Agri PV Disadvantages: Challenges and Limitations of Photovoltaics on Agricultural Land
Agri-PV utilizes agricultural land for solar power generation, but there are significant disadvantages. In this article, you'll learn more about the main Agri-PV disadvantages such as land use competition, biodiversity losses, and high investment costs.
Key Takeaways
Agri-photovoltaics faces challenges such as competition for agricultural land.
High investment costs and bureaucratic hurdles complicate the implementation of Agri-PV systems, which can still provide additional income sources for farmers.
The installation of photovoltaic systems can significantly impact biodiversity and specific plant yields through shading, which must be considered during planning.
Competition for Agricultural Land
A central problem of agri-photovoltaics is the competition for agricultural land. Conflicts can arise particularly in densely populated areas where arable land is limited.
The integration of Agri-PV into existing agricultural practices requires careful planning and extensive regulatory coordination. Permits for installing solar systems on agricultural land are often necessary and have long processing times. Politicians must make concrete decisions to reduce bureaucratic hurdles and make land use more efficient.
Despite these challenges, Agri-PV can serve as an additional income source for farmers by reducing uncertainties in agricultural yields and mitigating the effects of varying weather conditions on yields. However, the planning and implementation of such agri-pv systems should be done carefully to minimize negative impacts on the environment and agriculture.
Impact on Biodiversity
The installation of traditional photovoltaic systems on agricultural land typically has very positive effects on biodiversity when intensive farming is replaced by extensive grassland. This advantage is not realized to the same extent with Agri-PV due to continued farming. Continued agricultural use can reduce plant species diversity on arable land compared to a conventional ground-mounted photovoltaic system.
The effects of shading vary greatly depending on specific climatic conditions and cultivated plants. Corn, soybeans, and field beans are particularly susceptible to light deficiency, which can significantly reduce their yields. These changes can affect agricultural use through shading and soil effects. However, other plants might benefit from the shade, especially with continuing climate temperature increases.
Furthermore, photovoltaic systems designed as Agri-PV take up significantly more space compared to conventional ground-mounted systems. The space requirement for solar parks becomes higher, which has disadvantages for the landscape. This could further complicate public acceptance of the energy transition.
These aspects must be considered when planning and constructing Agri-PV systems if one wants to fully utilize the positive effects of photovoltaics on biodiversity.
High Investment Costs
Another significant disadvantage of agri-photovoltaics is the high investment costs. Implementing Agri-PV systems requires substantial initial investments, particularly for customized constructions and site adaptations. These high costs can present a major hurdle for many farmers and investors.
Construction and operating costs for Agri-PV systems are typically higher than for conventional photovoltaic systems, affecting economic viability. Many farmers or investors need significant pre-financing to cover the high costs. Additionally, electricity price fluctuations can significantly influence the economic planning of Agri-PV projects if the system is not in an EEG-subsidized area.
This results in electricity generated by Agri-Photovoltaic systems being about twice as expensive as electricity generated in conventional ground-mounted solar parks, according to the Fraunhofer Institute in 2024.
Despite these financial challenges, Agri-PV also offers opportunities to diversify income sources and reduce yield uncertainties. However, it's important to carefully weigh the high investment costs and associated risks before deciding to implement such systems.
Lower Yields Despite More Work
Lease yields per hectare for Agri-PV areas are about one-third lower compared to leasing to conventional PV ground-mounted solar park operators. This is because about one-third less energy can be generated per area through the solar modules. The yields from agricultural use typically don't make up for this reduced income. In total, farmers have lower yields even with dual use of the land for power production and traditional agricultural cultivation compared to pure solar use. The additional work effort for cultivation is therefore usually not worthwhile. We recommend Agri-PV only when a conventional solar park is not approvable by local authorities or when the land is still indispensable for agricultural operations and no replacement areas can be leased.
Although the possibility of leasing farmland for solar projects provides farmers with an additional source of income, the framework conditions for successful implementation remain complex and require careful planning and coordination. Anyone wanting to lease meadow or grassland for solar will find an overview of the suitable options there.
Technical Requirements and Maintenance
The technical requirements and maintenance needs of Agri-PV systems should not be underestimated. These systems must meet specific structural and stability requirements to ensure safe operation. Regular maintenance and operational protocols are crucial for the effective performance of the systems.
Intelligent control of PV modules could optimize shading and thus improve plant yields. However, this requires additional investments in technology and expertise.
The technical complexity and need for continuous maintenance present additional challenges that must be considered when planning and implementing Agri-PV systems.
Bureaucratic Hurdles
The bureaucratic hurdles for Agri-PV systems are often complex and can significantly hinder expansion. Approval processes are often time-consuming and require extensive regulatory coordination, which can delay project implementation. As of 2025, many details remain unclear. Read more about this in our article on legal uncertainties.
To promote the expansion of Agri-PV, concrete political decisions are necessary. The federal government must take measures to simplify approval procedures and reduce bureaucratic obstacles.
Limitations Due to Shading
Shading from photovoltaic modules presents a certain limitation for agricultural use. Module placement can significantly reduce light for plants like corn and rapeseed, negatively affecting their growth. It's necessary to switch to varieties that benefit from shading.
Light deficiency caused by PV module shadows can restrict agricultural productivity in certain areas. The competition for light between plants and PV modules can lead to somewhat lower agricultural yields.
Problems with Agricultural Machinery Use
The integration of Agri-PV systems can complicate the use of agricultural machinery and require additional adaptations. The interactions between Agri-PV systems and plants can potentially offer advantages for certain crops.
Farmers should also consider that field cultivation becomes more complex, working widths must be aligned with PV systems, and there's an increased risk of accidentally damaging the photovoltaic systems when tending to the fields. With increasing automation of field work in the coming decades, this presents a limitation that should be considered.
The use of agricultural machinery often requires additional adaptations to meet the new conditions created by Agri-PV systems. These adaptations can be costly and time-consuming but are necessary measures to ensure the efficiency of agricultural operations, especially for farmers.
Weather Influences and Damage
Agri-PV systems can suffer damage from extreme weather conditions, including heavy rain and frost. These weather conditions can affect the structural integrity of the systems and lead to significant repair costs.
Despite these challenges, Agri-PV systems also provide some protection against sun and hail. This can potentially have positive effects on agricultural production by protecting plants from extreme weather conditions, similar to ground-mounted PV.
Summary
Agri-Photovoltaics represents an innovative way to use agricultural land for dual purposes while contributing to power generation. However, there are numerous challenges and disadvantages that must be considered during implementation.
From competition for agricultural land to reduced promotion of biodiversity to high investment costs and yield uncertainties – the list of challenges is long. Technical requirements, more complex cultivation, lower land yields compared to PV solar parks, and bureaucratic hurdles are additional aspects that should be carefully considered.
To fully exploit the potential of Agri-PV, careful planning, further research, and political support are necessary. Only then can the benefits of this innovative technology be maximized.