations enables more sustainable and environmentally friendly agriculture.

🌎 Global relevance of agri-photovoltaics

The connection between solar energy and agriculture is not only relevant in Baden-Württemberg. Similar concepts are being researched and implemented in various parts of the world. The combination of renewable energy production and sustainable agriculture has the potential to minimize environmental impacts while simultaneously maximizing resource efficiency.

🔍 Outlook on the future of agri-photovoltaics

Overall, the research facility of the “Model Region Agri-Photovoltaics for Baden-Württemberg” demonstrates the possibilities and potential of this innovative technology. It could contribute to making agriculture more sustainable while simultaneously generating clean energy, which is of great importance in light of the global challenges related to climate change and energy demand.

🌱 Innovation for a sustainable future

Agrivoltaics is an example of how innovation and research can help address pressing problems and develop sustainable solutions. It will be exciting to see how this technology develops in the coming years and what impact it will have on agriculture and energy production.

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• 🍏 Fruit and berry varieties in the agri-photovoltaic project
• 📊 Innovation potential of agri-photovoltaic technology
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#️⃣ Hashtags: #SustainableAgriculture #SolarEnergy #CircularEconomy #BerryCultivation #EnvironmentalProtection #Innovation #RenewableEnergy #GlobalPerspectives #EnergyTransition #AgriPhotovoltaics