IntroductionTo discuss the evolution of agrivoltaics (solar sharing), it is essential to understand the structural limitations of the currently mainstream silicon-based solar panels. Their high shading rate, significant weight, and rigidity have consistently posed design constraints in the quest for perfect symbiosis with agriculture.The technology that holds the potential to fundamentally solve these challenges is the leading next-generation candidate: perovskite solar cells. This article will discuss their revolutionary potential, the real-world challenges to practical application, and the strategy we must adopt today.The Promise of Perovskites: A Material Designed for AgricultureThe essential characteristic of perovskite solar cells is that they are "extremely thin, light, flexible, and transparent"—properties akin to a "transparent film." This feature offers clear solutions to the numerous limitations of silicon panels.Structural Revolution through Ultra-Lightweight Design: Compared to silicon, which weighs over 10 kg per square meter, perovskites can potentially be reduced to just a few hundred grams. This enables installation on land with poor load-bearing capacity and on simpler support structures.Design Freedom through Flexibility: As they can be "painted" like ink onto film, they can be bent and curved. This allows for more versatile designs that conform to the agricultural site, such as on curved greenhouse roofs or in movable systems optimized for farm machinery."Co-creation of Light" through Tunable Transparency: The level of light transmission can be adjusted during the manufacturing process. This makes true "light sharing" a reality, where necessary light for crops is transmitted, and the remainder is used for power generation.It is a "material that seems as if it were designed to coexist with agriculture." That is the perovskite solar cell, holding the potential to become a decisive turning point in the future of agrivoltaics.The Hurdles: A Realistic Look at the ChallengesHowever, even a technology with such potential faces several significant hurdles before practical application.Technical Challenges (Especially Durability): Perovskites are vulnerable to heat, moisture, and oxygen, and their lifespan is significantly shorter than the 20-plus years of silicon panels. The encapsulation technology needed to ensure long-term stability is still developing.Production and Industrialization Challenges: The technology to mass-produce perovskites with uniform quality over large areas has not yet been established. The supply chain for materials and manufacturing infrastructure is also undeveloped.Lack of International Standards: Without established international standards (like IEC standards) to certify long-term reliability and safety, securing large-scale investment, bank financing, and insurance remains difficult.Conclusion: A Dual Strategy for a Carbon-Neutral FutureThere is little doubt that perovskite solar cells will usher in the next paradigm for agrivoltaics. The technology holds the potential to solve many of the challenges we face.However, we must confront a crucial reality: the timeline for the mass production and market entry of this next-generation technology does not yet align with the urgent societal demand for achieving carbon neutrality in the immediate term.Considering the current state of production and the challenges to practical application, I predict that even if solar power achieves its targeted share of the energy mix in 2040, perovskites will account for less than 10% of that total.Perovskites are superior, but they are not a technology that we, in 2025, can immediately and fully adopt to realize a decarbonized society tomorrow.Therefore, the strategy we must take is clear. It is a dual strategy that advances both "today's reality" and the "ideal future" in parallel.This is completely different from "hakomono" (pork-barrel) public works, where problems are solved by injecting capital from the center. It requires an intense sense of ownership from the community itself to restructure its economy around the new core of agrivoltaics. And that agrivoltaics is not a panacea; its value is maximized precisely because it is often a "passive choice," a last resort for regions with no other options.Our present actions, therefore, must be to accelerate our efforts toward carbon neutrality centered on proven, scalable silicon-based technology. And, at the same time, we must not spare investment in R&D for the future, promoting pilot projects and policy design to ensure that next-generation technologies like perovskites can be implemented in society as quickly as possible.To do the absolute best work we can today with the best tools we have available—this, I believe, is the most sincere and realistic approach to opening the door to the future.