The Nexus pilot project in California successfully demonstrated that installing solar panels over irrigation canals can reduce water evaporation and algae growth by 85%. This public-private partnership aimed to generate empirical data on the feasibility of deploying PV systems on active irrigation canals, showing potential operational efficiencies in canal management. The project tested various design configurations and highlighted the scalability potential of covering California's extensive canal network, which could save billions of gallons of water annually and improve water quality. This innovative solution has the potential to be a significant climate solution, offering both water conservation and renewable energy benefits.
Author: Pv Magazine
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Australian researchers develop vapour-based manufacturing process for lead-free perovskite solar
University of Queensland researchers have developed a scalable, lead-free perovskite solar cell manufacturing process that achieves record indoor-light efficiency without toxic materials. The new method eliminates the need for hazardous solvents and lead, making it better suited for scalable manufacturing. The panels made using this process are thin, scalable, and can be integrated into a range of products, offering an alternative to batteries for low-power electronics. The technology has the potential to replace silicon with higher efficiencies and commercial potential, with applications in consumer electronics and environmental sensors. Further testing is needed to ensure protection from oxygen and moisture.
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Inorganic perovskite solar cell based on tetraphenyl-porphine zinc interlayer achieves 82% fill factor
An international research team has proposed a novel perovskite solar cell architecture incorporating a thin tetraphenyl-porphine zinc interfacial layer to enhance surface potential, passivate defect states, and improve charge transport, leading to improved device efficiency and operational stability with power conversion efficiencies exceeding 13%. The surface potential of cesium lead iodide bromide (CsPbIBr2) perovskite solar cells is enhanced by depositing a thin layer of tetraphenyl-porphine zinc (TPP-Zn) onto the active layer, enabling simultaneous suppression of surface defects and enhancement of charge carrier dynamics. Researchers have developed an optimized CsPbIBr2 perovskite solar cell with a peak efficiency of 13.47% and impressive performance metrics, demonstrating a promising approach for stable and high-performance inorganic perovskite solar cells. This study showcases a successful collaboration among scientists from various universities, as detailed in the article "Surface engineered wide-bandgap all-inorganic perovskite solar cells achieve a fill factor exceeding 82%."
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Renewables growth cut Spain’s electricity bills by 24.2% over the past two years
A new report from Positive Money reveals that Spain and Portugal have significantly reduced their exposure to gas price volatility by 53% in the past three years, thanks to the expansion of renewable energy. The study underscores how renewable energy is reshaping electricity prices in Europe, decreasing reliance on gas and mitigating vulnerability to volatile energy markets. The report also highlights the European Union's continued dependence on imported fossil fuels, leaving it susceptible to price shocks and geopolitical instability. Additionally, the report emphasizes the economic incentives for energy storage investments driven by low midday prices and higher evening peak prices, signaling the growing importance of energy storage technologies in the transition to a more sustainable and reliable energy system amidst shifting market dynamics.
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Cooling PV modules with hydrogel-coated paper
A Vietnamese research team has developed a low-cost passive cooling system for PV modules using hydrogel-coated paper that combines water flow and interfacial evaporation to reduce operating temperatures. Outdoor tests showed temperature reductions of up to 14 C and efficiency gains of up to 16.8%, with stable operation achieved using both freshwater and natural seawater. The system was tested under real outdoor conditions and showed strong performance, with the hydrogel-coated paper maintaining effective cooling even with natural seawater. The novel passive cooling technique enables convective heat transfer through flowing water and dissipation of latent heat via interfacial evaporation, leading to significant efficiency gains for PV panels. The study involved researchers from various universities in Vietnam and aims to scale up the system for real-world use, focusing on optimizing materials for different climates, enhancing corrosion protection, and integrating energy generation with water treatment.
https://www.pv-magazine.com/2026/04/28/cooling-pv-modules-with-hydrogel-coated-paper/
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How to electrify greenhouses with semi-transparent PV, heat pumps
Researchers in Canada found that 69%-transparent crystalline silicon semitransparent PV modules can improve tomato greenhouse yields by up to 38% while maintaining healthy plant growth through beneficial partial shading. Combining rooftop agrivoltaics with heat pumps can fully eliminate fossil fuel heating. Various bifacial STPV technologies were tested in greenhouse conditions for tomato production, with differences in light intensity and spectrum affecting plant growth. The study, published in Energy and Buildings, evaluated agrivoltaic greenhouse systems through five main stages and used software tools to simulate and analyze different greenhouse scenarios. Experimental investigations showed that the selected 69% transparent PV system with a heat pump enabled full electrification of an agrivoltaic greenhouse, covering approximately 13% of the total annual electricity demand. This combination of agrivoltaic fields and partially-powered agrivoltaic greenhouses was seen as a synergistic strategy for sustainable and economically viable production, with the potential to reduce greenhouse carbon emissions and improve crop yields.
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Trina Solar claims world’s highest efficiency for silicon solar cells with 28.0%-efficient device
Trina Solar has achieved a power conversion efficiency of 28.0% for its new TOPCon-compatible hybrid back-contact solar cell, certified by Germany's ISFH. The THBC technology combines TOPCon passivated-contact capability, HJT-style passivation advantages, and a back-contact electrode structure, setting a new benchmark for large-area crystalline silicon cells. This innovation is compatible with thin wafers and current TOPCon production lines, potentially reducing commercialization costs. Trina Solar plans to release new THBC-based products and has mass-production plans in place, signaling a significant advancement in solar technology for climate solutions.
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Meta gains early access to 1 GW of space-based solar power
Meta has signed an agreement with Overview Energy to receive space-based solar power for its data centers, aiming to demonstrate the technology in 2028 and begin commercial power delivery in 2030. This system collects solar energy in space and beams it to existing solar facilities on the ground, offering a 30% power boost and allowing developers to bypass grid constraints and interconnection bottlenecks. The partnership reflects a broader industry shift towards non-grid solutions as companies seek to insulate themselves from grid volatility and meet the power requirements of generative AI. This innovative orbital strategy could revolutionize the way companies access renewable energy and contribute to a more sustainable future.
https://www.pv-magazine.com/2026/04/27/meta-gains-early-access-to-1-gw-of-space-based-solar-power/
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UK solar developer secures $1.1 billion financing package
Enviromena, an independent power producer, has secured a £825 million ($1.1 billion) senior portfolio financing package to support the buildout of a 1 GW solar pipeline in the UK. The financing, underwritten by institutional investors, includes an initial £525 million with an additional £300 million available for expansion. With a development pipeline exceeding 3 GW and over 120 solar plants built to date, Enviromena aims to accelerate the transition to renewable energy and support the UK's energy transition. This landmark financing package is a significant step towards achieving climate solutions and reducing carbon emissions in the UK.
https://www.pv-magazine.com/2026/04/24/uk-solar-developer-secures-1-1-billion-financing-package/
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Japanese scientists build all-perovskite tandem solar cell with 30.2% efficiency
Researchers at the University of Tokyo have developed an all-perovskite tandem solar cell using FAPbI3 nanoparticles, achieving 30.2% efficiency by combining a wide-bandgap top cell and a narrow-bandgap bottom cell. FAPbI3 is known for its high efficiency in solar cells but can transform into a non-functional phase, limiting performance. The researchers used a two-step method to fabricate the perovskite layers, stabilizing the material and improving durability. The four-terminal spectral splitting architecture of the device minimizes losses and efficiently utilizes the solar spectrum across both cells. The study suggests that carefully chosen spectral splitting wavelengths can lead to high efficiencies in both four-terminal and two-terminal perovskite solar cell architectures, with practical deployment options including outdoor photovoltaic systems and integration with concentrator photovoltaics.