EnergyOMNI x Energy Taiwan 2025｜"Turning Every Window into a Power Source" — Taiwan Perovskite Solar Corp. Pioneers Next-Generation Solar Technology Bridging Academia and Industry

Taiwan Perovskite Solar Corp. (TPSC) Will Hsin Director

As the global transition toward net zero accelerates, solar energy stands at the threshold of a generational shift. Founded in 2021, Taiwan Perovskite Solar Corp. (TPSC) enters its fifth year with an ambitious vision: to make solar power part of everyday life. Leveraging its strong academic roots, the company is driving perovskite solar technology beyond the laboratory — toward practical applications in architecture, agriculture, and consumer electronics.

This young Taiwanese startup has achieved remarkable progress in a short time — from pilot production and facility construction to field deployment — filling a critical gap in Taiwan's path toward energy transformation and industrial innovation.

From Academia to Industry: Seeing Opportunity Through a "Window"
"Our company is young, but we're working on a technology more than a decade in the making," says Will Hsin, Director of TPSC. The company was co-founded by Chairman L.J. Chen and Professor Tzu-Chien Wei of National Tsing Hua University's Department of Chemical Engineering, a long-time perovskite researcher whose academic lineage traces back to Professor Tsutomu Miyasaka of Toin University of Yokohama — the inventor of perovskite solar cells.

"In academia, results were outstanding, but in Taiwan's industry, few were bridging the gap to commercialization," recalls Hsin. "That's the ‘window' we saw." In its early years, the team built its first in-house pilot line — Mercury I — at Tsing Hua University, developing material, process, and equipment integration. In May 2024, it scaled up to Mercury II, a dedicated facility in Hsinchu's Jingguan Technology Park, featuring advanced environmental and metrology systems. "Moving from the lab to our own factory means we're no longer just doing research — we're engineering for stability, yield, efficiency, and reliability," says Hsin.

Why bet on perovskite? "Efficiency potential and design flexibility," Hsin explains. Conventional silicon solar modules average around 22% efficiency with limited room for improvement, while perovskite cells have advanced by 1–2% per year, reaching 26.9% efficiency in lab records. Perovskite's tunable optical spectrum and transparency also allow tandem integration with silicon, pushing theoretical limits beyond 34%.

Despite this promise, TPSC is not rushing into large-scale silicon-perovskite tandem manufacturing. Instead, it focuses on single-junction perovskite modules, developing full-stack capabilities — from materials to system integration — in building-integrated photovoltaics (BIPV) and agrivoltaics. "Tandems are the future," says Hsin, "but first, single-junction must prove its value across diverse applications."

Technology Meets Application: Bringing Solar Beyond Rooftops
「"Buildings contribute nearly 40% of global greenhouse gas emissions, and 75% of that comes from operational carbon," Hsin notes. "To meet 2030, 2040, and 2050 net-zero building goals, energy efficiency alone won't suffice — renewable generation must be built in."

Conventional silicon panels are opaque, heavy, and best suited for rooftops, limiting coverage on high-rises. Perovskite, by contrast, can be transparent, color-customizable, and integrated directly into façades as "power-generating glass."

In 2023, TPSC partnered with aluminum window brand AIW to form AIZ Green Energy, embedding perovskite modules into window systems — effectively turning windows into energy interfaces. "We don't sell panels; we deliver building-grade systems," Hsin emphasizes. "That includes double-glazed structures, encapsulation, wiring, energy storage, and even EMS integration."

With more than ten pilot sites across northern, central, and southern Taiwan — including government and major tech clients — TPSC's projects are designed around self-consumption plus renewable certificates, rather than traditional feed-in tariffs. "Electricity pricing has entered the post-FIT era," Hsin says. "Self-consumption with smart energy management simply makes more economic sense."

Yet integrating solar into buildings also raises aesthetic and regulatory challenges. "Architects care about proportions and light quality," Hsin says. "Perovskite allows us to retain natural light while converting unwanted spectra into energy."

Current Taiwanese regulations, however, lack a clear definition for vertical solar façades, creating a gray area for design and approval. "We've been working with public agencies and architectural firms to establish façade power generation standards," he adds. "Once that's in place, high-rise buildings can truly become solar producers."

In agriculture, perovskite's unique optical properties offer further advantages. Traditional agrivoltaic systems face trade-offs between shading and crop yield — regulations limit coverage to 40% and require maintaining 70% of crop output. "Perovskite lets us fine-tune the light spectrum," Hsin explains. "We can let crops receive the wavelengths they need — blue and red — while generating electricity from the rest."

TPSC has been testing perovskite greenhouses since 2022 in collaboration with a major listed electronics company. Starting with leafy greens, it has since expanded to cherry tomatoes and strawberries, achieving strong harvests. In southern Taiwan's Shalun Green Energy Park, TPSC has co-developed perovskite canopies for coffee and hops, while collaborating with National Chung Hsing University in central Taiwan. "Our goal isn't to make farmers compromise," Hsin says. "It's to make solar work for agriculture."

Recognizing cost and capacity challenges, TPSC is also working with government agencies to align subsidy programs for agricultural structures with emerging energy technologies, "so innovation can compete on fair ground."

Building an Ecosystem: From Technology to Industry
"Our strategy centers on four pillars — generation, storage, efficiency, and intelligence," says Hsin. Generation happens at the material and structural level; storage aligns power supply with demand; efficiency optimizes both optical and thermal performance; and intelligence integrates time-of-use pricing and demand response. "We're not just selling panels — we're delivering complete, site-ready energy systems."

Recycling is another key frontier. "Many early FIT solar projects are reaching end-of-life, yet most panels are still being scrapped," Hsin warns. TPSC is developing a closed-loop recycling process, separating glass and recovering materials through chemical reduction. "Our aim is to feed recovered glass back into production — to make next-generation solar glass from old ones."

To scale an entirely new material ecosystem, collaboration is essential. Two years ago, Chairman L.J. Chen founded the Perovskite Alliance, now counting around 50 members across materials, equipment, and application sectors. "We're connecting every node — from lab to engineering scale," Hsin says. "Cross-disciplinary work demands shared standards — in measurement, reliability testing, encapsulation, and integration with construction systems."

Policy support will be crucial. Japan has already recognized perovskite as a distinct solar technology category with tailored subsidies, while Taiwan still evaluates renewables largely through a rooftop-centric lens. TPSC actively participates in government dialogues to incorporate façade solar into net-zero building codes, providing performance data and pilot results for policymaking.

On commercialization, TPSC is building operational data at home before expanding abroad. "We're engaging partners across Japan, the U.S., Singapore, Indonesia, Thailand, the Philippines, and Saudi Arabia," Hsin reveals. "When we go global, we'll bring not just products — but proven engineering and operational models."

When Windows and Fields Generate Power, Energy Truly Comes Home
"Perovskite isn't meant to replace silicon," Hsin concludes. "It's meant to bring solar where silicon can't go." When façades generate power, when windows breathe light, when greenhouses tailor sunlight to crops — solar energy transforms from a rooftop installation into a living interface between cities and nature.

"What we're building isn't just a panel," Hsin says thoughtfully. "It's a complete system — a new industrial chain from materials to application. Once that chain takes root in Taiwan, the next step is to share it with the world." When that window opens, sunlight — and a new kind of energy future — flows in.